Homebrewed Mercurial on Snow Leopard with Xcode 4.2 only.

gistfile1.txt

[paxswill@apollo:~]$ which gcc-4.2
[paxswill@apollo:~]$ brew install -vvd mercurial 
==> Downloading http://mercurial.selenic.com/release/mercurial-2.1.2.tar.gz
Already downloaded: /Users/paxswill/Library/Caches/Homebrew/mercurial-2.1.2.tar.gz
/usr/bin/tar xf /Users/paxswill/Library/Caches/Homebrew/mercurial-2.1.2.tar.gz
==> make PREFIX=/usr/local/Cellar/mercurial/2.1.2 build
make PREFIX=/usr/local/Cellar/mercurial/2.1.2 build
python setup.py  build
running build
running build_mo
warning: hgbuildmo: could not find msgfmt executable, no translations will be built
running build_ext
building 'mercurial.base85' extension
creating build
creating build/temp.macosx-10.6-universal-2.6
creating build/temp.macosx-10.6-universal-2.6/mercurial
/usr/bin/llvm-gcc -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -Os -w -pipe -pipe -I/System/Library/Frameworks/Python.framework/Versions/2.6/include/python2.6 -c mercurial/base85.c -o build/temp.macosx-10.6-universal-2.6/mercurial/base85.o
creating build/lib.macosx-10.6-universal-2.6
creating build/lib.macosx-10.6-universal-2.6/mercurial
gcc-4.2 -Wl,-F. -bundle -undefined dynamic_lookup -Os -w -pipe build/temp.macosx-10.6-universal-2.6/mercurial/base85.o -o build/lib.macosx-10.6-universal-2.6/mercurial/base85.so
unable to execute gcc-4.2: No such file or directory
error: command 'gcc-4.2' failed with exit status 1
make: *** [build] Error 1
Error: #<BuildError: Failed executing: make PREFIX=/usr/local/Cellar/mercurial/2.1.2 build>
/usr/local/Library/Homebrew/formula.rb:437:in `system'
/usr/local/Library/Formula/mercurial.rb:32:in `install'
/usr/local/Library/Homebrew/build.rb:88:in `install'
/usr/local/Library/Homebrew/formula.rb:190:in `brew'
/usr/local/Library/Homebrew/formula.rb:517:in `stage'
/usr/local/Library/Homebrew/extend/fileutils.rb:22:in `mktemp'
/usr/local/Library/Homebrew/formula.rb:513:in `stage'
/usr/local/Library/Homebrew/formula.rb:185:in `brew'
/usr/local/Library/Homebrew/build.rb:67:in `install'
/usr/local/Library/Homebrew/build.rb:30
/usr/local/Library/Formula/mercurial.rb:54
==> Rescuing build...
When you exit this shell Homebrew will attempt to finalise the installation.
If nothing is installed or the shell exits with a non-zero error code,
Homebrew will abort. The installation prefix is:
/usr/local/Cellar/mercurial/2.1.2