From 5c3c688f7bc16cdcf57f7c0a4ebb61b369088ef1 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Tue, 8 Apr 2014 13:17:40 +0200
Subject: [PATCH] Elm: fix build by ignoring the build instructions provided by
 upstream

Re-apply the build fix from <https://github.com/NixOS/nixpkgs/issues/2089>,
because apparently the underlying issue has not been fixed.

According to <https://github.com/elm-lang/Elm/issues/384>, Elm's release
archive comes with a Setup.hs that cannot compile an Elm release. Duh!
Replacing the custom Setup.hs file with a dummy version fixes this issue.
---
 pkgs/development/compilers/elm/elm.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/compilers/elm/elm.nix b/pkgs/development/compilers/elm/elm.nix
index 3daa1b507b7..622f182e8c5 100644
--- a/pkgs/development/compilers/elm/elm.nix
+++ b/pkgs/development/compilers/elm/elm.nix
@@ -24,6 +24,10 @@ cabal.mkDerivation (self: {
     unorderedContainers yaml
   ];
   doCheck = false;
+  preConfigure = ''
+    rm -f Setup.hs
+    echo -e "import Distribution.Simple\nmain=defaultMain\n" > Setup.hs
+  '';
   meta = {
     homepage = "http://elm-lang.org";
     description = "The Elm language module";