This was worded in a confusing way, and made an assumption about future
OS X versions that we don't know to be true.
Also, it's probably wrong to state that the CLT location is dependent on
the OS X version; surely there will be a newer CLT for 10.8 that gets
installed in the same location as on 10.9. But we don't know any better
yet.
- The Library/ENV/4.3/xcrun shim now respects
ENV['DEVELOPER_DIR'] instead assuming the location
of /Applications/Xcode.app/Contents/Developer.
- The env var DEVELOPER_DIR is set if it is not
already. So, during superenv this var is always set
and we no longer have to care about people with unset
or wrongly set xcode-select stuff. This has been
a major PITA in the past.
- determine_developer_dir (which is used to set
the DEVELOPER_DIR var) now uses MacOS::Xcode.prefix
which is proven and very capable and uses splotlight
correctly.
- Replace (and remove) MacSystem.xcode43_developer_dir
with Xcode.prefix
ClosesHomebrew/homebrew#18618
