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/agedu/default.nix

@@ -0,0 +1,41 @@
+{ lib, stdenv
+, fetchgit
+, cmake
+, halibut
+}:
+let
+  date = "20211129";
+  rev = "8cd63c5";
+in
+stdenv.mkDerivation {
+  pname = "agedu";
+  version = "${date}.${rev}";
+
+  # upstream provides tarballs but it seems they disappear after the next version is released
+  src = fetchgit {
+    url = "https://git.tartarus.org/simon/agedu.git";
+    inherit rev;
+    hash = "sha256-5wqpL7wrFwIf6lxVte+GXLsXYY0/36EIAUepVNDCnSE=";
+  };
+
+  nativeBuildInputs = [ cmake halibut ];
+
+  meta = with lib; {
+    description = "A Unix utility for tracking down wasted disk space";
+    longDescription = ''
+       Most Unix file systems, in their default mode, helpfully record when a
+       file was last accessed. So if you generated a large amount of data years
+       ago, forgot to clean it up, and have never used it since, then it ought
+       in principle to be possible to use those last-access time stamps to tell
+       the difference between that and a large amount of data you're still
+       using regularly.
+
+       agedu uses this information to tell you which files waste disk space when
+       you haven't used them since a long time.
+    '';
+    homepage = "https://www.chiark.greenend.org.uk/~sgtatham/agedu/";
+    license = licenses.mit;
+    maintainers = with maintainers; [ symphorien ];
+    platforms = platforms.unix;
+  };
+}