Respond to review

Author: L-as

lib/call-cabal-project-to-nix.nix

@@ -126,6 +126,8 @@ let
   # access to the store is restricted.  If origSrc was already in the store
   # you can pass the project in as a string.
   rawCabalProject =
+    # Even if `cabal.project` doesn't exist, `cabal.project.local` is still used by cabal.
+    # We tested this: https://github.com/input-output-hk/haskell.nix/pull/1588
     if cabalProject == null && cabalProjectLocal == null
       then null
       else (

modules/hackage-project.nix

@@ -26,9 +26,6 @@ in {
     # Avoid readDir and readFile IFD functions looking for these files in the hackage source
     # `mkOverride 1100` means this will be used in preference to the mkOption default,
     # but a `mkDefault` can still override this.
-    cabalProject = lib.mkOverride 1100 ''
-      packages: .
-    '';
     cabalProjectLocal = lib.mkOverride 1100 null;
     cabalProjectFreeze = lib.mkOverride 1100 null;
     src =