Merge pull request #811 from the-kenny/erlang-elixir

Update erlang to R16B1, add elixir and rebar

pkgs/development/tools/build-managers/rebar/default.nix

@@ -0,0 +1,36 @@
+{ stdenv, fetchurl, erlang }:
+
+stdenv.mkDerivation {
+  name = "rebar-2.1.0-pre";
+
+  src = fetchurl {
+    url = "https://github.com/basho/rebar/archive/2.1.0-pre.tar.gz";
+    sha256 = "0dsbk9ssvk1hx9275900dg4bz79kpwcid4gsz09ziiwzv0jjbrjn";
+  };
+
+  buildInputs = [ erlang ];
+
+  buildPhase = "escript bootstrap";
+  installPhase = ''
+    mkdir -p $out/bin
+    cp rebar $out/bin/rebar
+  '';
+
+  meta = {
+    homepage = "https://github.com/rebar/rebar";
+    description = "Erlang build tool that makes it easy to compile and test Erlang applications, port drivers and releases.";
+
+    longDescription = ''
+      rebar is a self-contained Erlang script, so it's easy to
+      distribute or even embed directly in a project. Where possible,
+      rebar uses standard Erlang/OTP conventions for project
+      structures, thus minimizing the amount of build configuration
+      work. rebar also provides dependency management, enabling
+      application writers to easily re-use common libraries from a
+      variety of locations (git, hg, etc).
+      '';
+
+    platforms = stdenv.lib.platforms.linux;
+    maintainers = [ stdenv.lib.maintainers.the-kenny ];
+  };
+}