diff --git a/Library/Homebrew/cask/lib/hbc/artifact.rb b/Library/Homebrew/cask/lib/hbc/artifact.rb
index 074d15017a..cb15ec0513 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact.rb
@@ -33,7 +33,7 @@ module Hbc
     # We want to extract nested containers before we
     # handle any other artifacts.
     #
-    TYPES = [
+    CLASSES = [
       PreflightBlock,
       Uninstall,
       NestedContainer,
@@ -60,12 +60,9 @@ module Hbc
       Zap,
     ].freeze
 
-    def self.for_cask(cask, options = {})
+    def self.for_cask(cask)
       odebug "Determining which artifacts are present in Cask #{cask}"
-
-      TYPES
-        .select { |klass| klass.me?(cask) }
-        .map { |klass| klass.new(cask, options) }
+      CLASSES.flat_map { |klass| klass.for_cask(cask) }
     end
   end
 end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/base.rb b/Library/Homebrew/cask/lib/hbc/artifact/abstract_artifact.rb
similarity index 66%
rename from Library/Homebrew/cask/lib/hbc/artifact/base.rb
rename to Library/Homebrew/cask/lib/hbc/artifact/abstract_artifact.rb
index ae15552a4e..1b18cc6e7d 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/base.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/abstract_artifact.rb
@@ -1,34 +1,28 @@
 module Hbc
   module Artifact
-    class Base
+    class AbstractArtifact
       extend Predicable
 
-      def self.artifact_name
-        @artifact_name ||= name.sub(/^.*:/, "").gsub(/(.)([A-Z])/, '\1_\2').downcase
+      def self.english_name
+        @english_name ||= name.sub(/^.*:/, "").gsub(/(.)([A-Z])/, '\1 \2')
       end
 
-      def self.artifact_english_name
-        @artifact_english_name ||= name.sub(/^.*:/, "").gsub(/(.)([A-Z])/, '\1 \2')
+      def self.english_article
+        @english_article ||= (english_name =~ /^[aeiou]/i) ? "an" : "a"
       end
 
-      def self.artifact_english_article
-        @artifact_english_article ||= (artifact_english_name =~ /^[aeiou]/i) ? "an" : "a"
+      def self.dsl_key
+        @dsl_key ||= name.sub(/^.*:/, "").gsub(/(.)([A-Z])/, '\1_\2').downcase.to_sym
       end
 
-      def self.artifact_dsl_key
-        @artifact_dsl_key ||= artifact_name.to_sym
+      def self.dirmethod
+        @dirmethod ||= "#{dsl_key}dir".to_sym
       end
 
-      def self.artifact_dirmethod
-        @artifact_dirmethod ||= "#{artifact_name}dir".to_sym
+      def self.for_cask(cask)
+        cask.artifacts[dsl_key].to_a
       end
 
-      def self.me?(cask)
-        cask.artifacts[artifact_dsl_key].any?
-      end
-
-      attr_reader :force
-
       # TODO: this sort of logic would make more sense in dsl.rb, or a
       #       constructor called from dsl.rb, so long as that isn't slow.
       def self.read_script_arguments(arguments, stanza, default_arguments = {}, override_arguments = {}, key = nil)
@@ -63,17 +57,14 @@ module Hbc
         [executable, arguments]
       end
 
-      def summary
-        {}
+      attr_reader :cask
+
+      def initialize(cask)
+        @cask = cask
       end
 
-      attr_predicate :force?, :verbose?
-
-      def initialize(cask, command: SystemCommand, force: false, verbose: false)
-        @cask = cask
-        @command = command
-        @force = force
-        @verbose = verbose
+      def to_s
+        "#{summarize} (#{self.class.english_name})"
       end
     end
   end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/abstract_flight_block.rb b/Library/Homebrew/cask/lib/hbc/artifact/abstract_flight_block.rb
index be3050acb7..6670d42499 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/abstract_flight_block.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/abstract_flight_block.rb
@@ -1,39 +1,47 @@
-require "hbc/artifact/base"
+require "hbc/artifact/abstract_artifact"
 
 module Hbc
   module Artifact
-    class AbstractFlightBlock < Base
-      def self.artifact_dsl_key
+    class AbstractFlightBlock < AbstractArtifact
+      def self.dsl_key
         super.to_s.sub(/_block$/, "").to_sym
       end
 
-      def self.uninstall_artifact_dsl_key
-        artifact_dsl_key.to_s.prepend("uninstall_").to_sym
+      def self.uninstall_dsl_key
+        dsl_key.to_s.prepend("uninstall_").to_sym
       end
 
-      def self.class_for_dsl_key(dsl_key)
-        Object.const_get("Hbc::DSL::#{dsl_key.to_s.split("_").collect(&:capitalize).join}")
+      def self.for_cask(cask)
+        [dsl_key, uninstall_dsl_key].flat_map do |key|
+          [*cask.artifacts[key]].map { |block| new(cask, key => block) }
+        end
       end
 
-      def self.me?(cask)
-        cask.artifacts[artifact_dsl_key].any? ||
-          cask.artifacts[uninstall_artifact_dsl_key].any?
+      attr_reader :directives
+
+      def initialize(cask, **directives)
+        super(cask)
+        @directives = directives
       end
 
-      def install_phase
-        abstract_phase(self.class.artifact_dsl_key)
+      def install_phase(**)
+        abstract_phase(self.class.dsl_key)
       end
 
-      def uninstall_phase
-        abstract_phase(self.class.uninstall_artifact_dsl_key)
+      def uninstall_phase(**)
+        abstract_phase(self.class.uninstall_dsl_key)
       end
 
       private
 
+      def class_for_dsl_key(dsl_key)
+        namespace = self.class.name.to_s.sub(/::.*::.*$/, "")
+        self.class.const_get("#{namespace}::DSL::#{dsl_key.to_s.split("_").collect(&:capitalize).join}")
+      end
+
       def abstract_phase(dsl_key)
-        @cask.artifacts[dsl_key].each do |block|
-          self.class.class_for_dsl_key(dsl_key).new(@cask).instance_eval(&block)
-        end
+        return if (block = directives[dsl_key]).nil?
+        class_for_dsl_key(dsl_key).new(cask).instance_eval(&block)
       end
     end
   end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/uninstall_base.rb b/Library/Homebrew/cask/lib/hbc/artifact/abstract_uninstall.rb
similarity index 63%
rename from Library/Homebrew/cask/lib/hbc/artifact/uninstall_base.rb
rename to Library/Homebrew/cask/lib/hbc/artifact/abstract_uninstall.rb
index d926441502..9499d5c03f 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/uninstall_base.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/abstract_uninstall.rb
@@ -1,11 +1,11 @@
 require "pathname"
 require "timeout"
 
-require "hbc/artifact/base"
+require "hbc/artifact/abstract_artifact"
 
 module Hbc
   module Artifact
-    class UninstallBase < Base
+    class AbstractUninstall < AbstractArtifact
       ORDERED_DIRECTIVES = [
         :early_script,
         :launchctl,
@@ -20,26 +20,33 @@ module Hbc
         :rmdir,
       ].freeze
 
-      def dispatch_uninstall_directives
-        directives_set = @cask.artifacts[stanza]
-        ohai "Running #{stanza} process for #{@cask}; your password may be necessary"
+      def self.from_args(cask, **directives)
+        new(cask, directives)
+      end
 
-        directives_set.each do |directives|
-          warn_for_unknown_directives(directives)
-        end
+      attr_reader :directives
 
-        ORDERED_DIRECTIVES.each do |directive_sym|
-          directives_set.select { |h| h.key?(directive_sym) }.each do |directives|
-            args = directives[directive_sym]
-            send("uninstall_#{directive_sym}", *(args.is_a?(Hash) ? [args] : args))
-          end
-        end
+      def initialize(cask, directives)
+        super(cask)
+        @directives = directives
       end
 
       private
 
+      def dispatch_uninstall_directives(**options)
+        ohai "Running #{stanza} process for #{@cask}; your password may be necessary"
+
+        warn_for_unknown_directives(directives)
+
+        ORDERED_DIRECTIVES.each do |directive_sym|
+          next unless directives.key?(directive_sym)
+          args = directives[directive_sym]
+          send("uninstall_#{directive_sym}", *(args.is_a?(Hash) ? [args] : args), **options)
+        end
+      end
+
       def stanza
-        self.class.artifact_dsl_key
+        self.class.dsl_key
       end
 
       def warn_for_unknown_directives(directives)
@@ -51,18 +58,18 @@ module Hbc
       # Preserve prior functionality of script which runs first. Should rarely be needed.
       # :early_script should not delete files, better defer that to :script.
       # If Cask writers never need :early_script it may be removed in the future.
-      def uninstall_early_script(directives)
-        uninstall_script(directives, directive_name: :early_script)
+      def uninstall_early_script(directives, **options)
+        uninstall_script(directives, directive_name: :early_script, **options)
       end
 
       # :launchctl must come before :quit/:signal for cases where app would instantly re-launch
-      def uninstall_launchctl(*services)
+      def uninstall_launchctl(*services, command: nil, **_)
         services.each do |service|
           ohai "Removing launchctl service #{service}"
           [false, true].each do |with_sudo|
-            plist_status = @command.run("/bin/launchctl", args: ["list", service], sudo: with_sudo, print_stderr: false).stdout
+            plist_status = command.run("/bin/launchctl", args: ["list", service], sudo: with_sudo, print_stderr: false).stdout
             if plist_status =~ /^\{/
-              @command.run!("/bin/launchctl", args: ["remove", service], sudo: with_sudo)
+              command.run!("/bin/launchctl", args: ["remove", service], sudo: with_sudo)
               sleep 1
             end
             paths = ["/Library/LaunchAgents/#{service}.plist",
@@ -70,38 +77,38 @@ module Hbc
             paths.each { |elt| elt.prepend(ENV["HOME"]) } unless with_sudo
             paths = paths.map { |elt| Pathname(elt) }.select(&:exist?)
             paths.each do |path|
-              @command.run!("/bin/rm", args: ["-f", "--", path], sudo: with_sudo)
+              command.run!("/bin/rm", args: ["-f", "--", path], sudo: with_sudo)
             end
             # undocumented and untested: pass a path to uninstall :launchctl
             next unless Pathname(service).exist?
-            @command.run!("/bin/launchctl", args: ["unload", "-w", "--", service], sudo: with_sudo)
-            @command.run!("/bin/rm",        args: ["-f", "--", service], sudo: with_sudo)
+            command.run!("/bin/launchctl", args: ["unload", "-w", "--", service], sudo: with_sudo)
+            command.run!("/bin/rm",        args: ["-f", "--", service], sudo: with_sudo)
             sleep 1
           end
         end
       end
 
-      def running_processes(bundle_id)
-        @command.run!("/bin/launchctl", args: ["list"]).stdout.lines
-                .map { |line| line.chomp.split("\t") }
-                .map { |pid, state, id| [pid.to_i, state.to_i, id] }
-                .select do |fields|
-                  next if fields[0].zero?
-                  fields[2] =~ /^#{Regexp.escape(bundle_id)}($|\.\d+)/
-                end
+      def running_processes(bundle_id, command: nil)
+        command.run!("/bin/launchctl", args: ["list"]).stdout.lines
+               .map { |line| line.chomp.split("\t") }
+               .map { |pid, state, id| [pid.to_i, state.to_i, id] }
+               .select do |fields|
+                 next if fields[0].zero?
+                 fields[2] =~ /^#{Regexp.escape(bundle_id)}($|\.\d+)/
+               end
       end
 
