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/jupyterhub-systemdspawner/default.nix

@@ -0,0 +1,50 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, jupyterhub
+, tornado
+, bash
+}:
+
+buildPythonPackage rec {
+  pname = "jupyterhub-systemdspawner";
+  version = "0.15";
+
+  src = fetchFromGitHub {
+    owner = "jupyterhub";
+    repo = "systemdspawner";
+    rev = "v${version}";
+    sha256 = "sha256-EUCA+CKCeYr+cLVrqTqe3Q32JkbqeALL6tfOnlVHk8Q=";
+  };
+
+  propagatedBuildInputs = [
+    jupyterhub
+    tornado
+  ];
+
+  buildInputs = [ bash ];
+
+  postPatch = ''
+    substituteInPlace systemdspawner/systemd.py \
+      --replace "/bin/bash" "${bash}/bin/bash"
+
+    substituteInPlace systemdspawner/systemdspawner.py \
+      --replace "/bin/bash" "${bash}/bin/bash"
+  '';
+
+  # no tests
+  doCheck = false;
+
+  postInstall = ''
+    mkdir -p $out/bin
+    cp check-kernel.bash $out/bin/
+    patchShebangs $out/bin
+  '';
+
+  meta = with lib; {
+    description = "JupyterHub Spawner using systemd for resource isolation";
+    homepage = "https://github.com/jupyterhub/systemdspawner";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ costrouc erictapen ];
+  };
+}