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nixpkgs/pkgs/development/interpreters/jruby/default.nix
Farid Zakaria 8da7bd63ca jruby: fix shebang for binaries in JRuby
There are a variety of additional scripts that are included with the
JRuby installation that use JRuby itself.

For instance the `bin/gem` had the following contents:

```bash
❯ cat /nix/store/kglkqf56ii83yl6yrgcaj5r3s9m2fzr0-jruby-9.2.13.0/bin/gem

load File.join(File.dirname(__FILE__), 'jgem')
```

This is clearly wrong. Patchshebangs was not picking up the fix as part
of stdenv because the patch is not a build input but the final output
itself.

We have to rely on substituteInPlace so that we get the correct version.

```bash
❯ cat /nix/store/k4fnrn0dcsh2wzw81217r0ywsspb468f-jruby-9.2.13.0/bin/gem

```
2020-09-24 17:57:17 -07:00

68 lines
1.7 KiB
Nix

{ stdenv, callPackage, fetchurl, makeWrapper, jre }:
let
# The version number here is whatever is reported by the RUBY_VERSION string
rubyVersion = callPackage ../ruby/ruby-version.nix {} "2" "5" "7" "";
jruby = stdenv.mkDerivation rec {
pname = "jruby";
version = "9.2.13.0";
src = fetchurl {
url = "https://s3.amazonaws.com/jruby.org/downloads/${version}/jruby-bin-${version}.tar.gz";
sha256 = "0n5glz6xm3skrfihzn3g5awdxpjsqn2k8k46gv449rk2l50w5a3k";
};
buildInputs = [ makeWrapper ];
installPhase = ''
mkdir -pv $out/docs
mv * $out
rm $out/bin/*.{bat,dll,exe,sh}
mv $out/COPYING $out/LICENSE* $out/docs
for i in $out/bin/jruby{,.bash}; do
wrapProgram $i \
--set JAVA_HOME ${jre}
done
ln -s $out/bin/jruby $out/bin/ruby
# Bundler tries to create this directory
mkdir -pv $out/${passthru.gemPath}
mkdir -p $out/nix-support
cat > $out/nix-support/setup-hook <<EOF
addGemPath() {
addToSearchPath GEM_PATH \$1/${passthru.gemPath}
}
addEnvHooks "$hostOffset" addGemPath
EOF
'';
postFixup = ''
PATH=$out/bin:$PATH patchShebangs $out/bin
'';
passthru = rec {
rubyEngine = "jruby";
gemPath = "lib/${rubyEngine}/gems/${rubyVersion.libDir}";
libPath = "lib/${rubyEngine}/${rubyVersion.libDir}";
};
meta = with stdenv.lib; {
description = "Ruby interpreter written in Java";
homepage = "http://jruby.org/";
license = with licenses; [ cpl10 gpl2 lgpl21 ];
platforms = platforms.unix;
maintainers = [ maintainers.fzakaria ];
};
};
in jruby.overrideAttrs (oldAttrs: {
passthru = oldAttrs.passthru // {
devEnv = callPackage ../ruby/dev.nix {
ruby = jruby;
};
};
})