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/tools/misc/fffuu/default.nix

@@ -0,0 +1,51 @@
+{ mkDerivation, haskellPackages, fetchFromGitHub, lib }:
+
+mkDerivation {
+  pname = "fffuu";
+  version = "unstable-2018-05-26";
+
+  src = fetchFromGitHub {
+    owner = "diekmann";
+    repo = "Iptables_Semantics";
+    rev = "e0a2516bd885708fce875023b474ae341cbdee29";
+    sha256 = "1qc7p44dqja6qrjbjdc2xn7n9v41j5v59sgjnxjj5k0mxp58y1ch";
+  };
+
+  postPatch = ''
+    substituteInPlace haskell_tool/fffuu.cabal \
+      --replace "containers >=0.5 && <0.6" "containers >= 0.6" \
+      --replace "optparse-generic >= 1.2.3 && < 1.3" "optparse-generic >= 1.2.3"
+  '';
+
+  preCompileBuildDriver = ''
+    cd haskell_tool
+  '';
+
+  isLibrary = false;
+
+  isExecutable = true;
+
+  # fails with sandbox
+  doCheck = false;
+
+  libraryHaskellDepends = with haskellPackages; [
+    base
+    containers
+    split
+    parsec
+    optparse-generic
+  ];
+
+  executableHaskellDepends = with haskellPackages; [ base ];
+
+  testHaskellDepends = with haskellPackages; [
+    tasty
+    tasty-hunit
+    tasty-golden
+  ];
+
+  description = "Fancy Formal Firewall Universal Understander";
+  homepage = "https://github.com/diekmann/Iptables_Semantics/tree/master/haskell_tool";
+  license = lib.licenses.bsd2;
+  maintainers = [ lib.maintainers.marsam ];
+}