1 files changed, 10 insertions, 9 deletions
diff --git a/default.nix b/default.nix
index 0545c15..cb6c507 100644
--- a/default.nix
+++ b/default.nix
@@ -1,18 +1,19 @@
-{ pkgs ? import (import ./nix/sources.nix).nixpkgs { }
+{ pkgs ? import sources.nixpkgs {
+    overlays = [
+      (import ./pkgs)
+    ];
+  }
+, sources ? import ./nix/sources.nix
 }:
 let
-  haskellPackages = pkgs.haskellPackages.override
-    {
-      overrides = self: super: {
-        sh = self.callCabal2nix "sh" ./. { };
-      };
-    };
+  inherit (pkgs) haskellPackages;
 in
 {
+  inherit (haskellPackages) sh;
   shell = haskellPackages.shellFor {
-    packages = (_: [
+    packages = _: [
       haskellPackages.sh
-    ]);
+    ];
     buildInputs = [
       pkgs.cabal-install
       pkgs.niv