diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 84df4d1f0c4d..f518d5a043f9 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -984,4 +984,9 @@ self: super: {
     };
   }).override { language-c = self.language-c_0_7_0; };
 
+  # Needs pginit to function and pgrep to verify.
+  tmp-postgres = overrideCabal super.tmp-postgres (drv: {
+    libraryToolDepends = drv.libraryToolDepends or [] ++ [pkgs.postgresql];
+    testToolDepends = drv.testToolDepends or [] ++ [pkgs.procps];
+  });
 }