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/web-apps/vikunja/frontend.nix

@@ -0,0 +1,33 @@
+{ stdenv, lib, fetchurl, unzip, nixosTests, ... }:
+
+stdenv.mkDerivation rec {
+  pname = "vikunja-frontend";
+  version = "0.18.1";
+  src = fetchurl {
+    url = "https://dl.vikunja.io/frontend/${pname}-${version}.zip";
+    sha256 = "sha256-u4XA6Jqn+p2J0sB2KabwZY/lFwZakZEvUUh/enrhtN4=";
+  };
+
+  nativeBuildInputs = [ unzip ];
+
+  sourceRoot = ".";
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/
+    cp -r * $out/
+
+    runHook postInstall
+  '';
+
+  passthru.tests.vikunja = nixosTests.vikunja;
+
+  meta = {
+    description = "Frontend of the Vikunja to-do list app";
+    homepage = "https://vikunja.io/";
+    license = lib.licenses.agpl3Plus;
+    maintainers = with lib.maintainers; [ leona ];
+    platforms = lib.platforms.all;
+  };
+}