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/servers/pinnwand/steck.nix

@@ -0,0 +1,43 @@
+{ lib
+, pkgs
+, python3Packages
+, nixosTests
+}:
+
+python3Packages.buildPythonApplication rec {
+  pname = "steck";
+  version = "0.7.0";
+
+  src = python3Packages.fetchPypi {
+    inherit pname version;
+    sha256 = "1a3l427ibwck9zzzy1sp10hmjgminya08i4r9j4559qzy7lxghs1";
+  };
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace 'click>=7.0,<8.0' 'click'
+  '';
+
+  propagatedBuildInputs = with python3Packages; [
+    pkgs.git
+    appdirs
+    click
+    python-magic
+    requests
+    termcolor
+    toml
+  ];
+
+  # tests are not in pypi package
+  doCheck = false;
+
+  passthru.tests = nixosTests.pinnwand;
+
+  meta = with lib; {
+    homepage = "https://github.com/supakeen/steck";
+    license = licenses.mit;
+    description = "Client for pinnwand pastebin";
+    maintainers = with maintainers; [ hexa ];
+  };
+}
+