arion: Fix name-setting patch

"Cabal"'s pname must be original for edited cabal file fetching
to work.

pkgs/applications/virtualization/arion/default.nix

@@ -16,11 +16,16 @@ let
        - make it self-contained by including docker-compose
    */
   arion =
-    justStaticExecutables (
+    (justStaticExecutables (
       overrideCabal
         cabalOverrides
         arion-compose
-      );
+      )
+    ).overrideAttrs (o: {
+      # Patch away the arion-compose name. Unlike the Haskell library, the program
+      # is called arion (arion was already taken on hackage).
+      pname = "arion";
+    });
 
   inherit (haskell.lib.compose) justStaticExecutables overrideCabal;
 
@@ -31,9 +36,6 @@ let
     passthru = (o.passthru or {}) // {
       inherit eval build;
     };
-    # Patch away the arion-compose name. Unlike the Haskell library, the program
-    # is called arion (arion was already taken on hackage).
-    pname = "arion";
     src = arion-compose.src;
 
     # PYTHONPATH