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/zchaff/default.nix

@@ -0,0 +1,27 @@
+{ lib, clangStdenv, fetchurl }:
+
+clangStdenv.mkDerivation rec {
+  pname = "zchaff";
+  version = "2004.5.13";
+
+  src = fetchurl {
+    url = "https://www.princeton.edu/~chaff/zchaff/zchaff.${version}.tar.gz";
+    sha256 = "sha256-IgOdb2KsFbRV3gPvIPkHa71ixnYRxyx91vt7m0jzIAw=";
+  };
+
+  patches = [ ./sat_solver.patch ];
+  makeFlags = [ "CC=${clangStdenv.cc.targetPrefix}c++" ];
+  installPhase= ''
+    runHook preInstall
+    install -Dm755 -t $out/bin zchaff
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    homepage = "https://www.princeton.edu/~chaff/zchaf";
+    description = "Accelerated SAT Solver from Princeton";
+    license = licenses.mit;
+    maintainers = with maintainers; [ siraben ];
+    platforms = platforms.unix;
+  };
+}

pkgs/applications/science/logic/zchaff/sat_solver.patch

@@ -0,0 +1,12 @@
+diff --git a/sat_solver.cpp b/sat_solver.cpp
+index e191881..07c0926 100644
+--- a/sat_solver.cpp
++++ b/sat_solver2.cpp
+@@ -43,6 +43,7 @@
+ #include <vector>
+ #include <dirent.h>
+ #include "SAT.h"
++#include <cstring>
+ 
+ using namespace std;
+