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/electronics/xschem/default.nix

@@ -0,0 +1,47 @@
+{ stdenv
+, fetchFromGitHub
+, lib
+, bison
+, cairo
+, flex
+, libX11
+, libXpm
+, pkg-config
+, tcl
+, tk
+}:
+
+stdenv.mkDerivation rec {
+  pname = "xschem";
+  version = "3.0.0";
+
+  src = fetchFromGitHub {
+    owner = "StefanSchippers";
+    repo = "xschem";
+    rev = version;
+    sha256 = "sha256-C57jo8tAbiqQAgf4Xp2lpFGOr6F1knPpFcYxPiqSM4k=";
+  };
+
+  nativeBuildInputs = [ bison flex pkg-config ];
+
+  buildInputs = [ cairo libX11 libXpm tcl tk ];
+
+  hardeningDisable = [ "format" ];
+
+  meta = with lib; {
+    broken = stdenv.isDarwin;
+    description = "Schematic capture and netlisting EDA tool";
+    longDescription = ''
+      Xschem is a schematic capture program, it allows creation of
+      hierarchical representation of circuits with a top down approach.
+      By focusing on interfaces, hierarchy and instance properties a
+      complex system can be described in terms of simpler building
+      blocks. A VHDL or Verilog or Spice netlist can be generated from
+      the drawn schematic, allowing the simulation of the circuit.
+    '';
+    homepage = "https://xschem.sourceforge.io/stefan/";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ fbeffa ];
+    platforms = platforms.all;
+  };
+}