nixpkgs/pkgs/development/interpreters/jruby/default.nix

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{ stdenv, fetchurl, makeWrapper, jre }:
stdenv.mkDerivation {
name = "jruby-1.6.5.1";
src = fetchurl {
url = http://jruby.org.s3.amazonaws.com/downloads/1.6.5.1/jruby-bin-1.6.5.1.tar.gz;
sha256 = "1j0iv1q950lyir9vqfgg2533f1q28jaz7vnxqswsaix1mjhm29qd";
};
buildInputs = [ makeWrapper ];
installPhase = ''
mkdir -pv $out
mv * $out
rm $out/bin/*.{bat,dll,exe,sh}
mv $out/README $out/docs
for i in $out/bin/*; do
wrapProgram $i \
--set JAVA_HOME ${jre}
done
'';
meta = {
description = "Ruby interpreter written in Java";
homepage = http://jruby.org/;
license = "CPL-1.0 GPL-2 LGPL-2.1"; # one of those
};
}