darwin.xattr: add setuptools

+1
+1
pkgs/os-specific/darwin/xattr/default.nix
··· 22 nativeBuildInputs = [ 23 ed 24 unifdef 25 ]; 26 27 makeFlags = [
··· 22 nativeBuildInputs = [ 23 ed 24 unifdef 25 + python.pkgs.setuptools 26 ]; 27 28 makeFlags = [