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-rw-r--r--pkgs/development/haskell-modules/default.nix9
1 files changed, 1 insertions, 8 deletions
diff --git a/pkgs/development/haskell-modules/default.nix b/pkgs/development/haskell-modules/default.nix
index 7205f777bcf2..df17c769ea2d 100644
--- a/pkgs/development/haskell-modules/default.nix
+++ b/pkgs/development/haskell-modules/default.nix
@@ -84,14 +84,7 @@ let
         callHackage = name: version: self.callPackage (hackage2nix name version);
 
         # Creates a Haskell package from a source package by calling cabal2nix on the source.
-        callCabal2nix = name: src: args:
-          let
-            # Filter out files other than the cabal file. This ensures
-            # that we don't create new derivations even when the cabal
-            # file hasn't changed.
-            justCabal = builtins.filterSource (path: type: pkgs.lib.hasSuffix ".cabal" path) src;
-            drv = self.callPackage (haskellSrc2nix { inherit name; src = justCabal; }) args;
-          in overrideCabal drv (drv': { inherit src; }); # Restore the desired src.
+        callCabal2nix = name: src: self.callPackage (haskellSrc2nix { inherit src name; });
 
         ghcWithPackages = selectFrom: withPackages (selectFrom self);