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/system/incron/default.nix

@@ -0,0 +1,37 @@
+{ lib, stdenv, fetchFromGitHub, bash }:
+
+stdenv.mkDerivation rec {
+  pname = "incron";
+  version = "0.5.12";
+  src = fetchFromGitHub {
+    owner = "ar-";
+    repo = "incron";
+    rev = "${pname}-${version}";
+    sha256 = "11d5f98cjafiv9h9zzzrw2s06s2fvdg8gp64km7mdprd2xmy6dih";
+  };
+
+  patches = [ ./default_path.patch ];
+
+  prePatch = ''
+    sed -i "s|/bin/bash|${bash}/bin/bash|g" usertable.cpp
+  '';
+
+  installFlags = [ "PREFIX=$(out)" ];
+  installTargets = [ "install-man" ];
+
+  preInstall = ''
+    mkdir -p $out/bin
+
+    # make install doesn't work because setuid and permissions
+    # just manually install the binaries instead
+    cp incrond incrontab $out/bin/
+  '';
+
+  meta = with lib; {
+    description = "A cron-like daemon which handles filesystem events";
+    homepage = "https://github.com/ar-/incron";
+    license = licenses.gpl2;
+    maintainers = [ maintainers.aanderse ];
+    platforms = platforms.linux;
+  };
+}