Improve compatibility for old formula

Allow compatibility to be disabled with --no-compat or HOMEBREW_NO_COMPAT environment variable.

2 files changed, 85 insertions, 0 deletions

diff --git a/Library/Homebrew/compat/brewkit.rb b/Library/Homebrew/compat/brewkit.rb
new file mode 100644
index 000000000..59a0bf150
--- /dev/null
+++ b/Library/Homebrew/compat/brewkit.rb
@@ -0,0 +1,3 @@
+# here so that formula from the repo that are very old can still be installed
+
+require 'formula'
diff --git a/Library/Homebrew/compat/compatibility.rb b/Library/Homebrew/compat/compatibility.rb
new file mode 100644
index 000000000..ac94feff8
--- /dev/null
+++ b/Library/Homebrew/compat/compatibility.rb
@@ -0,0 +1,82 @@
+## Compatibility layer introduced in 0.8 (refactor)
+
+# maybe never used by anyone, but alas it must continue to exist
+def versions_of(keg_name)
+  `/bin/ls #{HOMEBREW_CELLAR}/#{keg_name}`.collect { |version| version.strip }.reverse
+end
+
+def dump_config
+  require 'cmd/--config'
+  Homebrew.__config
+end
+
+def dump_build_env env
+  require 'cmd/--env'
+  Homebrew.dump_build_env env
+end
+
+def default_cc
+  MacOS.default_cc
+end
+
+def gcc_42_build
+  MacOS.gcc_42_build_version
+end
+
+alias :gcc_build :gcc_42_build
+
+def gcc_40_build
+  MacOS.gcc_40_build_version
+end
+
+def llvm_build
+  MacOS.llvm_build_version
+end
+
+def x11_installed?
+  MacOS.x11_installed?
+end
+
+def macports_or_fink_installed?
+  MacOS.macports_or_fink_installed?
+end
+
+def outdated_brews
+  require 'cmd/outdated'
+  Homebrew.outdated_brews
+end
+
+def search_brews text
+  require 'cmd/search'
+  Homebrew.search_brews text
+end
+
+def snow_leopard_64?
+  MacOS.prefer_64_bit?
+end
+
+class Formula
+  # in compatability because the naming is somewhat confusing
+  def self.resolve_alias name
+    opoo 'Formula.resolve_alias is deprecated and will eventually be removed'
+
+    # Don't resolve paths or URLs
+    return name if name.include?("/")
+
+    aka = HOMEBREW_REPOSITORY+"Library/Aliases"+name
+    if aka.file?
+      aka.realpath.basename('.rb').to_s
+    else
+      name
+    end
+  end
+
+  # This used to be called in "def install", but should now be used
+  # up in the DSL section.
+  def fails_with_llvm msg=nil, data=nil
+    handle_llvm_failure FailsWithLLVM.new(msg, data)
+  end
+end
+
+class UnidentifiedFormula < Formula
+end