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/networking/bsd-finger/default.nix

@@ -0,0 +1,47 @@
+{ lib
+, stdenv
+, fetchurl
+, buildClient ? true
+}:
+
+stdenv.mkDerivation rec {
+  srcName = "bsd-finger";
+  pname = srcName + lib.optionalString (!buildClient) "d";
+  version = "0.17";
+
+  src = fetchurl {
+    url = "mirror://ibiblioPubLinux/system/network/finger/${srcName}-${version}.tar.gz";
+    hash = "sha256-hIhdZo0RfvUOAccDSkXYND10fOxiEuQOjQgVG8GOE/o=";
+  };
+
+  # outputs = [ "out" "man" ];
+
+  NIX_CFLAGS_COMPILE = "-D_GNU_SOURCE";
+
+  patches = [
+    ./ubuntu-0.17-9.patch
+  ];
+
+  preBuild = let
+    srcdir = if buildClient then "finger" else "fingerd";
+  in ''
+    cd ${srcdir}
+  '';
+
+  preInstall = let
+    bindir = if buildClient then "bin" else "sbin";
+    mandir = if buildClient then "man/man1" else "man/man8";
+  in ''
+    mkdir -p $out/${bindir} $out/${mandir}
+  '';
+
+  meta = with lib; {
+    description =
+      if buildClient
+      then "User information lookup program"
+      else "Remote user information server";
+    platforms = platforms.linux;
+    license = licenses.bsdOriginal;
+  };
+}
+# TODO: multiple outputs (manpage)