       # :quit/:signal must come before :kext so the kext will not be in use by a running process
-      def uninstall_quit(*bundle_ids)
+      def uninstall_quit(*bundle_ids, command: nil, **_)
         bundle_ids.each do |bundle_id|
           ohai "Quitting application ID #{bundle_id}"
-          next if running_processes(bundle_id).empty?
-          @command.run!("/usr/bin/osascript", args: ["-e", %Q(tell application id "#{bundle_id}" to quit)], sudo: true)
+          next if running_processes(bundle_id, command: command).empty?
+          command.run!("/usr/bin/osascript", args: ["-e", %Q(tell application id "#{bundle_id}" to quit)], sudo: true)
 
           begin
             Timeout.timeout(3) do
               Kernel.loop do
-                break if running_processes(bundle_id).empty?
+                break if running_processes(bundle_id, command: command).empty?
               end
             end
           rescue Timeout::Error
@@ -111,15 +118,15 @@ module Hbc
       end
 
       # :signal should come after :quit so it can be used as a backup when :quit fails
-      def uninstall_signal(*signals)
+      def uninstall_signal(*signals, **options)
         signals.flatten.each_slice(2) do |pair|
           unless pair.size == 2
-            raise CaskInvalidError.new(@cask, "Each #{stanza} :signal must consist of 2 elements.")
+            raise CaskInvalidError.new(cask, "Each #{stanza} :signal must consist of 2 elements.")
           end
 
           signal, bundle_id = pair
           ohai "Signalling '#{signal}' to application ID '#{bundle_id}'"
-          pids = running_processes(bundle_id).map(&:first)
+          pids = running_processes(bundle_id, **options).map(&:first)
           next unless pids.any?
           # Note that unlike :quit, signals are sent from the current user (not
           # upgraded to the superuser). This is a todo item for the future, but
@@ -133,10 +140,10 @@ module Hbc
         end
       end
 
-      def uninstall_login_item(*login_items)
+      def uninstall_login_item(*login_items, command: nil, **_)
         login_items.each do |name|
           ohai "Removing login item #{name}"
-          @command.run!("/usr/bin/osascript",
+          command.run!("/usr/bin/osascript",
                         args: ["-e", %Q(tell application "System Events" to delete every login item whose name is "#{name}")],
                         sudo: false)
           sleep 1
@@ -144,23 +151,24 @@ module Hbc
       end
 
       # :kext should be unloaded before attempting to delete the relevant file
-      def uninstall_kext(*kexts)
+      def uninstall_kext(*kexts, command: nil, **_)
         kexts.each do |kext|
           ohai "Unloading kernel extension #{kext}"
-          is_loaded = @command.run!("/usr/sbin/kextstat", args: ["-l", "-b", kext], sudo: true).stdout
+          is_loaded = command.run!("/usr/sbin/kextstat", args: ["-l", "-b", kext], sudo: true).stdout
           if is_loaded.length > 1
-            @command.run!("/sbin/kextunload", args: ["-b", kext], sudo: true)
+            command.run!("/sbin/kextunload", args: ["-b", kext], sudo: true)
             sleep 1
           end
-          @command.run!("/usr/sbin/kextfind", args: ["-b", kext], sudo: true).stdout.chomp.lines.each do |kext_path|
+          command.run!("/usr/sbin/kextfind", args: ["-b", kext], sudo: true).stdout.chomp.lines.each do |kext_path|
             ohai "Removing kernel extension #{kext_path}"
-            @command.run!("/bin/rm", args: ["-rf", kext_path], sudo: true)
+            command.run!("/bin/rm", args: ["-rf", kext_path], sudo: true)
           end
         end
       end
 
       # :script must come before :pkgutil, :delete, or :trash so that the script file is not already deleted
-      def uninstall_script(directives, directive_name: :script)
+      def uninstall_script(directives, directive_name: :script, force: false, command: nil, **_)
+        # TODO: Create a common `Script` class to run this and Artifact::Installer.
         executable, script_arguments = self.class.read_script_arguments(directives,
                                                                         "uninstall",
                                                                         { must_succeed: true, sudo: false },
@@ -168,25 +176,25 @@ module Hbc
                                                                         directive_name)
 
         ohai "Running uninstall script #{executable}"
-        raise CaskInvalidError.new(@cask, "#{stanza} :#{directive_name} without :executable.") if executable.nil?
-        executable_path = @cask.staged_path.join(executable)
+        raise CaskInvalidError.new(cask, "#{stanza} :#{directive_name} without :executable.") if executable.nil?
+        executable_path = cask.staged_path.join(executable)
 
         unless executable_path.exist?
           message = "uninstall script #{executable} does not exist"
-          raise CaskError, "#{message}." unless force?
+          raise CaskError, "#{message}." unless force
           opoo "#{message}, skipping."
           return
         end
 
-        @command.run("/bin/chmod", args: ["--", "+x", executable_path])
-        @command.run(executable_path, script_arguments)
+        command.run("/bin/chmod", args: ["--", "+x", executable_path])
+        command.run(executable_path, script_arguments)
         sleep 1
       end
 
-      def uninstall_pkgutil(*pkgs)
+      def uninstall_pkgutil(*pkgs, command: nil, **_)
         ohai "Uninstalling packages:"
         pkgs.each do |regex|
-          Hbc::Pkg.all_matching(regex, @command).each do |pkg|
+          Hbc::Pkg.all_matching(regex, command).each do |pkg|
             puts pkg.package_id
             pkg.uninstall
           end
@@ -215,28 +223,28 @@ module Hbc
         end
       end
 
-      def uninstall_delete(*paths)
+      def uninstall_delete(*paths, command: nil, **_)
         return if paths.empty?
 
         ohai "Removing files:"
         each_resolved_path(:delete, paths) do |path, resolved_paths|
           puts path
-          @command.run!("/usr/bin/xargs", args: ["-0", "--", "/bin/rm", "-r", "-f", "--"], input: resolved_paths.join("\0"), sudo: true)
+          command.run!("/usr/bin/xargs", args: ["-0", "--", "/bin/rm", "-r", "-f", "--"], input: resolved_paths.join("\0"), sudo: true)
         end
       end
 
-      def uninstall_trash(*paths)
+      def uninstall_trash(*paths, **options)
         return if paths.empty?
 
         resolved_paths = each_resolved_path(:trash, paths).to_a
 
         ohai "Trashing files:"
         puts resolved_paths.map(&:first)
-        trash_paths(*resolved_paths.flat_map(&:last))
+        trash_paths(*resolved_paths.flat_map(&:last), **options)
       end
 
-      def trash_paths(*paths)
-        @command.run!("/usr/bin/osascript", args: ["-e", <<-'EOS'.undent, *paths])
+      def trash_paths(*paths, command: nil, **_)
+        command.run!("/usr/bin/osascript", args: ["-e", <<-'EOS'.undent, *paths])
           on run argv
             repeat with i from 1 to (count argv)
               set item i of argv to (item i of argv as POSIX file)
@@ -260,7 +268,7 @@ module Hbc
         EOS
       end
 
-      def uninstall_rmdir(*directories)
+      def uninstall_rmdir(*directories, command: nil, **_)
         return if directories.empty?
 
         ohai "Removing directories if empty:"
@@ -268,10 +276,10 @@ module Hbc
           puts path
           resolved_paths.select(&:directory?).each do |resolved_path|
             if (ds_store = resolved_path.join(".DS_Store")).exist?
-              @command.run!("/bin/rm", args: ["-f", "--", ds_store], sudo: true, print_stderr: false)
+              command.run!("/bin/rm", args: ["-f", "--", ds_store], sudo: true, print_stderr: false)
             end
 
-            @command.run("/bin/rmdir", args: ["--", resolved_path], sudo: true, print_stderr: false)
+            command.run("/bin/rmdir", args: ["--", resolved_path], sudo: true, print_stderr: false)
           end
         end
       end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/artifact.rb b/Library/Homebrew/cask/lib/hbc/artifact/artifact.rb
index b42db877d0..0f37afaded 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/artifact.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/artifact.rb
@@ -5,21 +5,32 @@ require "hbc/utils/hash_validator"
 module Hbc
   module Artifact
     class Artifact < Moved
-      def self.artifact_english_name
+      def self.english_name
         "Generic Artifact"
       end
 
-      def self.artifact_dirmethod
-        :appdir
+      def self.from_args(cask, *args)
+        source_string, target_hash = args
+
+        if source_string.nil?
+          raise CaskInvalidError.new(cask.token, "no source given for #{english_name}")
+        end
+
+        unless target_hash.is_a?(Hash)
+          raise CaskInvalidError.new(cask.token, "target required for #{english_name} '#{source_string}'")
+        end
+
+        target_hash.extend(HashValidator).assert_valid_keys(:target)
+
+        new(cask, source_string, **target_hash)
       end
 
-      def load_specification(artifact_spec)
-        source_string, target_hash = artifact_spec
-        raise CaskInvalidError.new(@cask.token, "no source given for artifact") if source_string.nil?
-        @source = @cask.staged_path.join(source_string)
-        raise CaskInvalidError.new(@cask.token, "target required for generic artifact #{source_string}") unless target_hash.is_a?(Hash)
-        target_hash.extend(HashValidator).assert_valid_keys(:target)
-        @target = Pathname.new(target_hash[:target])
+      def self.resolve_target(target)
+        Pathname(target)
+      end
+
+      def initialize(cask, source, target: nil)
+        super(cask, source, target: target)
       end
     end
   end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/binary.rb b/Library/Homebrew/cask/lib/hbc/artifact/binary.rb
index 7178c2af69..68f4b074da 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/binary.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/binary.rb
@@ -3,13 +3,13 @@ require "hbc/artifact/symlinked"
 module Hbc
   module Artifact
     class Binary < Symlinked
-      def link
-        super
+      def link(command: nil, **options)
+        super(command: command, **options)
         return if source.executable?
         if source.writable?
           FileUtils.chmod "+x", source
         else
-          @command.run!("/bin/chmod", args: ["+x", source], sudo: true)
+          command.run!("/bin/chmod", args: ["+x", source], sudo: true)
         end
       end
     end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/installer.rb b/Library/Homebrew/cask/lib/hbc/artifact/installer.rb
index be857696ec..64ce2d4bc5 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/installer.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/installer.rb
@@ -1,31 +1,78 @@
-require "hbc/artifact/base"
+require "hbc/artifact/abstract_artifact"
 
 module Hbc
   module Artifact
-    class Installer < Base
-      def install_phase
-        @cask.artifacts[self.class.artifact_dsl_key].each do |artifact|
-          if artifact.manual
-            puts <<-EOS.undent
-              To complete the installation of Cask #{@cask}, you must also
-              run the installer at
+    class Installer < AbstractArtifact
+      VALID_KEYS = Set.new [
+        :manual,
+        :script,
+      ]
 
-                '#{@cask.staged_path.join(artifact.manual)}'
+      module ManualInstaller
+        def install_phase(**)
+          puts <<-EOS.undent
+            To complete the installation of Cask #{cask}, you must also
+            run the installer at
 
