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/vdo/default.nix

@@ -0,0 +1,64 @@
+{ lib, stdenv
+, fetchFromGitHub
+, installShellFiles
+, libuuid
+, lvm2_dmeventd  # <libdevmapper-event.h>
+, zlib
+, python3
+}:
+
+stdenv.mkDerivation rec {
+  pname = "vdo";
+  version = "8.1.1.360";  # kvdo uses this!
+
+  src = fetchFromGitHub {
+    owner = "dm-vdo";
+    repo = pname;
+    rev = version;
+    sha256 = "1zp8aaw0diramnlx5z96jcpbm6x0r204xf1vwq6k21rzcazczkwv";
+  };
+
+  nativeBuildInputs = [
+    installShellFiles
+  ];
+
+  buildInputs = [
+    libuuid
+    lvm2_dmeventd
+    zlib
+    python3.pkgs.wrapPython
+  ];
+
+  propagatedBuildInputs = with python3.pkgs; [
+    pyyaml
+  ];
+
+  pythonPath = propagatedBuildInputs;
+
+  makeFlags = [
+    "DESTDIR=${placeholder "out"}"
+    "INSTALLOWNER="
+    # all of these paths are relative to DESTDIR and have defaults that don't work for us
+    "bindir=/bin"
+    "defaultdocdir=/share/doc"
+    "mandir=/share/man"
+    "python3_sitelib=${python3.sitePackages}"
+  ];
+
+  enableParallelBuilding = true;
+
+  postInstall = ''
+    installShellCompletion --bash $out/bash_completion.d/*
+    rm -r $out/bash_completion.d
+
+    wrapPythonPrograms
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/dm-vdo/vdo";
+    description = "A set of userspace tools for managing pools of deduplicated and/or compressed block storage";
+    platforms = platforms.linux;
+    license = with licenses; [ gpl2Plus ];
+    maintainers = with maintainers; [ ajs124 ];
+  };
+}