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/logic/picosat/default.nix

@@ -0,0 +1,44 @@
+{ lib, stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  pname = "picosat";
+  version = "965";
+
+  src = fetchurl {
+    url = "http://fmv.jku.at/picosat/${pname}-${version}.tar.gz";
+    sha256 = "0m578rpa5rdn08d10kr4lbsdwp4402hpavrz6n7n53xs517rn5hm";
+  };
+
+  prePatch = ''
+    substituteInPlace picosat.c --replace "sys/unistd.h" "unistd.h"
+
+    substituteInPlace makefile.in \
+      --replace 'ar rc' '$(AR) rc' \
+      --replace 'ranlib' '$(RANLIB)'
+  '';
+
+  configurePhase = "./configure.sh --shared --trace";
+
+  makeFlags = lib.optional stdenv.isDarwin
+    "SONAME=-Wl,-install_name,$(out)/lib/libpicosat.so";
+
+  installPhase = ''
+   mkdir -p $out/bin $out/lib $out/share $out/include/picosat
+   cp picomus picomcs picosat picogcnf "$out"/bin
+
+   cp VERSION      "$out"/share/picosat.version
+   cp picosat.o    "$out"/lib
+   cp libpicosat.a "$out"/lib
+   cp libpicosat.so "$out"/lib
+
+   cp picosat.h "$out"/include/picosat
+  '';
+
+  meta = {
+    description = "SAT solver with proof and core support";
+    homepage    = "http://fmv.jku.at/picosat/";
+    license     = lib.licenses.mit;
+    platforms   = lib.platforms.unix;
+    maintainers = with lib.maintainers; [ roconnor thoughtpolice ];
+  };
+}