-            EOS
-          else
-            executable, script_arguments = self.class.read_script_arguments(artifact.script,
-                                                                            self.class.artifact_dsl_key.to_s,
-                                                                            { must_succeed: true, sudo: false },
-                                                                            print_stdout: true)
-            ohai "Running #{self.class.artifact_dsl_key} script #{executable}"
-            raise CaskInvalidError.new(@cask, "#{self.class.artifact_dsl_key} missing executable") if executable.nil?
-            executable_path = @cask.staged_path.join(executable)
-            @command.run("/bin/chmod", args: ["--", "+x", executable_path]) if File.exist?(executable_path)
-            @command.run(executable_path, script_arguments)
-          end
+              '#{path}'
+          EOS
         end
       end
+
+      module ScriptInstaller
+        def install_phase(command: nil, **_)
+          ohai "Running #{self.class.dsl_key} script '#{path.relative_path_from(cask.staged_path)}'"
+          FileUtils.chmod "+x", path unless path.executable?
+          command.run(path, **args)
+        end
+      end
+
+      def self.from_args(cask, **args)
+        raise CaskInvalidError.new(cask, "'installer' stanza requires an argument.") if args.empty?
+
+        if args.key?(:script) && !args[:script].respond_to?(:key?)
+          if args.key?(:executable)
+            raise CaskInvalidError.new(cask, "'installer' stanza gave arguments for both :script and :executable.")
+          end
+
+          args[:executable] = args[:script]
+          args.delete(:script)
+          args = { script: args }
+        end
+
+        unless args.keys.count == 1
+          raise CaskInvalidError.new(cask, "invalid 'installer' stanza: Only one of #{VALID_KEYS.inspect} is permitted.")
+        end
+
+        args.extend(HashValidator).assert_valid_keys(*VALID_KEYS)
+        new(cask, **args)
+      end
+
+      attr_reader :path, :args
+
+      def initialize(cask, **args)
+        super(cask)
+
+        if args.key?(:manual)
+          @path = cask.staged_path.join(args[:manual])
+          @args = []
+          extend(ManualInstaller)
+          return
+        end
+
+        path, @args = self.class.read_script_arguments(
+          args[:script], self.class.dsl_key.to_s, { must_succeed: true, sudo: false }, print_stdout: true
+        )
+        raise CaskInvalidError.new(cask, "#{self.class.dsl_key} missing executable") if path.nil?
+
+        path = Pathname(path)
+        @path = path.absolute? ? path : cask.staged_path.join(path)
+        extend(ScriptInstaller)
+      end
+
+      def summarize
+        path.relative_path_from(cask.staged_path).to_s
+      end
     end
   end
 end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/moved.rb b/Library/Homebrew/cask/lib/hbc/artifact/moved.rb
index 3fe969c0c2..ba1c8e9072 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/moved.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/moved.rb
@@ -4,63 +4,61 @@ module Hbc
   module Artifact
     class Moved < Relocated
       def self.english_description
-        "#{artifact_english_name}s"
+        "#{english_name}s"
       end
 
-      def install_phase
-        each_artifact(&method(:move))
+      def install_phase(**options)
+        move(**options)
       end
 
-      def uninstall_phase
-        each_artifact(&method(:delete))
+      def uninstall_phase(**options)
+        delete(**options)
+      end
+
+      def summarize_installed
+        if target.exist?
+          "#{printable_target} (#{target.abv})"
+        else
+          Formatter.error(printable_target, label: "Missing #{self.class.english_name}")
+        end
       end
 
       private
 
-      def move
+      def move(force: false, command: nil, **options)
         if Utils.path_occupied?(target)
-          message = "It seems there is already #{self.class.artifact_english_article} #{self.class.artifact_english_name} at '#{target}'"
-          raise CaskError, "#{message}." unless force?
+          message = "It seems there is already #{self.class.english_article} #{self.class.english_name} at '#{target}'"
+          raise CaskError, "#{message}." unless force
           opoo "#{message}; overwriting."
-          delete
+          delete(force: force, command: command, **options)
         end
 
         unless source.exist?
-          raise CaskError, "It seems the #{self.class.artifact_english_name} source '#{source}' is not there."
+          raise CaskError, "It seems the #{self.class.english_name} source '#{source}' is not there."
         end
 
-        ohai "Moving #{self.class.artifact_english_name} '#{source.basename}' to '#{target}'."
+        ohai "Moving #{self.class.english_name} '#{source.basename}' to '#{target}'."
         target.dirname.mkpath
 
         if target.parent.writable?
           FileUtils.move(source, target)
         else
-          SystemCommand.run("/bin/mv", args: [source, target], sudo: true)
+          command.run("/bin/mv", args: [source, target], sudo: true)
         end
 
-        add_altname_metadata target, source.basename.to_s
+        add_altname_metadata(target, source.basename, command: command)
       end
 
-      def delete
-        ohai "Removing #{self.class.artifact_english_name} '#{target}'."
-        raise CaskError, "Cannot remove undeletable #{self.class.artifact_english_name}." if MacOS.undeletable?(target)
+      def delete(force: false, command: nil, **_)
+        ohai "Removing #{self.class.english_name} '#{target}'."
+        raise CaskError, "Cannot remove undeletable #{self.class.english_name}." if MacOS.undeletable?(target)
 
         return unless Utils.path_occupied?(target)
 
         if target.parent.writable? && !force
           target.rmtree
         else
-          Utils.gain_permissions_remove(target, command: @command)
-        end
-      end
-
-      def summarize_artifact(artifact_spec)
-        load_specification artifact_spec
-
-        if target.exist?
-          "#{printable_target} (#{target.abv})"
-        else
-          Formatter.error(printable_target, label: "Missing #{self.class.artifact_english_name}")
+          Utils.gain_permissions_remove(target, command: command)
         end
       end
     end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/nested_container.rb b/Library/Homebrew/cask/lib/hbc/artifact/nested_container.rb
index 84253ea308..81adf90290 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/nested_container.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/nested_container.rb
@@ -1,23 +1,31 @@
-require "hbc/artifact/base"
+require "hbc/artifact/abstract_artifact"
 
 module Hbc
   module Artifact
-    class NestedContainer < Base
-      def install_phase
-        @cask.artifacts[:nested_container].each { |container| extract(container) }
+    class NestedContainer < AbstractArtifact
+      attr_reader :path
+
+      def initialize(cask, path)
+        super(cask)
+        @path = cask.staged_path.join(path)
       end
 
-      def extract(container_relative_path)
-        source = @cask.staged_path.join(container_relative_path)
-        container = Container.for_path(source, @command)
+      def install_phase(**options)
+        extract(**options)
+      end
+
+      private
+
+      def extract(command: nil, verbose: nil, **_)
+        container = Container.for_path(path, command)
 
         unless container
           raise CaskError, "Aw dang, could not identify nested container at '#{source}'"
         end
 
-        ohai "Extracting nested container #{source.basename}"
-        container.new(@cask, source, @command, verbose: verbose?).extract
-        FileUtils.remove_entry_secure(source)
+        ohai "Extracting nested container #{path.relative_path_from(cask.staged_path)}"
+        container.new(cask, path, command, verbose: verbose).extract
+        FileUtils.remove_entry_secure(path)
       end
     end
   end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/pkg.rb b/Library/Homebrew/cask/lib/hbc/artifact/pkg.rb
index be0a6be717..0967fd99d8 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/pkg.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/pkg.rb
@@ -1,4 +1,4 @@
-require "hbc/artifact/base"
+require "hbc/artifact/abstract_artifact"
 
 require "hbc/utils/hash_validator"
 
@@ -6,62 +6,57 @@ require "vendor/plist/plist"
 
 module Hbc
   module Artifact
-    class Pkg < Base
+    class Pkg < AbstractArtifact
       attr_reader :pkg_relative_path
 
-      def self.artifact_dsl_key
-        :pkg
+      def self.from_args(cask, path, **options)
+        options.extend(HashValidator).assert_valid_keys(:allow_untrusted, :choices)
+        new(cask, path, **options)
       end
 
-      def load_pkg_description(pkg_description)
-        @pkg_relative_path = pkg_description.shift
-        @pkg_install_opts = pkg_description.shift
-        begin
-          if @pkg_install_opts.respond_to?(:keys)
-            @pkg_install_opts.extend(HashValidator).assert_valid_keys(:allow_untrusted, :choices)
-          elsif @pkg_install_opts
-            raise
-          end
-          raise if pkg_description.nil?
-        rescue StandardError
-          raise CaskInvalidError.new(@cask, "Bad pkg stanza")
-        end
+      attr_reader :path, :options
+
+      def initialize(cask, path, **options)
+        super(cask)
+        @path = cask.staged_path.join(path)
+        @options = options
       end
 
-      def pkg_install_opts(opt)
-        @pkg_install_opts[opt] if @pkg_install_opts.respond_to?(:keys)
+      def summarize
+        path.relative_path_from(cask.staged_path).to_s
       end
 
-      def install_phase
-        @cask.artifacts[:pkg].each { |pkg_description| run_installer(pkg_description) }
+      def install_phase(**options)
+        run_installer(**options)
       end
 
-      def run_installer(pkg_description)
-        load_pkg_description pkg_description
-        ohai "Running installer for #{@cask}; your password may be necessary."
+      private
+
+      def run_installer(command: nil, verbose: false, **options)
+        ohai "Running installer for #{cask}; your password may be necessary."
         ohai "Package installers may write to any location; options such as --appdir are ignored."
-        source = @cask.staged_path.join(pkg_relative_path)
-        unless source.exist?
-          raise CaskError, "pkg source file not found: '#{source}'"
+        unless path.exist?
+          raise CaskError, "pkg source file not found: '#{path.relative_path_from(cask.staged_path)}'"
         end
         args = [
-          "-pkg",    source,
+          "-pkg",    path,
           "-target", "/"
         ]
-        args << "-verboseR" if verbose?
-        args << "-allowUntrusted" if pkg_install_opts :allow_untrusted
+        args << "-verboseR" if verbose
+        args << "-allowUntrusted" if options.fetch(:allow_untrusted, false)
         with_choices_file do |choices_path|
           args << "-applyChoiceChangesXML" << choices_path if choices_path
-          @command.run!("/usr/sbin/installer", sudo: true, args: args, print_stdout: true)
+          command.run!("/usr/sbin/installer", sudo: true, args: args, print_stdout: true)
         end
       end
 
       def with_choices_file
-        return yield nil unless pkg_install_opts(:choices)
+        choices = options.fetch(:choices, {})
+        return yield nil if choices.empty?
 
