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/os-specific/linux/tomb/default.nix

@@ -0,0 +1,44 @@
+{ stdenv, lib, fetchFromGitHub, makeWrapper
+, gettext, zsh, pinentry, cryptsetup, gnupg, util-linux, e2fsprogs, sudo
+}:
+
+stdenv.mkDerivation rec {
+  pname = "tomb";
+  version = "2.9";
+
+  src = fetchFromGitHub {
+    owner  = "dyne";
+    repo   = "Tomb";
+    rev    = "v${version}";
+    sha256 = "0d6vmfcf4kd0p2bcljmdnyc2fmbwvar81cc472zx86r7yc3ih102";
+  };
+
+  buildInputs = [ sudo zsh pinentry ];
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  postPatch = ''
+    # if not, it shows .tomb-wrapped when running
+    substituteInPlace tomb \
+      --replace 'TOMBEXEC=$0' 'TOMBEXEC=tomb'
+  '';
+
+  doInstallCheck = true;
+  installCheckPhase = "$out/bin/tomb -h";
+
+  installPhase = ''
+    install -Dm755 tomb       $out/bin/tomb
+    install -Dm644 doc/tomb.1 $out/share/man/man1/tomb.1
+
+    wrapProgram $out/bin/tomb \
+      --prefix PATH : $out/bin:${lib.makeBinPath [ cryptsetup gettext gnupg pinentry util-linux e2fsprogs ]}
+  '';
+
+  meta = with lib; {
+    description = "File encryption on GNU/Linux";
+    homepage    = "https://www.dyne.org/software/tomb/";
+    license     = licenses.gpl3;
+    maintainers = with maintainers; [ peterhoeg ];
+    platforms   = platforms.linux;
+  };
+}