update nix/testenv.nix

Author: songgaoye

nix/testenv.nix

@@ -6,7 +6,7 @@
 poetry2nix.mkPoetryEnv {
   python = python311;
   projectDir = ../integration_tests;
-  preferWheels = true;
+  preferWheels = false;
   overrides = poetry2nix.overrides.withDefaults (
     self: super:
     let
@@ -33,5 +33,9 @@ poetry2nix.mkPoetryEnv {
         nativeBuildInputs = (old.nativeBuildInputs or [ ]) ++ map (a: self.${a}) systems;
       })
     ) buildSystems
+    // {
+      # 强制使用 nixpkgs 中预构建的 attrs
+      attrs = python311.pkgs.attrs;
+    }
   );
 }