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/applications/science/chemistry/chemtool/default.nix

@@ -0,0 +1,57 @@
+{ lib
+, stdenv
+, fetchurl
+, pkg-config
+, libX11
+, gtk2
+, fig2dev
+, wrapGAppsHook
+}:
+
+stdenv.mkDerivation rec {
+  pname = "chemtool";
+  version = "1.6.14";
+
+  src = fetchurl {
+    url = "http://ruby.chemie.uni-freiburg.de/~martin/${pname}/${pname}-${version}.tar.gz";
+    sha256 = "hhYaBGE4azNKX/sXzfCUpJGUGIRngnL0V0mBNRTdr8s=";
+  };
+
+  nativeBuildInputs = [ pkg-config wrapGAppsHook ];
+  buildInputs = [
+    libX11
+    gtk2
+    fig2dev
+  ];
+
+  # Workaround build on -fno-common toolchains like upstream gcc-10.
+  # Otherwise built fails as:
+  #   ld: inout.o:/build/chemtool-1.6.14/ct1.h:279: multiple definition of
+  #     `outtype'; draw.o:/build/chemtool-1.6.14/ct1.h:279: first defined here
+  NIX_CFLAGS_COMPILE = "-fcommon";
+
+  preFixup = ''
+    gappsWrapperArgs+=(--prefix PATH : "${lib.makeBinPath [ fig2dev ]}")
+  '';
+
+  meta = with lib; {
+    homepage = "http://ruby.chemie.uni-freiburg.de/~martin/chemtool/";
+    description = "Draw chemical structures";
+    longDescription = ''
+      Chemtool is a program for drawing organic molecules. It runs under the X
+      Window System using the GTK widget set.
+
+      Most operations in chemtool can be accomplished using the mouse - the
+      first (usually the left) button is used to select or place things, the
+      middle button modifies properties (e.g. reverses the direction of a bond),
+      and the right button is used to delete objects.
+
+      The program offers essentially unlimited undo/redo, two text fonts plus
+      symbols, seven colors, drawing at several zoom scales, and square and
+      hexagonal backdrop grids for easier alignment.
+    '';
+    license = licenses.mit;
+    maintainers = with maintainers; [ AndersonTorres ];
+    platforms = platforms.linux;
+  };
+}