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/applications/office/paperwork/paperwork-backend.nix

@@ -0,0 +1,77 @@
+{ buildPythonPackage
+, lib
+, fetchFromGitLab
+
+, isPy3k
+, isPyPy
+
+, pyenchant
+, scikit-learn
+, pypillowfight
+, pycountry
+, whoosh
+, termcolor
+, python-Levenshtein
+, pygobject3
+, pyocr
+, natsort
+, libinsane
+, distro
+, openpaperwork-core
+, openpaperwork-gtk
+, psutil
+
+, pkgs
+}:
+
+buildPythonPackage rec {
+  pname = "paperwork-backend";
+  inherit (import ./src.nix { inherit fetchFromGitLab; }) version src;
+
+  sourceRoot = "source/paperwork-backend";
+
+  # Python 2.x is not supported.
+  disabled = !isPy3k && !isPyPy;
+
+  patchPhase = ''
+    echo 'version = "${version}"' > src/paperwork_backend/_version.py
+    chmod a+w -R ..
+    patchShebangs ../tools
+  '';
+
+  propagatedBuildInputs = [
+    pyenchant
+    scikit-learn
+    pypillowfight
+    pycountry
+    whoosh
+    termcolor
+    python-Levenshtein
+    libinsane
+    pygobject3
+    pyocr
+    natsort
+    pkgs.poppler_gi
+    pkgs.gtk3
+    distro
+    openpaperwork-core
+  ];
+
+  preCheck = ''
+    export HOME=$(mktemp -d)
+  '';
+
+  nativeBuildInputs = [ pkgs.gettext pkgs.which pkgs.shared-mime-info ];
+  preBuild = ''
+    make l10n_compile
+  '';
+
+  checkInputs = [ openpaperwork-gtk psutil pkgs.libreoffice ];
+
+  meta = {
+    description = "Backend part of Paperwork (Python API, no UI)";
+    homepage = "https://openpaper.work/";
+    license = lib.licenses.gpl3Plus;
+    maintainers = with lib.maintainers; [ aszlig symphorien ];
+  };
+}