Apply the same fallback to codesign_allocate

haskell/private/cc_wrapper.py.tpl

@@ -934,13 +934,15 @@ def darwin_rewrite_load_commands(rewrites, output):
         # Fall back to /usr/bin/codesign if the `CODESIGN` executable is not available
         # (this might happen when using a default cc toolchain from a nix shell on Darwin instead
         #  of using a nixpkgs_cc_configure'd toolchain).
+        # Do the same for codesign_allocate.
         codesign = CODESIGN if os.access(CODESIGN, os.X_OK) else "/usr/bin/codesign"
+        codesign_allocate = CODESIGN_ALLOCATE if os.access(CODESIGN_ALLOCATE, os.X_OK) else "/usr/bin/codesign_allocate"
         # This is necessary on MacOS Monterey on M1.
         # The moving back and forth is necessary because the OS caches the signature.
         # See this note from nixpkgs for reference:
         # https://github.com/NixOS/nixpkgs/blob/5855ff74f511423e3e2646248598b3ffff229223/pkgs/os-specific/darwin/signing-utils/utils.sh#L1-L6
         os.rename(output, f"{output}.resign")
-        subprocess.check_call([codesign] + ["-f", "-s", "-"] + [f"{output}.resign"], env = {'CODESIGN_ALLOCATE': CODESIGN_ALLOCATE})
+        subprocess.check_call([codesign] + ["-f", "-s", "-"] + [f"{output}.resign"], env = {'CODESIGN_ALLOCATE': codesign_allocate})
         os.rename(f"{output}.resign", output)