chruby package: a utlity for switching the current ruby version.

pkgs/development/tools/misc/chruby/default.nix

@@ -0,0 +1,28 @@
+{ stdenv, lib, fetchFromGitHub }:
+
+stdenv.mkDerivation rec {
+  name = "chruby";
+
+  src = fetchFromGitHub {
+    owner = "postmodern";
+    repo = "chruby";
+    rev = "d5ae98410311aec1358d4cfcc1e3ec02de593c3b";
+    sha256 = "1iq9milnnj3189yw02hkly2pnnh4g0vn2fxq6dfx90kldjwpwxq5";
+  };
+
+  phases = [ "unpackPhase" "installPhase" "fixupPhase" ];
+
+  installPhase = ''
+    mkdir $out
+    cp -r bin $out
+    cp -r share $out
+  '';
+
+  meta = with lib; {
+    description = "Changes the current Ruby";
+    homepage = https://github.com/postmodern/chruby;
+    license = licenses.mit;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ cstrahan ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -4267,6 +4267,8 @@ let
 
   chrpath = callPackage ../development/tools/misc/chrpath { };
 
+  chruby = callPackage ../development/tools/misc/chruby { };
+
   "cl-launch" = callPackage ../development/tools/misc/cl-launch {};
 
   complexity = callPackage ../development/tools/misc/complexity { };