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/tools/backup/s3ql/default.nix

@@ -0,0 +1,37 @@
+{ lib, fetchFromGitHub, python3Packages, sqlite, which }:
+
+python3Packages.buildPythonApplication rec {
+  pname = "s3ql";
+  version = "3.8.1";
+
+  src = fetchFromGitHub {
+    owner = pname;
+    repo = pname;
+    rev = "release-${version}";
+    sha256 = "0kk8jjb9zir4wfxv4zsa4ysj77322l73vddcx4y6czjq1j9jz9f2";
+  };
+
+  checkInputs = [ which ] ++ (with python3Packages; [ cython pytest pytest-trio ]);
+  propagatedBuildInputs = with python3Packages; [
+    sqlite apsw pycrypto requests defusedxml dugong
+    google-auth google-auth-oauthlib trio pyfuse3
+  ];
+
+  preBuild = ''
+    ${python3Packages.python.interpreter} ./setup.py build_cython build_ext --inplace
+  '';
+
+  checkPhase = ''
+    # Removing integration tests
+    rm tests/t{4,5,6}_*
+    pytest tests
+  '';
+
+  meta = with lib; {
+    description = "A full-featured file system for online data storage";
+    homepage = "https://github.com/s3ql/s3ql/";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ rushmorem ];
+    platforms = platforms.linux;
+  };
+}