Add Scala dotty, at version 0.4.0-RC1

pkgs/development/compilers/scala/dotty.nix

@@ -0,0 +1,43 @@
+{ stdenv, fetchurl, makeWrapper, jre }:
+
+stdenv.mkDerivation rec {
+  version = "0.4.0-RC1";
+  name = "dotty-${version}";
+
+  src = fetchurl {
+    url = "https://github.com/lampepfl/dotty/releases/download/${version}/${name}.tar.gz";
+    sha256 = "1d1ab08b85bd6898ce6273fa50818de0d314fc6e5377fb6ee05494827043321b";
+  };
+
+  propagatedBuildInputs = [ jre ] ;
+  buildInputs = [ makeWrapper ] ;
+
+  installPhase = ''
+    mkdir -p $out
+    mv * $out
+
+    for p in $out/bin/* ; do
+      file=$(basename $p)
+
+      # no need to wrap common
+      if [[ "$file" = "common" ]] ; then
+        continue
+      fi
+
+      wrapProgram $p --set JAVA_HOME ${jre}
+    done    
+  '';
+
+  meta = {
+    description = "Research platform for new language concepts and compiler technologies for Scala.";
+    longDescription = ''
+       Dotty is a platform to try out new language concepts and compiler technologies for Scala.
+       The focus is mainly on simplification. We remove extraneous syntax (e.g. no XML literals),
+       and try to boil down Scala’s types into a smaller set of more fundamental constructs.
+       The theory behind these constructs is researched in DOT, a calculus for dependent object types.
+    '';
+    homepage = http://dotty.epfl.ch/;
+    license = stdenv.lib.licenses.bsd3;
+    platforms = stdenv.lib.platforms.all;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -6264,6 +6264,7 @@ with pkgs;
   scala_2_10 = callPackage ../development/compilers/scala/2.10.nix { };
   scala_2_11 = callPackage ../development/compilers/scala/2.11.nix { };
   scala_2_12 = callPackage ../development/compilers/scala { jre = jre8; };
+  scala_dotty = callPackage ../development/compilers/scala/dotty.nix { jre = jre8;};
   scala = scala_2_12;
 
   scalafmt = callPackage ../development/tools/scalafmt { };