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/misc/nyancat/default.nix

@@ -0,0 +1,32 @@
+{ lib, stdenv, fetchFromGitHub }:
+
+stdenv.mkDerivation rec {
+  pname = "nyancat";
+  version = "1.5.2";
+
+  src = fetchFromGitHub {
+    owner = "klange";
+    repo = "nyancat";
+    rev = version;
+    sha256 = "1mg8nm5xzcq1xr8cvx24ym2vmafkw53rijllwcdm9miiz0p5ky9k";
+  };
+
+  postPatch = ''
+    substituteInPlace Makefile \
+      --replace /usr/bin "$out/bin" \
+      --replace /usr/share "$out/share"
+  '';
+
+  preInstall = ''
+    mkdir -p $out/bin
+    mkdir -p $out/share/man/man1
+  '';
+
+  meta = with lib; {
+    description = "Nyancat in your terminal, rendered through ANSI escape sequences";
+    homepage = "https://nyancat.dakko.us";
+    license = licenses.ncsa;
+    maintainers = with maintainers; [ midchildan ];
+    platforms = platforms.unix;
+  };
+}