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/pytest-celery/default.nix

@@ -0,0 +1,31 @@
+{ lib, buildPythonPackage, fetchFromGitHub }:
+
+buildPythonPackage rec {
+  pname = "pytest-celery";
+  version = "0.1.0";
+
+  format = "flit";
+
+  src = fetchFromGitHub {
+    owner = "celery";
+    repo = "pytest-celery";
+    rev = "v${version}";
+    sha256 = "sha256-vzWwkOS3BLOInaFDk+PegvEmC88ZZ1sG1CmHwhn7r9w=";
+  };
+
+  postPatch = ''
+    # avoid infinite recursion with celery
+    substituteInPlace pyproject.toml \
+      --replace '"celery >= 4.4.0"' ""
+  '';
+
+  # This package has nothing to test or import.
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Pytest plugin to enable celery.contrib.pytest";
+    homepage = "https://github.com/celery/pytest-celery";
+    license = licenses.mit;
+    maintainers = [ ];
+  };
+}