         Tempfile.open(["choices", ".xml"]) do |file|
           begin
-            file.write Plist::Emit.dump(pkg_install_opts(:choices))
+            file.write Plist::Emit.dump(choices)
             file.close
             yield file.path
           ensure
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/prefpane.rb b/Library/Homebrew/cask/lib/hbc/artifact/prefpane.rb
index a44f8ae3a3..87f120934d 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/prefpane.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/prefpane.rb
@@ -3,7 +3,7 @@ require "hbc/artifact/moved"
 module Hbc
   module Artifact
     class Prefpane < Moved
-      def self.artifact_english_name
+      def self.english_name
         "Preference Pane"
       end
     end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/qlplugin.rb b/Library/Homebrew/cask/lib/hbc/artifact/qlplugin.rb
index ee41de2fe2..298714d894 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/qlplugin.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/qlplugin.rb
@@ -3,22 +3,24 @@ require "hbc/artifact/moved"
 module Hbc
   module Artifact
     class Qlplugin < Moved
-      def self.artifact_english_name
+      def self.english_name
         "QuickLook Plugin"
       end
 
-      def install_phase
-        super
-        reload_quicklook
+      def install_phase(**options)
+        super(**options)
+        reload_quicklook(**options)
       end
 
-      def uninstall_phase
-        super
-        reload_quicklook
+      def uninstall_phase(**options)
+        super(**options)
+        reload_quicklook(**options)
       end
 
-      def reload_quicklook
-        @command.run!("/usr/bin/qlmanage", args: ["-r"])
+      private
+
+      def reload_quicklook(command: nil, **_)
+        command.run!("/usr/bin/qlmanage", args: ["-r"])
       end
     end
   end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/relocated.rb b/Library/Homebrew/cask/lib/hbc/artifact/relocated.rb
index 0e8e42c9be..72a6f6bb56 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/relocated.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/relocated.rb
@@ -1,33 +1,57 @@
-require "hbc/artifact/base"
+require "hbc/artifact/abstract_artifact"
 
 require "hbc/utils/hash_validator"
 
 module Hbc
   module Artifact
-    class Relocated < Base
-      def summary
-        {
-          english_description: self.class.english_description,
-          contents:            @cask.artifacts[self.class.artifact_dsl_key].map(&method(:summarize_artifact)).compact,
-        }
+    class Relocated < AbstractArtifact
+      def self.from_args(cask, *args)
+        source_string, target_hash = args
+
+        if target_hash
+          raise CaskInvalidError unless target_hash.respond_to?(:keys)
+          target_hash.extend(HashValidator).assert_valid_keys(:target)
+        end
+
+        target_hash ||= {}
+
+        new(cask, source_string, **target_hash)
+      end
+
+      def self.resolve_target(target)
+        Hbc.public_send(dirmethod).join(target)
       end
 
       attr_reader :source, :target
 
-      def printable_target
-        target.to_s.sub(/^#{ENV['HOME']}(#{File::SEPARATOR}|$)/, "~/")
+      def initialize(cask, source, target: nil)
+        super(cask)
+
+        @source_string = source.to_s
+        @target_string = target.to_s
+        source = cask.staged_path.join(source)
+        @source = source
+        target ||= source.basename
+        @target = self.class.resolve_target(target)
       end
 
+      def summarize
+        target_string = @target_string.empty? ? "" : " -> #{@target_string}"
+        "#{@source_string}#{target_string}"
+      end
+
+      private
+
       ALT_NAME_ATTRIBUTE = "com.apple.metadata:kMDItemAlternateNames".freeze
 
       # Try to make the asset searchable under the target name.  Spotlight
       # respects this attribute for many filetypes, but ignores it for App
       # bundles. Alfred 2.2 respects it even for App bundles.
-      def add_altname_metadata(file, altname)
-        return if altname.casecmp(file.basename).zero?
+      def add_altname_metadata(file, altname, command: nil)
+        return if altname.to_s.casecmp(file.basename.to_s).zero?
         odebug "Adding #{ALT_NAME_ATTRIBUTE} metadata"
-        altnames = @command.run("/usr/bin/xattr",
-                                args:         ["-p", ALT_NAME_ATTRIBUTE, file.to_s],
+        altnames = command.run("/usr/bin/xattr",
+                                args:         ["-p", ALT_NAME_ATTRIBUTE, file],
                                 print_stderr: false).stdout.sub(/\A\((.*)\)\Z/, '\1')
         odebug "Existing metadata is: '#{altnames}'"
         altnames.concat(", ") unless altnames.empty?
@@ -35,31 +59,15 @@ module Hbc
         altnames = "(#{altnames})"
 
         # Some packages are shipped as u=rx (e.g. Bitcoin Core)
-        @command.run!("/bin/chmod", args: ["--", "u+rw", file, file.realpath])
+        command.run!("/bin/chmod", args: ["--", "u+rw", file, file.realpath])
 
-        @command.run!("/usr/bin/xattr",
+        command.run!("/usr/bin/xattr",
                       args:         ["-w", ALT_NAME_ATTRIBUTE, altnames, file],
                       print_stderr: false)
       end
 
-      def each_artifact
-        @cask.artifacts[self.class.artifact_dsl_key].each do |artifact|
-          load_specification(artifact)
-          yield
-        end
-      end
-
-      def load_specification(artifact_spec)
-        source_string, target_hash = artifact_spec
-        raise CaskInvalidError if source_string.nil?
-        @source = @cask.staged_path.join(source_string)
-        if target_hash
-          raise CaskInvalidError unless target_hash.respond_to?(:keys)
-          target_hash.extend(HashValidator).assert_valid_keys(:target)
-          @target = Hbc.send(self.class.artifact_dirmethod).join(target_hash[:target])
-        else
-          @target = Hbc.send(self.class.artifact_dirmethod).join(source.basename)
-        end
+      def printable_target
+        target.to_s.sub(/^#{ENV['HOME']}(#{File::SEPARATOR}|$)/, "~/")
       end
     end
   end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/stage_only.rb b/Library/Homebrew/cask/lib/hbc/artifact/stage_only.rb
index 1122c1d02d..7aef664690 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/stage_only.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/stage_only.rb
@@ -1,10 +1,18 @@
-require "hbc/artifact/base"
+require "hbc/artifact/abstract_artifact"
 
 module Hbc
   module Artifact
-    class StageOnly < Base
-      def self.artifact_dsl_key
-        :stage_only
+    class StageOnly < AbstractArtifact
+      def self.from_args(cask, *args)
+        if args != [true]
+          raise CaskInvalidError.new(cask.token, "'stage_only' takes only a single argument: true")
+        end
+
+        new(cask)
+      end
+
+      def initialize(cask)
+        super(cask)
       end
     end
   end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/suite.rb b/Library/Homebrew/cask/lib/hbc/artifact/suite.rb
index 35251f70c1..59ae58cf13 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/suite.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/suite.rb
@@ -3,11 +3,11 @@ require "hbc/artifact/moved"
 module Hbc
   module Artifact
     class Suite < Moved
-      def self.artifact_english_name
+      def self.english_name
         "App Suite"
       end
 
-      def self.artifact_dirmethod
+      def self.dirmethod
         :appdir
       end
     end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/symlinked.rb b/Library/Homebrew/cask/lib/hbc/artifact/symlinked.rb
index 16715fe81a..3726ebb5c5 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/symlinked.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/symlinked.rb
@@ -8,47 +8,18 @@ module Hbc
       end
 
       def self.english_description
-        "#{artifact_english_name} #{link_type_english_name}s"
+        "#{english_name} #{link_type_english_name}s"
       end
 
-      def install_phase
-        each_artifact(&method(:link))
+      def install_phase(**options)
+        link(**options)
       end
 
-      def uninstall_phase
-        each_artifact(&method(:unlink))
+      def uninstall_phase(**options)
+        unlink(**options)
       end
 
-      private
-
-      def link
-        unless source.exist?
-          raise CaskError, "It seems the #{self.class.link_type_english_name.downcase} source '#{source}' is not there."
-        end
-
-        if target.exist? && !target.symlink?
-          raise CaskError, "It seems there is already #{self.class.artifact_english_article} #{self.class.artifact_english_name} at '#{target}'; not linking."
-        end
-
-        ohai "Linking #{self.class.artifact_english_name} '#{source.basename}' to '#{target}'."
-        create_filesystem_link(source, target)
-      end
-
-      def unlink
-        return unless target.symlink?
-        ohai "Unlinking #{self.class.artifact_english_name} '#{target}'."
-        target.delete
-      end
-
-      def create_filesystem_link(source, target)
-        target.dirname.mkpath
-        @command.run!("/bin/ln", args: ["-h", "-f", "-s", "--", source, target])
-        add_altname_metadata source, target.basename.to_s
-      end
-
-      def summarize_artifact(artifact_spec)
-        load_specification artifact_spec
-
+      def summarize_installed
         if target.symlink? && target.exist? && target.readlink.exist?
           "#{printable_target} -> #{target.readlink} (#{target.readlink.abv})"
         else
@@ -61,6 +32,33 @@ module Hbc
           Formatter.error(string, label: "Broken Link")
         end
       end
+
+      private
+
+      def link(**options)
+        unless source.exist?
+          raise CaskError, "It seems the #{self.class.link_type_english_name.downcase} source '#{source}' is not there."
+        end
+
+        if target.exist? && !target.symlink?
+          raise CaskError, "It seems there is already #{self.class.english_article} #{self.class.english_name} at '#{target}'; not linking."
+        end
+
+        ohai "Linking #{self.class.english_name} '#{source.basename}' to '#{target}'."
+        create_filesystem_link(**options)
+      end
+
+      def unlink(**)
+        return unless target.symlink?
+        ohai "Unlinking #{self.class.english_name} '#{target}'."
+        target.delete
+      end
+
+      def create_filesystem_link(command: nil, **_)
+        target.dirname.mkpath
+        command.run!("/bin/ln", args: ["-h", "-f", "-s", "--", source, target])
+        add_altname_metadata(source, target.basename, command: command)
+      end
     end
   end
 end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/uninstall.rb b/Library/Homebrew/cask/lib/hbc/artifact/uninstall.rb
index 5a3dc098d9..2bbf82862a 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/uninstall.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/uninstall.rb
@@ -1,10 +1,10 @@
-require "hbc/artifact/uninstall_base"
+require "hbc/artifact/abstract_uninstall"
 
 module Hbc
   module Artifact
-    class Uninstall < UninstallBase
-      def uninstall_phase
-        dispatch_uninstall_directives
+    class Uninstall < AbstractUninstall
+      def uninstall_phase(**options)
+        dispatch_uninstall_directives(**options)
       end
     end
   end
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/zap.rb b/Library/Homebrew/cask/lib/hbc/artifact/zap.rb
index cdfe2531da..31ff54d201 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/zap.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/zap.rb
@@ -1,10 +1,10 @@
-require "hbc/artifact/uninstall_base"
+require "hbc/artifact/abstract_uninstall"
 
 module Hbc
   module Artifact
-    class Zap < UninstallBase
-      def zap_phase
-        dispatch_uninstall_directives
+    class Zap < AbstractUninstall
+      def zap_phase(**options)
+        dispatch_uninstall_directives(**options)
       end
     end
   end
diff --git a/Library/Homebrew/cask/lib/hbc/audit.rb b/Library/Homebrew/cask/lib/hbc/audit.rb
index b8bb6ab814..03d8cce826 100644
--- a/Library/Homebrew/cask/lib/hbc/audit.rb
+++ b/Library/Homebrew/cask/lib/hbc/audit.rb
@@ -214,12 +214,10 @@ module Hbc
     end
 
     def check_generic_artifacts
-      cask.artifacts[:artifact].each do |source, target_hash|
-        unless target_hash.is_a?(Hash) && target_hash[:target]
-          add_error "target required for generic artifact #{source}"
-          next
+      cask.artifacts[:artifact].each do |artifact|
+        unless artifact.target.absolute?
+          add_error "target must be absolute path for #{artifact.class.english_name} #{artifact.source}"
         end
-        add_error "target must be absolute path for generic artifact #{source}" unless Pathname.new(target_hash[:target]).absolute?
       end
     end
 
