Specify types of sha256map and configureArgs

Author: L-as

modules/cabal-project.nix

@@ -79,7 +79,7 @@ in {
       description = "cabal-install to use when running `cabal configure`";
     };
     configureArgs = mkOption {
-      type = nullOr str;
+      type = nullOr (separatedString " ");
       default = "";
       description = ''
         Extra arguments to pass to `cabal v2-configure`.
@@ -90,7 +90,7 @@ in {
       '';
     };
     sha256map = mkOption {
-      type = nullOr unspecified;
+      type = nullOr (attrsOf (attrsOf str));
       default = null;
       description = ''
         An alternative to adding `--sha256` comments into the