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require 'formula'
class Ghc <Formula
homepage 'http://haskell.org/ghc/'
url "http://darcs.haskell.org/download/dist/6.12.3/GHC-6.12.3-i386.pkg"
version '6.12.3'
md5 '58399e3af68f50a23a847bdfe3de5aca'
# Avoid stripping the Haskell binaries & libraries.
# See: http://hackage.haskell.org/trac/ghc/ticket/2458
skip_clean ['bin', 'lib']
def replace_all foo, bar
# Find all text files containing foo and replace it with bar
files = `/usr/bin/grep -lsIR #{foo} .`.split
inreplace files, foo, bar
end
def install
short_version = version.split('.').first(2).join('')
# Extract files from .pax.gz
system '/bin/pax -f ghc.pkg/Payload -p p -rz'
cd "GHC.framework/Versions/#{short_version}/usr"
# Fix paths
replace_all "/Library/Frameworks/GHC.framework/Versions/#{short_version}/usr/lib/ghc-#{version}", "#{lib}/ghc"
replace_all "/Library/Frameworks/GHC.framework/Versions/#{short_version}/usr", prefix
prefix.install ['bin', 'share']
# Remove version from lib folder
lib.install "lib/ghc-#{version}" => 'ghc'
# Fix ghc-asm Perl reference
inreplace "#{lib}/ghc/ghc-asm", "#!/opt/local/bin/perl", "#!/usr/bin/env perl"
# Regenerate GHC package cache
rm "#{lib}/ghc/package.conf.d/package.cache"
system "#{bin}/ghc-pkg", 'recache', '--package-conf', "#{lib}/ghc/package.conf.d"
end
end
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