mruby: init at 1.4.1

pkgs/development/compilers/mruby/default.nix

@@ -0,0 +1,28 @@
+{ stdenv, ruby, bison, fetchFromGitHub }:
+
+stdenv.mkDerivation rec {
+  name = "mruby-${version}";
+  version = "1.4.1";
+
+  src = fetchFromGitHub {
+    owner   = "mruby";
+    repo    = "mruby";
+    rev     = version;
+    sha256  = "0pw72acbqgs4n1qa297nnja23v9hxz9g7190yfx9kwm7mgbllmww";
+  };
+
+  nativeBuildInputs = [ ruby bison ];
+
+  installPhase = ''
+    mkdir $out
+    cp -R build/host/{bin,lib} $out
+  '';
+
+  meta = with stdenv.lib; {
+    description = "An embeddable implementation of the Ruby language";
+    homepage = https://mruby.org;
+    maintainers = [ maintainers.nicknovitski ];
+    license = licenses.mit;
+    platforms = platforms.unix;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -7638,6 +7638,8 @@ with pkgs;
 
   ruby = ruby_2_4;
 
+  mruby = callPackage ../development/compilers/mruby { };
+
   scsh = callPackage ../development/interpreters/scsh { };
 
   scheme48 = callPackage ../development/interpreters/scheme48 { };