uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/python-modules/wasmer/tests.nix

@@ -0,0 +1,25 @@
+{ buildPythonPackage
+, wasmer
+, pytestCheckHook
+, wasmer-compiler-cranelift
+, wasmer-compiler-llvm
+, wasmer-compiler-singlepass
+}:
+
+buildPythonPackage rec {
+  pname = "wasmer-tests";
+  inherit (wasmer) version;
+
+  src = wasmer.testsout;
+
+  dontBuild = true;
+  dontInstall = true;
+
+  checkInputs = [
+    pytestCheckHook
+    wasmer
+    wasmer-compiler-cranelift
+    wasmer-compiler-llvm
+    wasmer-compiler-singlepass
+  ];
+}