diff --git a/Library/Homebrew/cask/lib/hbc/cask.rb b/Library/Homebrew/cask/lib/hbc/cask.rb
index 6d89a997cc..27f8ae791f 100644
--- a/Library/Homebrew/cask/lib/hbc/cask.rb
+++ b/Library/Homebrew/cask/lib/hbc/cask.rb
@@ -17,7 +17,7 @@ module Hbc
       @token = token
       @sourcefile_path = sourcefile_path
       @tap = tap
-      @dsl = DSL.new(@token)
+      @dsl = DSL.new(self)
       return unless block_given?
       @dsl.instance_eval(&block)
       @dsl.language_eval
diff --git a/Library/Homebrew/cask/lib/hbc/cli/info.rb b/Library/Homebrew/cask/lib/hbc/cli/info.rb
index d26747e176..9cdada62e8 100644
--- a/Library/Homebrew/cask/lib/hbc/cli/info.rb
+++ b/Library/Homebrew/cask/lib/hbc/cli/info.rb
@@ -69,13 +69,11 @@ module Hbc
 
       def self.artifact_info(cask)
         ohai "Artifacts"
-        DSL::ORDINARY_ARTIFACT_TYPES.each do |type|
-          next if cask.artifacts[type].empty?
-          cask.artifacts[type].each do |artifact|
-            activatable_item = (type == :stage_only) ? "<none>" : artifact.first
-            puts "#{activatable_item} (#{type})"
-          end
-        end
+        DSL::ORDINARY_ARTIFACT_CLASSES.flat_map { |klass| klass.for_cask(cask) }
+                                      .select { |artifact| artifact.respond_to?(:install_phase) }
+                                      .each do |artifact|
+                                        puts artifact.to_s
+                                      end
       end
     end
   end
diff --git a/Library/Homebrew/cask/lib/hbc/cli/internal_stanza.rb b/Library/Homebrew/cask/lib/hbc/cli/internal_stanza.rb
index 4515fe9319..2727f95b70 100644
--- a/Library/Homebrew/cask/lib/hbc/cli/internal_stanza.rb
+++ b/Library/Homebrew/cask/lib/hbc/cli/internal_stanza.rb
@@ -21,34 +21,9 @@ module Hbc
       #     brew cask _stanza artifacts --table --yaml    alfred google-chrome adium voicemac logisim vagrant
       #
 
-      # TODO: this should be retrievable from Hbc::DSL
-      ARTIFACTS = Set.new [
-        :app,
-        :suite,
-        :artifact,
-        :prefpane,
-        :qlplugin,
-        :dictionary,
-        :font,
-        :service,
-        :colorpicker,
-        :binary,
-        :input_method,
-        :internet_plugin,
-        :audio_unit_plugin,
-        :vst_plugin,
-        :vst3_plugin,
-        :screen_saver,
-        :pkg,
-        :installer,
-        :stage_only,
-        :nested_container,
-        :uninstall,
-        :preflight,
-        :postflight,
-        :uninstall_preflight,
-        :uninstall_postflight,
-      ]
+      ARTIFACTS =
+        DSL::ORDINARY_ARTIFACT_CLASSES.map(&:dsl_key) +
+        DSL::ARTIFACT_BLOCK_CLASSES.map(&:dsl_key)
 
       option "--table",   :table,   false
       option "--quiet",   :quiet,   false
@@ -93,7 +68,7 @@ module Hbc
           end
 
           begin
-            value = cask.send(@stanza)
+            value = cask.send(stanza)
           rescue StandardError
             opoo "failure calling '#{stanza}' on Cask '#{cask}'" unless quiet?
             puts ""
@@ -108,8 +83,8 @@ module Hbc
 
           value = value.fetch(artifact_name).to_a.flatten if artifact_name
 
-          if @format
-            puts value.send(@format)
+          if format
+            puts value.send(format)
           elsif artifact_name || value.is_a?(Symbol)
             puts value.inspect
           else
diff --git a/Library/Homebrew/cask/lib/hbc/cli/list.rb b/Library/Homebrew/cask/lib/hbc/cli/list.rb
index 9d978360eb..4b5fcd8736 100644
--- a/Library/Homebrew/cask/lib/hbc/cli/list.rb
+++ b/Library/Homebrew/cask/lib/hbc/cli/list.rb
@@ -30,9 +30,9 @@ module Hbc
       end
 
       def self.list_artifacts(cask)
-        Artifact.for_cask(cask).each do |artifact|
-          summary = artifact.summary
-          ohai summary[:english_description], summary[:contents] unless summary.empty?
+        Artifact.for_cask(cask).group_by(&:class).each do |klass, artifacts|
+          next unless klass.respond_to?(:english_description)
+          ohai klass.english_description, artifacts.map(&:summarize_installed)
         end
       end
 
diff --git a/Library/Homebrew/cask/lib/hbc/dsl.rb b/Library/Homebrew/cask/lib/hbc/dsl.rb
index 8ad206c2f2..2dda476277 100644
--- a/Library/Homebrew/cask/lib/hbc/dsl.rb
+++ b/Library/Homebrew/cask/lib/hbc/dsl.rb
@@ -1,6 +1,8 @@
 require "set"
 require "locale"
 
+require "hbc/artifact"
+
 require "hbc/dsl/appcast"
 require "hbc/dsl/base"
 require "hbc/dsl/caveats"
@@ -8,7 +10,6 @@ require "hbc/dsl/conflicts_with"
 require "hbc/dsl/container"
 require "hbc/dsl/depends_on"
 require "hbc/dsl/gpg"
-require "hbc/dsl/installer"
 require "hbc/dsl/postflight"
 require "hbc/dsl/preflight"
 require "hbc/dsl/stanza_proxy"
@@ -18,39 +19,35 @@ require "hbc/dsl/version"
 
 module Hbc
   class DSL
-    ORDINARY_ARTIFACT_TYPES = [
-      :app,
-      :artifact,
-      :audio_unit_plugin,
-      :binary,
-      :colorpicker,
-      :dictionary,
-      :font,
-      :input_method,
-      :internet_plugin,
-      :pkg,
-      :prefpane,
-      :qlplugin,
-      :screen_saver,
-      :service,
-      :stage_only,
-      :suite,
-      :vst_plugin,
-      :vst3_plugin,
+    ORDINARY_ARTIFACT_CLASSES = [
+      Artifact::Installer,
+      Artifact::App,
+      Artifact::Artifact,
+      Artifact::AudioUnitPlugin,
+      Artifact::Binary,
+      Artifact::Colorpicker,
+      Artifact::Dictionary,
+      Artifact::Font,
+      Artifact::InputMethod,
+      Artifact::InternetPlugin,
+      Artifact::Pkg,
+      Artifact::Prefpane,
+      Artifact::Qlplugin,
+      Artifact::ScreenSaver,
+      Artifact::Service,
+      Artifact::StageOnly,
+      Artifact::Suite,
+      Artifact::VstPlugin,
+      Artifact::Vst3Plugin,
+      Artifact::Uninstall,
+      Artifact::Zap,
     ].freeze
 
-    ACTIVATABLE_ARTIFACT_TYPES = ([:installer, *ORDINARY_ARTIFACT_TYPES] - [:stage_only]).freeze
+    ACTIVATABLE_ARTIFACT_TYPES = (ORDINARY_ARTIFACT_CLASSES.map(&:dsl_key) - [:stage_only]).freeze
 
-    SPECIAL_ARTIFACT_TYPES = [
-      :uninstall,
-      :zap,
-    ].freeze
-
-    ARTIFACT_BLOCK_TYPES = [
-      :preflight,
-      :postflight,
-      :uninstall_preflight,
-      :uninstall_postflight,
+    ARTIFACT_BLOCK_CLASSES = [
+      Artifact::PreflightBlock,
+      Artifact::PostflightBlock,
     ].freeze
 
     DSL_METHODS = Set.new [
@@ -72,15 +69,15 @@ module Hbc
       :url,
       :version,
       :appdir,
-      *ORDINARY_ARTIFACT_TYPES,
+      *ORDINARY_ARTIFACT_CLASSES.map(&:dsl_key),
       *ACTIVATABLE_ARTIFACT_TYPES,
-      *SPECIAL_ARTIFACT_TYPES,
-      *ARTIFACT_BLOCK_TYPES,
+      *ARTIFACT_BLOCK_CLASSES.flat_map { |klass| [klass.dsl_key, klass.uninstall_dsl_key] },
     ].freeze
 
-    attr_reader :token
-    def initialize(token)
-      @token = token
+    attr_reader :token, :cask
+    def initialize(cask)
+      @cask = cask
+      @token = cask.token
     end
 
     def name(*args)
@@ -93,12 +90,14 @@ module Hbc
       return instance_variable_get("@#{stanza}") if should_return
 
       if instance_variable_defined?("@#{stanza}")
-        raise CaskInvalidError.new(token, "'#{stanza}' stanza may only appear once")
+        raise CaskInvalidError.new(cask, "'#{stanza}' stanza may only appear once.")
       end
 
       instance_variable_set("@#{stanza}", yield)
+    rescue CaskInvalidError
+      raise
     rescue StandardError => e
-      raise CaskInvalidError.new(token, "'#{stanza}' stanza failed with: #{e}")
+      raise CaskInvalidError.new(cask, "'#{stanza}' stanza failed with: #{e}")
     end
 
     def homepage(homepage = nil)
@@ -113,7 +112,7 @@ module Hbc
         return unless default
 
         unless @language_blocks.default.nil?
-          raise CaskInvalidError.new(token, "Only one default language may be defined")
+          raise CaskInvalidError.new(cask, "Only one default language may be defined.")
         end
 
         @language_blocks.default = block
@@ -163,7 +162,7 @@ module Hbc
           DSL::Container.new(*args).tap do |container|
             # TODO: remove this backward-compatibility section after removing nested_container
             if container && container.nested
-              artifacts[:nested_container] << container.nested
+              artifacts[:nested_container] << Artifact::NestedContainer.new(cask, container.nested)
             end
           end
         end
@@ -173,7 +172,7 @@ module Hbc
     def version(arg = nil)
       set_unique_stanza(:version, arg.nil?) do
         if !arg.is_a?(String) && arg != :latest
-          raise CaskInvalidError.new(token, "invalid 'version' value: '#{arg.inspect}'")
+          raise CaskInvalidError.new(cask, "invalid 'version' value: '#{arg.inspect}'")
         end
         DSL::Version.new(arg)
       end
@@ -182,7 +181,7 @@ module Hbc
     def sha256(arg = nil)
       set_unique_stanza(:sha256, arg.nil?) do
         if !arg.is_a?(String) && arg != :no_check
-          raise CaskInvalidError.new(token, "invalid 'sha256' value: '#{arg.inspect}'")
+          raise CaskInvalidError.new(cask, "invalid 'sha256' value: '#{arg.inspect}'")
         end
         arg
       end
@@ -195,7 +194,7 @@ module Hbc
       begin
         @depends_on.load(*args)
       rescue RuntimeError => e
-        raise CaskInvalidError.new(token, e)
+        raise CaskInvalidError.new(cask, e)
       end
       @depends_on
     end
@@ -237,39 +236,29 @@ module Hbc
       set_unique_stanza(:auto_updates, auto_updates.nil?) { auto_updates }
     end
 
