From f0ebdd42968f81cff4e156ff3f3cc4692a6ec8ee Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Mon, 16 Dec 2013 21:21:31 +0100
Subject: [PATCH] pkgs/build-support/cabal: add 'buildTarget' attribute to
 allow passing flags to "./Setup build"

---
 pkgs/build-support/cabal/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/build-support/cabal/default.nix b/pkgs/build-support/cabal/default.nix
index 8984feac167..cfa6175744f 100644
--- a/pkgs/build-support/cabal/default.nix
+++ b/pkgs/build-support/cabal/default.nix
@@ -107,6 +107,9 @@ assert !enableStaticLibraries -> versionOlder "7.7" ghc.version;
             # build-depends Cabal field
             buildDepends = [];
 
+            # target(s) passed to the cabal build phase as an argument
+            buildTarget = "";
+
             # build-depends Cabal fields stated in test-suite stanzas
             testDepends = [];
 
@@ -201,7 +204,7 @@ assert !enableStaticLibraries -> versionOlder "7.7" ghc.version;
             buildPhase = ''
               eval "$preBuild"
 
-              ./Setup build
+              ./Setup build ${self.buildTarget}
 
               export GHC_PACKAGE_PATH=$(${ghc.GHCPackages})
               test -n "$noHaddock" || ./Setup haddock