Improve homebrew/{core,cask} autotapping.

Don't automatically tap these when running a developer command that's
not using the API.

Fixes #14606

Library/Homebrew/.rubocop.yml

@@ -41,7 +41,7 @@ Metrics/PerceivedComplexity:
 Metrics/MethodLength:
   Max: 232
 Metrics/ModuleLength:
-  Max: 473
+  Max: 475
   Exclude:
     # TODO: extract more of the bottling logic
     - "dev-cmd/bottle.rb"

Library/Homebrew/brew.sh

@@ -782,6 +782,8 @@ if [[ -f "${HOMEBREW_LIBRARY}/Homebrew/dev-cmd/${HOMEBREW_COMMAND}.sh" ]] ||
 then
   export HOMEBREW_DEVELOPER_COMMAND="1"
 
+  if [[ -z "${HOMEBREW_NO_INSTALL_FROM_API}" ]]
+  then
     NO_INSTALL_FROM_API_COMMANDS=(
       audit
       bottle
@@ -805,10 +807,12 @@ then
     if check-array-membership "${HOMEBREW_COMMAND}" "${NO_INSTALL_FROM_API_COMMANDS[@]}"
     then
       export HOMEBREW_NO_INSTALL_FROM_API=1
+      export HOMEBREW_AUTOMATICALLY_SET_NO_INSTALL_FROM_API=1
     fi
 
     unset NO_INSTALL_FROM_API_COMMANDS
   fi
+fi
 
 if [[ -n "${HOMEBREW_DEVELOPER_COMMAND}" && -z "${HOMEBREW_DEVELOPER}" ]]
 then

Library/Homebrew/cmd/update-report.rb

@@ -271,6 +271,7 @@ module Homebrew
   def install_core_tap_if_necessary
     return if ENV["HOMEBREW_UPDATE_TEST"]
     return if Homebrew::EnvConfig.install_from_api?
+    return if Homebrew::EnvConfig.automatically_set_no_install_from_api?
 
     core_tap = CoreTap.instance
     return if core_tap.installed?

Library/Homebrew/env_config.rb

@@ -489,6 +489,11 @@ module Homebrew
       cask_opts.include?("--require-sha")
     end
 
+    sig { returns(T::Boolean) }
+    def automatically_set_no_install_from_api?
+      ENV["HOMEBREW_AUTOMATICALLY_SET_NO_INSTALL_FROM_API"].present?
+    end
+
     sig { returns(T::Boolean) }
     def install_from_api?
       return false if OS.unsupported_configuration?

Library/Homebrew/extend/os/mac/tap.rb

@@ -5,6 +5,7 @@ class Tap
   def self.install_default_cask_tap_if_necessary(force: false)
     return false if default_cask_tap.installed?
     return false if Homebrew::EnvConfig.install_from_api?
+    return false if Homebrew::EnvConfig.automatically_set_no_install_from_api?
     return false if !force && Tap.untapped_official_taps.include?(default_cask_tap.name)
 
     default_cask_tap.install

Library/Homebrew/tap.rb

@@ -796,6 +796,7 @@ class CoreTap < Tap
   def self.ensure_installed!
     return if instance.installed?
     return if Homebrew::EnvConfig.install_from_api?
+    return if Homebrew::EnvConfig.automatically_set_no_install_from_api?
 
     # Tests override homebrew-core locations and we don't want to auto-tap in them.
     return if ENV["HOMEBREW_TESTS"]