-    ORDINARY_ARTIFACT_TYPES.each do |type|
+    ORDINARY_ARTIFACT_CLASSES.each do |klass|
+      type = klass.dsl_key
+
       define_method(type) do |*args|
-        if type == :stage_only
-          if args != [true]
-            raise CaskInvalidError.new(token, "'stage_only' takes a single argument: true")
+        begin
+          if [*artifacts.keys, type].include?(:stage_only) && (artifacts.keys & ACTIVATABLE_ARTIFACT_TYPES).any?
+            raise CaskInvalidError.new(cask, "'stage_only' must be the only activatable artifact.")
           end
 
-          unless (artifacts.keys & ACTIVATABLE_ARTIFACT_TYPES).empty?
-            raise CaskInvalidError.new(token, "'stage_only' must be the only activatable artifact")
-          end
+          artifacts[type].add(klass.from_args(cask, *args))
+        rescue CaskInvalidError
+          raise
+        rescue StandardError => e
+          raise CaskInvalidError.new(cask, "invalid '#{klass.dsl_key}' stanza: #{e}")
         end
-
-        artifacts[type].add(args)
       end
     end
 
-    def installer(*args)
-      return artifacts[:installer] if args.empty?
-      artifacts[:installer] << DSL::Installer.new(*args)
-      raise "'stage_only' must be the only activatable artifact" if artifacts.key?(:stage_only)
-    rescue StandardError => e
-      raise CaskInvalidError.new(token, e)
-    end
-
-    SPECIAL_ARTIFACT_TYPES.each do |type|
-      define_method(type) do |*args|
-        artifacts[type].merge(args)
-      end
-    end
-
-    ARTIFACT_BLOCK_TYPES.each do |type|
-      define_method(type) do |&block|
-        artifacts[type] << block
+    ARTIFACT_BLOCK_CLASSES.each do |klass|
+      [klass.dsl_key, klass.uninstall_dsl_key].each do |dsl_key|
+        define_method(dsl_key) do |&block|
+          artifacts[dsl_key] << block
+        end
       end
     end
 
diff --git a/Library/Homebrew/cask/lib/hbc/dsl/installer.rb b/Library/Homebrew/cask/lib/hbc/dsl/installer.rb
deleted file mode 100644
index b01b28d762..0000000000
--- a/Library/Homebrew/cask/lib/hbc/dsl/installer.rb
+++ /dev/null
@@ -1,32 +0,0 @@
-module Hbc
-  class DSL
-    class Installer
-      VALID_KEYS = Set.new [
-        :manual,
-        :script,
-      ]
-
-      attr_accessor(*VALID_KEYS)
-
-      def initialize(*parameters)
-        raise CaskInvalidError.new(token, "'installer' stanza requires an argument") if parameters.empty?
-        parameters = {}.merge(*parameters)
-        if parameters.key?(:script) && !parameters[:script].respond_to?(:key?)
-          if parameters.key?(:executable)
-            raise CaskInvalidError.new(token, "'installer' stanza gave arguments for both :script and :executable")
-          end
-          parameters[:executable] = parameters[:script]
-          parameters.delete(:script)
-          parameters = { script: parameters }
-        end
-        unless parameters.keys.length == 1
-          raise "invalid 'installer' stanza: only one of #{VALID_KEYS.inspect} is permitted"
-        end
-        key = parameters.keys.first
-        raise "invalid 'installer' stanza key: '#{key.inspect}'" unless VALID_KEYS.include?(key)
-        writer_method = "#{key}=".to_sym
-        send(writer_method, parameters[key])
-      end
-    end
-  end
-end
diff --git a/Library/Homebrew/cask/lib/hbc/installer.rb b/Library/Homebrew/cask/lib/hbc/installer.rb
index 37cc4e5612..b9c34e3a1d 100644
--- a/Library/Homebrew/cask/lib/hbc/installer.rb
+++ b/Library/Homebrew/cask/lib/hbc/installer.rb
@@ -177,7 +177,7 @@ module Hbc
       already_installed_artifacts = []
 
       odebug "Installing artifacts"
-      artifacts = Artifact.for_cask(@cask, command: @command, verbose: verbose?, force: force?)
+      artifacts = Artifact.for_cask(@cask)
       odebug "#{artifacts.length} artifact/s defined", artifacts
 
       artifacts.each do |artifact|
@@ -188,7 +188,7 @@ module Hbc
           next unless binaries?
         end
 
-        artifact.install_phase
+        artifact.install_phase(command: @command, verbose: verbose?, force: force?)
         already_installed_artifacts.unshift(artifact)
       end
     rescue StandardError => e
@@ -196,7 +196,7 @@ module Hbc
         already_installed_artifacts.each do |artifact|
           next unless artifact.respond_to?(:uninstall_phase)
           odebug "Reverting installation of artifact of class #{artifact.class}"
-          artifact.uninstall_phase
+          artifact.uninstall_phase(command: @command, verbose: verbose?, force: force?)
         end
       ensure
         purge_versioned_files
@@ -374,25 +374,27 @@ module Hbc
 
     def uninstall_artifacts
       odebug "Un-installing artifacts"
-      artifacts = Artifact.for_cask(@cask, command: @command, verbose: verbose?, force: force?)
+      artifacts = Artifact.for_cask(@cask)
 
       odebug "#{artifacts.length} artifact/s defined", artifacts
 
       artifacts.each do |artifact|
         next unless artifact.respond_to?(:uninstall_phase)
         odebug "Un-installing artifact of class #{artifact.class}"
-        artifact.uninstall_phase
+        artifact.uninstall_phase(command: @command, verbose: verbose?, force: force?)
       end
     end
 
     def zap
       ohai %Q(Implied "brew cask uninstall #{@cask}")
       uninstall_artifacts
-      if Artifact::Zap.me?(@cask)
-        ohai "Dispatching zap stanza"
-        Artifact::Zap.new(@cask, command: @command).zap_phase
-      else
+      if (zap_stanzas = Artifact::Zap.for_cask(@cask)).empty?
         opoo "No zap stanza present for Cask '#{@cask}'"
+      else
+        ohai "Dispatching zap stanza"
+        zap_stanzas.each do |stanza|
+          stanza.zap_phase(command: @command, verbose: verbose?, force: force?)
+        end
       end
       ohai "Removing all staged versions of Cask '#{@cask}'"
       purge_caskroom_path
diff --git a/Library/Homebrew/cask/lib/hbc/staged.rb b/Library/Homebrew/cask/lib/hbc/staged.rb
index c1aa01b295..dc21279dee 100644
--- a/Library/Homebrew/cask/lib/hbc/staged.rb
+++ b/Library/Homebrew/cask/lib/hbc/staged.rb
@@ -4,7 +4,7 @@ module Hbc
       index =  0 if index == :first
       index =  1 if index == :second
       index = -1 if index == :last
-      Hbc.appdir.join(@cask.artifacts[:app].to_a.at(index).first, "Contents", "Info.plist")
+      @cask.artifacts[:app].to_a.at(index).target.join("Contents", "Info.plist")
     end
 
     def plist_exec(cmd)
diff --git a/Library/Homebrew/test/cask/artifact/alt_target_spec.rb b/Library/Homebrew/test/cask/artifact/alt_target_spec.rb
index 9e8d83bb4a..02be796edc 100644
--- a/Library/Homebrew/test/cask/artifact/alt_target_spec.rb
+++ b/Library/Homebrew/test/cask/artifact/alt_target_spec.rb
@@ -3,7 +3,7 @@ describe Hbc::Artifact::App, :cask do
     let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-alt-target.rb") }
 
     let(:install_phase) {
-      -> { Hbc::Artifact::App.new(cask).install_phase }
+      -> { described_class.for_cask(cask).each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) } }
     }
 
     let(:source_path) { cask.staged_path.join("Caffeine.app") }
diff --git a/Library/Homebrew/test/cask/artifact/app_spec.rb b/Library/Homebrew/test/cask/artifact/app_spec.rb
index 0add472e21..f67ffd31b5 100644
--- a/Library/Homebrew/test/cask/artifact/app_spec.rb
+++ b/Library/Homebrew/test/cask/artifact/app_spec.rb
@@ -2,13 +2,13 @@ describe Hbc::Artifact::App, :cask do
   let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/local-caffeine.rb") }
   let(:command) { Hbc::SystemCommand }
   let(:force) { false }
-  let(:app) { Hbc::Artifact::App.new(cask, command: command, force: force) }
+  let(:app) { described_class.for_cask(cask).first }
 
   let(:source_path) { cask.staged_path.join("Caffeine.app") }
   let(:target_path) { Hbc.appdir.join("Caffeine.app") }
 
-  let(:install_phase) { app.install_phase }
-  let(:uninstall_phase) { app.uninstall_phase }
+  let(:install_phase) { app.install_phase(command: command, force: force) }
+  let(:uninstall_phase) { app.uninstall_phase(command: command, force: force) }
 
   before(:each) do
     InstallHelper.install_without_artifacts(cask)
@@ -105,8 +105,8 @@ describe Hbc::Artifact::App, :cask do
 
         describe "target is user-owned but contains read-only files" do
           before(:each) do
-            system "/usr/bin/touch", "--", "#{target_path}/foo"
-            system "/bin/chmod", "--", "0555", target_path
+            FileUtils.touch "#{target_path}/foo"
+            FileUtils.chmod 0555, target_path
           end
 
           it "overwrites the existing app" do
@@ -138,7 +138,7 @@ describe Hbc::Artifact::App, :cask do
           end
 
           after(:each) do
-            system "/bin/chmod", "--", "0755", target_path
+            FileUtils.chmod 0755, target_path
           end
         end
       end
@@ -206,8 +206,8 @@ describe Hbc::Artifact::App, :cask do
   end
 
   describe "summary" do
-    let(:description) { app.summary[:english_description] }
-    let(:contents) { app.summary[:contents] }
+    let(:description) { app.class.english_description }
+    let(:contents) { app.summarize_installed }
 
     it "returns the correct english_description" do
       expect(description).to eq("Apps")
@@ -217,14 +217,13 @@ describe Hbc::Artifact::App, :cask do
       it "returns the path to the app" do
         install_phase
 
-        expect(contents).to eq(["#{target_path} (#{target_path.abv})"])
+        expect(contents).to eq("#{target_path} (#{target_path.abv})")
       end
     end
 
     describe "app is missing" do
       it "returns a warning and the supposed path to the app" do
-        expect(contents.size).to eq(1)
-        expect(contents[0]).to match(/.*Missing App.*: #{target_path}/)
+        expect(contents).to match(/.*Missing App.*: #{target_path}/)
       end
     end
   end
diff --git a/Library/Homebrew/test/cask/artifact/binary_spec.rb b/Library/Homebrew/test/cask/artifact/binary_spec.rb
index ce00e39357..5ffaca861f 100644
--- a/Library/Homebrew/test/cask/artifact/binary_spec.rb
+++ b/Library/Homebrew/test/cask/artifact/binary_spec.rb
@@ -26,7 +26,8 @@ describe Hbc::Artifact::Binary, :cask do
   end
 
   it "links the binary to the proper directory" do
-    Hbc::Artifact::Binary.new(cask).install_phase
+    described_class.for_cask(cask)
+      .each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) }
 
     expect(expected_path).to be_a_symlink
     expect(expected_path.readlink).to exist
@@ -45,7 +46,8 @@ describe Hbc::Artifact::Binary, :cask do
       expect(FileUtils).to receive(:chmod)
         .with("+x", cask.staged_path.join("naked_non_executable")).and_call_original
 
