nixpkgs/pkgs/development/compilers/ghc/setup-hook.sh

# Create isolated package config
packages_db=$TMPDIR/.package.conf
cp @ghc@/lib/ghc-*/package.conf $packages_db
chmod u+w $packages_db

export GHC_PACKAGE_PATH=$packages_db

# Env hook to add packages to the package config
addLibToPackageConf () {
    local confFile=$1/nix-support/ghc-package.conf
    if test -f $confFile; then
        @ghc@/bin/ghc-pkg register $confFile
    fi
}

envHooks=(${envHooks[@]} addLibToPackageConf)
* adding ghc-6.8 even though it still segfaults on my machine (it's marked lowPrio for now, so it shouldn't break anything) svn path=/nixpkgs/trunk/; revision=9482 2007-10-19 15:24:29 +02:00			`# Create isolated package config`
* GHC setup hook: don't generate wrappers around ghc etc., instead set GHC_PACKAGE_PATH. * Let Cabal generate a package configuration file ($out/nix-support/ghc-package.conf) instead of a registration script. svn path=/nixpkgs/trunk/; revision=15127 2009-04-18 17:23:00 +02:00			`packages_db=$TMPDIR/.package.conf`
* Move the composition of Haskell packages out of all-packages.nix into haskell-packages.nix, which depends on an instance of GHC. This allows a consistent set of packages to be built with the same GHC. For instance, $ nix-build -A haskellPackages_ghc683.xmonad builds xmonad and all its dependencies with GHC 6.8.3, while $ nix-build -A haskellPackages_ghc6102.xmonad does the same with GHC 6.10.2. This is the same technique used with kernelPackages. It also means that we don't need things like "cabal682" and "cabal683" anymore. * The setup hook is now in a separate wrapper package so that we don't have to recompile all of GHC every time we want to make a small change. * cinelerra: this package appears to have an accidental dependency on the "X11" Haskell package. svn path=/nixpkgs/trunk/; revision=15125 2009-04-18 14:47:11 +02:00			`cp @ghc@/lib/ghc-*/package.conf $packages_db`
* GHC setup hook: don't generate wrappers around ghc etc., instead set GHC_PACKAGE_PATH. * Let Cabal generate a package configuration file ($out/nix-support/ghc-package.conf) instead of a registration script. svn path=/nixpkgs/trunk/; revision=15127 2009-04-18 17:23:00 +02:00			`chmod u+w $packages_db`
* adding ghc-6.8 even though it still segfaults on my machine (it's marked lowPrio for now, so it shouldn't break anything) svn path=/nixpkgs/trunk/; revision=9482 2007-10-19 15:24:29 +02:00
* GHC setup hook: don't generate wrappers around ghc etc., instead set GHC_PACKAGE_PATH. * Let Cabal generate a package configuration file ($out/nix-support/ghc-package.conf) instead of a registration script. svn path=/nixpkgs/trunk/; revision=15127 2009-04-18 17:23:00 +02:00			`export GHC_PACKAGE_PATH=$packages_db`
* adding ghc-6.8 even though it still segfaults on my machine (it's marked lowPrio for now, so it shouldn't break anything) svn path=/nixpkgs/trunk/; revision=9482 2007-10-19 15:24:29 +02:00
			`# Env hook to add packages to the package config`
* GHC setup hook: don't generate wrappers around ghc etc., instead set GHC_PACKAGE_PATH. * Let Cabal generate a package configuration file ($out/nix-support/ghc-package.conf) instead of a registration script. svn path=/nixpkgs/trunk/; revision=15127 2009-04-18 17:23:00 +02:00			`addLibToPackageConf () {`
			`local confFile=$1/nix-support/ghc-package.conf`
			`if test -f $confFile; then`
			`@ghc@/bin/ghc-pkg register $confFile`
* adding ghc-6.8 even though it still segfaults on my machine (it's marked lowPrio for now, so it shouldn't break anything) svn path=/nixpkgs/trunk/; revision=9482 2007-10-19 15:24:29 +02:00			`fi`
			`}`

			`envHooks=(${envHooks[@]} addLibToPackageConf)`