From 4001a680cc9f644f3400c8a8aaddc703bd322935 Mon Sep 17 00:00:00 2001
From: Daniel Goertzen <daniel.goertzen@gmail.com>
Date: Thu, 21 Jun 2018 09:14:20 -0500
Subject: [PATCH] erlangR21: init at 21.0

---
 pkgs/development/interpreters/erlang/R21.nix | 10 ++++++++++
 pkgs/top-level/all-packages.nix              |  2 +-
 pkgs/top-level/beam-packages.nix             | 10 ++++++++++
 3 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 pkgs/development/interpreters/erlang/R21.nix

diff --git a/pkgs/development/interpreters/erlang/R21.nix b/pkgs/development/interpreters/erlang/R21.nix
new file mode 100644
index 00000000000..de00ebdf2cb
--- /dev/null
+++ b/pkgs/development/interpreters/erlang/R21.nix
@@ -0,0 +1,10 @@
+{ mkDerivation, fetchurl }:
+
+mkDerivation rec {
+  version = "21.0";
+  sha256 = "0khprgawmbdpn9b8jw2kksmvs6b45mibpjralsc0ggxym1397vm8";
+
+  prePatch = ''
+    substituteInPlace configure.in --replace '`sw_vers -productVersion`' '10.10'
+  '';
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f82853a751a..effc4004134 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7175,7 +7175,7 @@ with pkgs;
   beam = callPackage ./beam-packages.nix { };
 
   inherit (beam.interpreters)
-    erlang erlangR18 erlangR19 erlangR20
+    erlang erlangR18 erlangR19 erlangR20 erlangR21
     erlang_odbc erlang_javac erlang_odbc_javac erlang_nox erlang_basho_R16B02
     elixir elixir_1_6 elixir_1_5 elixir_1_4 elixir_1_3
     lfe lfe_1_2;
diff --git a/pkgs/top-level/beam-packages.nix b/pkgs/top-level/beam-packages.nix
index 765f69c1b14..8f8caf755ed 100644
--- a/pkgs/top-level/beam-packages.nix
+++ b/pkgs/top-level/beam-packages.nix
@@ -41,6 +41,15 @@ rec {
       javacSupport = true; odbcSupport = true;
     };
     erlangR20_nox = erlangR20.override { wxSupport = false; };
+    erlangR21 = lib.callErlang ../development/interpreters/erlang/R21.nix {
+      wxGTK = wxGTK30;
+    };
+    erlangR21_odbc = erlangR21.override { odbcSupport = true; };
+    erlangR21_javac = erlangR21.override { javacSupport = true; };
+    erlangR21_odbc_javac = erlangR21.override {
+      javacSupport = true; odbcSupport = true;
+    };
+    erlangR21_nox = erlangR21.override { wxSupport = false; };
 
     # Basho fork, using custom builder.
     erlang_basho_R16B02 = lib.callErlang ../development/interpreters/erlang/R16B02-basho.nix {
@@ -69,6 +78,7 @@ rec {
     erlangR18 = packagesWith interpreters.erlangR18;
     erlangR19 = packagesWith interpreters.erlangR19;
     erlangR20 = packagesWith interpreters.erlangR20;
+    erlangR21 = packagesWith interpreters.erlangR21;
 
   };
 }