-      Hbc::Artifact::Binary.new(cask).install_phase
+      described_class.for_cask(cask)
+      .each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) }
 
       expect(expected_path).to be_a_symlink
       expect(expected_path.readlink).to be_executable
@@ -56,7 +58,8 @@ describe Hbc::Artifact::Binary, :cask do
     FileUtils.touch expected_path
 
     expect {
-      Hbc::Artifact::Binary.new(cask).install_phase
+      described_class.for_cask(cask)
+        .each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) }
     }.to raise_error(Hbc::CaskError)
 
     expect(expected_path).not_to be :symlink?
@@ -65,7 +68,8 @@ describe Hbc::Artifact::Binary, :cask do
   it "clobbers an existing symlink" do
     expected_path.make_symlink("/tmp")
 
-    Hbc::Artifact::Binary.new(cask).install_phase
+    described_class.for_cask(cask)
+      .each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) }
 
     expect(File.readlink(expected_path)).not_to eq("/tmp")
   end
@@ -73,7 +77,8 @@ describe Hbc::Artifact::Binary, :cask do
   it "creates parent directory if it doesn't exist" do
     FileUtils.rmdir Hbc.binarydir
 
-    Hbc::Artifact::Binary.new(cask).install_phase
+    described_class.for_cask(cask)
+      .each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) }
 
     expect(expected_path.exist?).to be true
   end
@@ -86,8 +91,10 @@ describe Hbc::Artifact::Binary, :cask do
     }
 
     it "links the binary to the proper directory" do
-      Hbc::Artifact::App.new(cask).install_phase
-      Hbc::Artifact::Binary.new(cask).install_phase
+      Hbc::Artifact::App.for_cask(cask)
+        .each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) }
+      described_class.for_cask(cask)
+        .each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) }
 
       expect(expected_path).to be_a_symlink
       expect(expected_path.readlink).to exist
diff --git a/Library/Homebrew/test/cask/artifact/generic_artifact_spec.rb b/Library/Homebrew/test/cask/artifact/generic_artifact_spec.rb
index cb2ef9850d..bec8c27428 100644
--- a/Library/Homebrew/test/cask/artifact/generic_artifact_spec.rb
+++ b/Library/Homebrew/test/cask/artifact/generic_artifact_spec.rb
@@ -2,7 +2,7 @@ describe Hbc::Artifact::Artifact, :cask do
   let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-generic-artifact.rb") }
 
   let(:install_phase) {
-    -> { Hbc::Artifact::Artifact.new(cask).install_phase }
+    -> { described_class.for_cask(cask).each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) } }
   }
 
   let(:source_path) { cask.staged_path.join("Caffeine.app") }
@@ -12,11 +12,11 @@ describe Hbc::Artifact::Artifact, :cask do
     InstallHelper.install_without_artifacts(cask)
   end
 
-  describe "with no target" do
-    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-generic-artifact-no-target.rb") }
-
-    it "fails to install with no target" do
-      expect(install_phase).to raise_error(Hbc::CaskInvalidError)
+  context "without target" do
+    it "fails to load" do
+      expect {
+        Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-generic-artifact-no-target.rb")
+      }.to raise_error(Hbc::CaskInvalidError, /target required for Generic Artifact/)
     end
   end
 
diff --git a/Library/Homebrew/test/cask/artifact/nested_container_spec.rb b/Library/Homebrew/test/cask/artifact/nested_container_spec.rb
index be7ba5ff87..41d143764b 100644
--- a/Library/Homebrew/test/cask/artifact/nested_container_spec.rb
+++ b/Library/Homebrew/test/cask/artifact/nested_container_spec.rb
@@ -5,7 +5,8 @@ describe Hbc::Artifact::NestedContainer, :cask do
         InstallHelper.install_without_artifacts(c)
       end
 
-      Hbc::Artifact::NestedContainer.new(cask).install_phase
+      described_class.for_cask(cask)
+        .each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) }
 
       expect(cask.staged_path.join("MyNestedApp.app")).to be_a_directory
     end
diff --git a/Library/Homebrew/test/cask/artifact/pkg_spec.rb b/Library/Homebrew/test/cask/artifact/pkg_spec.rb
index 3e62616ea2..c6a45c49ab 100644
--- a/Library/Homebrew/test/cask/artifact/pkg_spec.rb
+++ b/Library/Homebrew/test/cask/artifact/pkg_spec.rb
@@ -8,7 +8,7 @@ describe Hbc::Artifact::Pkg, :cask do
 
   describe "install_phase" do
     it "runs the system installer on the specified pkgs" do
-      pkg = Hbc::Artifact::Pkg.new(cask, command: fake_system_command)
+      pkg = described_class.for_cask(cask).first
 
       expect(fake_system_command).to receive(:run!).with(
         "/usr/sbin/installer",
@@ -17,7 +17,7 @@ describe Hbc::Artifact::Pkg, :cask do
         print_stdout: true,
       )
 
-      pkg.install_phase
+      pkg.install_phase(command: fake_system_command)
     end
   end
 
@@ -25,7 +25,7 @@ describe Hbc::Artifact::Pkg, :cask do
     let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-choices.rb") }
 
     it "passes the choice changes xml to the system installer" do
-      pkg = Hbc::Artifact::Pkg.new(cask, command: fake_system_command)
+      pkg = described_class.for_cask(cask).first
 
       file = double(path: Pathname.new("/tmp/choices.xml"))
 
@@ -57,7 +57,7 @@ describe Hbc::Artifact::Pkg, :cask do
         print_stdout: true,
       )
 
-      pkg.install_phase
+      pkg.install_phase(command: fake_system_command)
     end
   end
 end
diff --git a/Library/Homebrew/test/cask/artifact/postflight_block_spec.rb b/Library/Homebrew/test/cask/artifact/postflight_block_spec.rb
index 51b1431f03..4a44bb59be 100644
--- a/Library/Homebrew/test/cask/artifact/postflight_block_spec.rb
+++ b/Library/Homebrew/test/cask/artifact/postflight_block_spec.rb
@@ -11,7 +11,8 @@ describe Hbc::Artifact::PostflightBlock, :cask do
         end
       end
 
-      described_class.new(cask).install_phase
+      described_class.for_cask(cask)
+        .each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) }
 
       expect(called).to be true
       expect(yielded_arg).to be_kind_of(Hbc::DSL::Postflight)
@@ -30,7 +31,8 @@ describe Hbc::Artifact::PostflightBlock, :cask do
         end
       end
 
-      described_class.new(cask).uninstall_phase
+      described_class.for_cask(cask)
+        .each { |artifact| artifact.uninstall_phase(command: Hbc::NeverSudoSystemCommand, force: false) }
 
       expect(called).to be true
       expect(yielded_arg).to be_kind_of(Hbc::DSL::UninstallPostflight)
diff --git a/Library/Homebrew/test/cask/artifact/preflight_block_spec.rb b/Library/Homebrew/test/cask/artifact/preflight_block_spec.rb
index b13c4ab9d3..d7d4e72d93 100644
--- a/Library/Homebrew/test/cask/artifact/preflight_block_spec.rb
+++ b/Library/Homebrew/test/cask/artifact/preflight_block_spec.rb
@@ -11,7 +11,8 @@ describe Hbc::Artifact::PreflightBlock, :cask do
         end
       end
 
-      described_class.new(cask).install_phase
+      described_class.for_cask(cask)
+        .each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) }
 
       expect(called).to be true
       expect(yielded_arg).to be_kind_of Hbc::DSL::Preflight
@@ -30,7 +31,8 @@ describe Hbc::Artifact::PreflightBlock, :cask do
         end
       end
 
-      described_class.new(cask).uninstall_phase
+      described_class.for_cask(cask)
+        .each { |artifact| artifact.uninstall_phase(command: Hbc::NeverSudoSystemCommand, force: false) }
 
       expect(called).to be true
       expect(yielded_arg).to be_kind_of Hbc::DSL::UninstallPreflight
diff --git a/Library/Homebrew/test/cask/artifact/suite_spec.rb b/Library/Homebrew/test/cask/artifact/suite_spec.rb
index 8c217a9e0c..2f913fecc7 100644
--- a/Library/Homebrew/test/cask/artifact/suite_spec.rb
+++ b/Library/Homebrew/test/cask/artifact/suite_spec.rb
@@ -1,7 +1,9 @@
 describe Hbc::Artifact::Suite, :cask do
   let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-suite.rb") }
 
-  let(:install_phase) { -> { Hbc::Artifact::Suite.new(cask).install_phase } }
+  let(:install_phase) {
+    -> { described_class.for_cask(cask).each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) } }
+  }
 
   let(:target_path) { Hbc.appdir.join("Caffeine") }
   let(:source_path) { cask.staged_path.join("Caffeine") }
diff --git a/Library/Homebrew/test/cask/artifact/two_apps_correct_spec.rb b/Library/Homebrew/test/cask/artifact/two_apps_correct_spec.rb
index a1fdd3b74c..f6e0d3c97b 100644
--- a/Library/Homebrew/test/cask/artifact/two_apps_correct_spec.rb
+++ b/Library/Homebrew/test/cask/artifact/two_apps_correct_spec.rb
@@ -3,7 +3,7 @@ describe Hbc::Artifact::App, :cask do
     let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-two-apps-correct.rb") }
 
     let(:install_phase) {
-      -> { Hbc::Artifact::App.new(cask).install_phase }
+      -> { described_class.for_cask(cask).each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) } }
     }
 
     let(:source_path_mini) { cask.staged_path.join("Caffeine Mini.app") }
diff --git a/Library/Homebrew/test/cask/artifact/uninstall_no_zap_spec.rb b/Library/Homebrew/test/cask/artifact/uninstall_no_zap_spec.rb
index 8cd0b1e41e..d6a8393dac 100644
--- a/Library/Homebrew/test/cask/artifact/uninstall_no_zap_spec.rb
+++ b/Library/Homebrew/test/cask/artifact/uninstall_no_zap_spec.rb
@@ -2,7 +2,7 @@ describe Hbc::Artifact::Zap, :cask do
   let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-installable.rb") }
 
   let(:zap_artifact) {
-    Hbc::Artifact::Zap.new(cask)
+    described_class.for_cask(cask).first
   }
 
   before(:each) do
diff --git a/Library/Homebrew/test/cask/artifact/uninstall_zap_shared_examples.rb b/Library/Homebrew/test/cask/artifact/uninstall_zap_shared_examples.rb
index 0e522bc210..06eec4a011 100644
--- a/Library/Homebrew/test/cask/artifact/uninstall_zap_shared_examples.rb
+++ b/Library/Homebrew/test/cask/artifact/uninstall_zap_shared_examples.rb
@@ -1,12 +1,12 @@
 shared_examples "#uninstall_phase or #zap_phase" do
-  let(:artifact_name) { described_class.artifact_name }
-  let(:artifact) { described_class.new(cask, command: fake_system_command) }
+  let(:artifact_dsl_key) { described_class.dsl_key }
+  let(:artifact) { described_class.for_cask(cask).first }
   let(:fake_system_command) { Hbc::FakeSystemCommand }
 
