forked from mirrors/nixpkgs
52 lines
1.4 KiB
Nix
52 lines
1.4 KiB
Nix
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{rubyLibsWith, callPackage, lib, fetchurl, fetchgit}:
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let
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sourceInstantiators = {
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# Many ruby people use `git ls-files` to compose their gemspecs.
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git = (attrs: fetchgit { inherit (attrs) url rev sha256 leaveDotGit; });
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url = (attrs: fetchurl { inherit (attrs) url sha256; });
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};
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in
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{
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# Loads a set containing a ruby environment definition. The set's `gemset`
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# key is expected to contain a set of gems. A gemset definition looks like this:
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#
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# {
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# gemset = {
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# rack-test = {
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# version = "0.6.2";
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# src = {
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# type = "url";
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# url = "https://rubygems.org/downloads/rack-test-0.6.2.gem";
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# sha256 = "01mk715ab5qnqf6va8k3hjsvsmplrfqpz6g58qw4m3l8mim0p4ky";
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# };
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# dependencies = [ "rack" ];
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# };
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# };
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# }
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loadRubyEnv = expr: config:
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let
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expr' =
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if builtins.isAttrs expr
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then expr
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else import expr;
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gemset = lib.mapAttrs (name: attrs:
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attrs // {
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src = (sourceInstantiators."${attrs.src.type}") attrs.src;
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dontBuild = !(attrs.src.type == "git");
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}
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) expr'.gemset;
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ruby = config.ruby;
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rubyLibs = rubyLibsWith ruby;
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gems = rubyLibs.importGems gemset (config.gemOverrides or (gemset: {}));
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gemPath = map (drv: "${drv}") (
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builtins.filter lib.isDerivation (lib.attrValues gems)
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);
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in {
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inherit ruby gems gemPath;
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};
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}
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