From c659105ef8b2fe87822acf52f191a189f62e4d8a Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Thu, 4 Jun 2015 13:33:57 +0200
Subject: [PATCH] cabal2nix: get rid of the '-dirty' version suffix

The fetchgit builder performs some freak magic in the name of deterministic
hashes that screws up git's idea of a clean directory tree.
---
 pkgs/development/tools/haskell/cabal2nix/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/tools/haskell/cabal2nix/default.nix b/pkgs/development/tools/haskell/cabal2nix/default.nix
index 7c36390b91e..240353b6e75 100644
--- a/pkgs/development/tools/haskell/cabal2nix/default.nix
+++ b/pkgs/development/tools/haskell/cabal2nix/default.nix
@@ -31,7 +31,10 @@ mkDerivation rec {
     split transformers utf8-string
   ];
   buildTools = [ gitMinimal makeWrapper ];
-  preConfigure = "runhaskell $setupCompileFlags generate-cabal-file --release >cabal2nix.cabal";
+  preConfigure = ''
+    sed -i -e 's|, "--dirty"||' generate-cabal-file.hs
+    runhaskell $setupCompileFlags generate-cabal-file --release >cabal2nix.cabal
+  '';
   postInstall = ''
     exe=$out/libexec/${pname}-${version}/cabal2nix
     install -D $out/bin/cabal2nix $exe