-  subject { artifact.public_send(:"#{artifact_name}_phase") }
+  subject { artifact.public_send(:"#{artifact_dsl_key}_phase", command: fake_system_command) }
 
   context "using :launchctl" do
-    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_name}-launchctl.rb") }
+    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_dsl_key}-launchctl.rb") }
     let(:launchctl_list_cmd) { %w[/bin/launchctl list my.fancy.package.service] }
     let(:launchctl_remove_cmd) { %w[/bin/launchctl remove my.fancy.package.service] }
     let(:unknown_response) { "launchctl list returned unknown response\n" }
@@ -61,7 +61,7 @@ shared_examples "#uninstall_phase or #zap_phase" do
   context "using :pkgutil" do
     let(:fake_system_command) { class_double(Hbc::SystemCommand) }
 
-    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_name}-pkgutil.rb") }
+    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_dsl_key}-pkgutil.rb") }
 
     let(:main_pkg_id) { "my.fancy.package.main" }
     let(:agent_pkg_id) { "my.fancy.package.agent" }
@@ -85,7 +85,7 @@ shared_examples "#uninstall_phase or #zap_phase" do
   end
 
   context "using :kext" do
-    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_name}-kext.rb") }
+    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_dsl_key}-kext.rb") }
     let(:kext_id) { "my.fancy.package.kernelextension" }
 
     it "is supported" do
@@ -110,7 +110,7 @@ shared_examples "#uninstall_phase or #zap_phase" do
   end
 
   context "using :quit" do
-    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_name}-quit.rb") }
+    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_dsl_key}-quit.rb") }
     let(:bundle_id) { "my.fancy.package.app" }
     let(:quit_application_script) do
       %Q(tell application id "#{bundle_id}" to quit)
@@ -130,7 +130,7 @@ shared_examples "#uninstall_phase or #zap_phase" do
   end
 
   context "using :signal" do
-    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_name}-signal.rb") }
+    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_dsl_key}-signal.rb") }
     let(:bundle_id) { "my.fancy.package.app" }
     let(:signals) { %w[TERM KILL] }
     let(:unix_pids) { [12_345, 67_890] }
@@ -170,10 +170,10 @@ shared_examples "#uninstall_phase or #zap_phase" do
       end
 
       let(:fake_system_command) { Hbc::NeverSudoSystemCommand }
-      let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_name}-#{directive}.rb") }
+      let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_dsl_key}-#{directive}.rb") }
 
       before(:each) do
-        allow_any_instance_of(Hbc::Artifact::UninstallBase).to receive(:trash_paths)
+        allow_any_instance_of(Hbc::Artifact::AbstractUninstall).to receive(:trash_paths)
           .and_wrap_original do |method, *args|
             result = method.call(*args)
             FileUtils.rm_rf result.stdout.split("\0")
@@ -196,7 +196,7 @@ shared_examples "#uninstall_phase or #zap_phase" do
 
   context "using :rmdir" do
     let(:fake_system_command) { Hbc::NeverSudoSystemCommand }
-    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_name}-rmdir.rb") }
+    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_dsl_key}-rmdir.rb") }
     let(:empty_directory) { Pathname.new("#{TEST_TMPDIR}/empty_directory_path") }
     let(:ds_store) { empty_directory.join(".DS_Store") }
 
@@ -223,7 +223,7 @@ shared_examples "#uninstall_phase or #zap_phase" do
   [:script, :early_script].each do |script_type|
     context "using #{script_type.inspect}" do
       let(:fake_system_command) { Hbc::NeverSudoSystemCommand }
-      let(:token) { "with-#{artifact_name}-#{script_type}".tr("_", "-") }
+      let(:token) { "with-#{artifact_dsl_key}-#{script_type}".tr("_", "-") }
       let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/#{token}.rb") }
       let(:script_pathname) { cask.staged_path.join("MyFancyPkg", "FancyUninstaller.tool") }
 
@@ -250,7 +250,7 @@ shared_examples "#uninstall_phase or #zap_phase" do
   end
 
   context "using :login_item" do
-    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_name}-login-item.rb") }
+    let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-#{artifact_dsl_key}-login-item.rb") }
 
     it "is supported" do
       Hbc::FakeSystemCommand.expects_command(
diff --git a/Library/Homebrew/test/cask/audit_spec.rb b/Library/Homebrew/test/cask/audit_spec.rb
index ddc773e3e2..7e140acb24 100644
--- a/Library/Homebrew/test/cask/audit_spec.rb
+++ b/Library/Homebrew/test/cask/audit_spec.rb
@@ -265,19 +265,14 @@ describe Hbc::Audit, :cask do
     end
 
     describe "generic artifact checks" do
-      context "with no target" do
-        let(:cask_token) { "generic-artifact-no-target" }
-        it { is_expected.to fail_with(/target required for generic artifact/) }
-      end
-
       context "with relative target" do
         let(:cask_token) { "generic-artifact-relative-target" }
-        it { is_expected.to fail_with(/target must be absolute path for generic artifact/) }
+        it { is_expected.to fail_with(/target must be absolute path for Generic Artifact/) }
       end
 
       context "with absolute target" do
         let(:cask_token) { "generic-artifact-absolute-target" }
-        it { should_not fail_with(/target required for generic artifact/) }
+        it { should_not fail_with(/target required for Generic Artifact/) }
       end
     end
 
diff --git a/Library/Homebrew/test/cask/cli/info_spec.rb b/Library/Homebrew/test/cask/cli/info_spec.rb
index bffe900ec4..aec7080dea 100644
--- a/Library/Homebrew/test/cask/cli/info_spec.rb
+++ b/Library/Homebrew/test/cask/cli/info_spec.rb
@@ -10,7 +10,7 @@ describe Hbc::CLI::Info, :cask do
       ==> Name
       None
       ==> Artifacts
-      Caffeine.app (app)
+      Caffeine.app (App)
     EOS
   end
 
@@ -24,7 +24,7 @@ describe Hbc::CLI::Info, :cask do
         ==> Name
         None
         ==> Artifacts
-        Caffeine.app (app)
+        Caffeine.app (App)
         local-transmission: 2.61
         http://example.com/local-transmission
         Not installed
@@ -32,7 +32,7 @@ describe Hbc::CLI::Info, :cask do
         ==> Name
         None
         ==> Artifacts
-        Transmission.app (app)
+        Transmission.app (App)
       EOS
     }
 
@@ -60,7 +60,7 @@ describe Hbc::CLI::Info, :cask do
       ==> Name
       None
       ==> Artifacts
-      Caffeine.app (app)
+      Caffeine.app (App)
       ==> Caveats
       Here are some things you might want to know.
 
@@ -86,7 +86,7 @@ describe Hbc::CLI::Info, :cask do
       ==> Name
       None
       ==> Artifacts
-      Caffeine.app (app)
+      Caffeine.app (App)
     EOS
   end
 
diff --git a/Library/Homebrew/test/cask/cli/list_spec.rb b/Library/Homebrew/test/cask/cli/list_spec.rb
index ecca3035f5..fd6997f412 100644
--- a/Library/Homebrew/test/cask/cli/list_spec.rb
+++ b/Library/Homebrew/test/cask/cli/list_spec.rb
@@ -48,7 +48,8 @@ describe Hbc::CLI::List, :cask do
     it "lists the installed files for those Casks" do
       casks.each(&InstallHelper.method(:install_without_artifacts_with_caskfile))
 
-      Hbc::Artifact::App.new(transmission).install_phase
+      Hbc::Artifact::App.for_cask(transmission)
+        .each { |artifact| artifact.install_phase(command: Hbc::NeverSudoSystemCommand, force: false) }
 
       expect {
         Hbc::CLI::List.run("local-transmission", "local-caffeine")
diff --git a/Library/Homebrew/test/cask/dsl_spec.rb b/Library/Homebrew/test/cask/dsl_spec.rb
index 7f2207a877..aec1e917f3 100644
--- a/Library/Homebrew/test/cask/dsl_spec.rb
+++ b/Library/Homebrew/test/cask/dsl_spec.rb
@@ -186,12 +186,12 @@ describe Hbc::DSL, :cask do
         app "Bar.app"
       end
 
-      expect(Array(cask.artifacts[:app])).to eq([["Foo.app"], ["Bar.app"]])
+      expect(cask.artifacts[:app].map(&:to_s)).to eq(["Foo.app (App)", "Bar.app (App)"])
     end
 
     it "allow app stanzas to be empty" do
       cask = Hbc::Cask.new("cask-with-no-apps")
-      expect(Array(cask.artifacts[:app])).to eq([])
+      expect(cask.artifacts[:app]).to be_empty
     end
   end
 
@@ -219,7 +219,7 @@ describe Hbc::DSL, :cask do
         pkg "Bar.pkg"
       end
 
-      expect(Array(cask.artifacts[:pkg])).to eq([["Foo.pkg"], ["Bar.pkg"]])
+      expect(cask.artifacts[:pkg].map(&:to_s)).to eq(["Foo.pkg (Pkg)", "Bar.pkg (Pkg)"])
     end
   end
 
@@ -471,10 +471,10 @@ describe Hbc::DSL, :cask do
       let(:token) { "with-installer-script" }
 
       it "allows installer script to be specified" do
-        expect(cask.artifacts[:installer].first.script[:executable]).to eq("/usr/bin/true")
-        expect(cask.artifacts[:installer].first.script[:args]).to eq(["--flag"])
-        expect(cask.artifacts[:installer].to_a[1].script[:executable]).to eq("/usr/bin/false")
-        expect(cask.artifacts[:installer].to_a[1].script[:args]).to eq(["--flag"])
+        expect(cask.artifacts[:installer].first.path).to eq(Pathname("/usr/bin/true"))
+        expect(cask.artifacts[:installer].first.args[:args]).to eq(["--flag"])
+        expect(cask.artifacts[:installer].to_a[1].path).to eq(Pathname("/usr/bin/false"))
+        expect(cask.artifacts[:installer].to_a[1].args[:args]).to eq(["--flag"])
       end
     end
 
@@ -482,7 +482,9 @@ describe Hbc::DSL, :cask do
       let(:token) { "with-installer-manual" }
 
       it "allows installer manual to be specified" do
-        expect(cask.artifacts[:installer].first.manual).to eq("Caffeine.app")
+        installer = cask.artifacts[:installer].first
+        expect(installer).to be_a(Hbc::Artifact::Installer::ManualInstaller)
+        expect(installer.path).to eq(cask.staged_path.join("Caffeine.app"))
       end
     end
   end
@@ -492,7 +494,7 @@ describe Hbc::DSL, :cask do
       let(:token) { "stage-only" }
 
       it "allows stage_only stanza to be specified" do
-        expect(cask.artifacts[:stage_only].first).to eq([true])
+        expect(cask.artifacts[:stage_only]).not_to be_empty
       end
     end
 
@@ -518,7 +520,7 @@ describe Hbc::DSL, :cask do
       let(:token) { "appdir-interpolation" }
 
       it "is allowed" do
-        expect(cask.artifacts[:binary].first).to eq(["#{Hbc.appdir}/some/path"])
+        expect(cask.artifacts[:binary].first.source).to eq(Hbc.appdir/"some/path")
       end
     end
 
@@ -531,7 +533,7 @@ describe Hbc::DSL, :cask do
           binary "#{appdir}/some/path"
         end
 
-        expect(cask.artifacts[:binary].first).to eq(["#{original_appdir}/some/path"])
+        expect(cask.artifacts[:binary].first.source).to eq(original_appdir/"some/path")
       ensure
         Hbc.appdir = original_appdir
       end