nixpkgs/pkgs/development/tools/parsing/alex/default.nix

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{stdenv, fetchurl, ghc, perl}:
stdenv.mkDerivation {
name = "alex-2.1.0";
src = fetchurl {
url = http://www.haskell.org/alex/dist/2.1.0/alex-2.1.0.tar.gz;
sha1 = "37599b7be5249d639b3a5a3fdc61907dc4dad660";
};
buildInputs = [ghc perl];
configurePhase = "
ghc --make Setup.lhs
./Setup configure --prefix=\"\${out}\"
";
buildPhase = "
./Setup build
";
installPhase = "
./Setup install
";
}