haskell: use postPatch instead of patchPhase where possible

Closes https://github.com/NixOS/nixpkgs/pull/9297.

1 files changed, 2 insertions, 2 deletions

diff --git a/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix b/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
index cbc9ed32f76..2fd9b9c0fb0 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
@@ -90,10 +90,10 @@ self: super: {
 
   # Setup: At least the following dependencies are missing: base <4.8
   hspec-expectations = overrideCabal super.hspec-expectations (drv: {
-    patchPhase = "sed -i -e 's|base < 4.8|base|' hspec-expectations.cabal";
+    postPatch = "sed -i -e 's|base < 4.8|base|' hspec-expectations.cabal";
   });
   utf8-string = overrideCabal super.utf8-string (drv: {
-    patchPhase = "sed -i -e 's|base >= 3 && < 4.8|base|' utf8-string.cabal";
+    postPatch = "sed -i -e 's|base >= 3 && < 4.8|base|' utf8-string.cabal";
   });
   pointfree = doJailbreak super.pointfree;