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nixpkgs/pkgs/development/compilers/ghcjs-ng/configured-ghcjs-src.nix

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Nix

{ perl
, autoconf
, automake
, python3
, gcc
, cabal-install
, runCommand
, lib
, stdenv
, ghc
, happy
, alex
, ghcjsSrc
}:
runCommand "configured-ghcjs-src" {
buildInputs = [
perl
autoconf
automake
python3
ghc
happy
alex
cabal-install
] ++ lib.optionals stdenv.isDarwin [
gcc # https://github.com/ghcjs/ghcjs/issues/663
];
inherit ghcjsSrc;
} ''
export HOME=$(pwd)
mkdir $HOME/.cabal
touch $HOME/.cabal/config
cp -r "$ghcjsSrc" "$out"
chmod -R +w "$out"
cd "$out"
# TODO: Find a better way to avoid impure version numbers
sed -i 's/RELEASE=NO/RELEASE=YES/' ghc/configure.ac
# TODO: How to actually fix this?
# Seems to work fine and produce the right files.
touch ghc/includes/ghcautoconf.h
patchShebangs .
./utils/makePackages.sh copy
''