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/development/tools/misc/cscope/default.nix

@@ -0,0 +1,54 @@
+{ fetchurl, lib, stdenv, ncurses
+, emacsSupport ? true, emacs
+}:
+
+stdenv.mkDerivation rec {
+  pname = "cscope";
+  version = "15.9";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/${pname}/${pname}-${version}.tar.gz";
+    sha256 = "0ngiv4aj3rr35k3q3wjx0y19gh7i1ydqa0cqip6sjwd8fph5ll65";
+  };
+
+  configureFlags = [ "--with-ncurses=${ncurses.dev}" ];
+
+  buildInputs = [ ncurses ];
+  nativeBuildInputs = lib.optional emacsSupport emacs;
+
+  postInstall = lib.optionalString emacsSupport ''
+    cd "contrib/xcscope"
+
+    sed -i "cscope-indexer" \
+        -"es|^PATH=.*$|PATH=\"$out/bin:\$PATH\"|g"
+    sed -i "xcscope.el" \
+        -"es|\"cscope-indexer\"|\"$out/libexec/cscope/cscope-indexer\"|g";
+
+    mkdir -p "$out/libexec/cscope"
+    cp "cscope-indexer" "$out/libexec/cscope"
+
+    mkdir -p "$out/share/emacs/site-lisp"
+    emacs --batch --eval '(byte-compile-file "xcscope.el")'
+    cp xcscope.el{,c} "$out/share/emacs/site-lisp"
+  '';
+
+  meta = {
+    description = "A developer's tool for browsing source code";
+
+    longDescription = ''
+      Cscope is a developer's tool for browsing source code.  It has
+      an impeccable Unix pedigree, having been originally developed at
+      Bell Labs back in the days of the PDP-11.  Cscope was part of
+      the official AT&T Unix distribution for many years, and has been
+      used to manage projects involving 20 million lines of code!
+    '';
+
+    license = "BSD-style";
+
+    homepage = "http://cscope.sourceforge.net/";
+
+    maintainers = with lib.maintainers; [viric];
+
+    platforms = lib.platforms.unix;
+  };
+}