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/misc/ptask/default.nix

@@ -0,0 +1,31 @@
+{ lib, stdenv, fetchurl, pkg-config, makeWrapper, gtk3, json_c, taskwarrior }:
+
+stdenv.mkDerivation rec {
+  pname = "ptask";
+  version = "1.0.0";
+
+  src = fetchurl {
+    url = "https://wpitchoune.net/ptask/files/ptask-${version}.tar.gz";
+    sha256 = "13nirr7b29bv3w2zc8zxphhmc9ayhs61i11jl4819nabk7vy1kdq";
+  };
+
+  buildInputs = [ gtk3 json_c ];
+
+  nativeBuildInputs = [ pkg-config makeWrapper ];
+
+  patches = [ ./tw-version.patch ./json_c_is_error.patch ];
+
+  preFixup = ''
+    wrapProgram "$out/bin/ptask" \
+      --prefix XDG_DATA_DIRS : "$GSETTINGS_SCHEMAS_PATH" \
+      --prefix PATH : "${taskwarrior}/bin"
+  '';
+
+  meta = with lib; {
+    homepage = "http://wpitchoune.net/ptask/";
+    description = "GTK-based GUI for taskwarrior";
+    license = licenses.gpl2;
+    maintainers = [ maintainers.spacefrogg ];
+    platforms = platforms.linux;
+  };
+}

pkgs/applications/misc/ptask/json_c_is_error.patch

@@ -0,0 +1,13 @@
+diff --git a/src/tw.c b/src/tw.c
+index 602f7b3..ca601cd 100644
+--- a/src/tw.c
++++ b/src/tw.c
+@@ -163,7 +163,7 @@ static struct json_object *task_exec_json(const char *opts)
+ 
+ 	free(cmd);
+ 
+-	if (o && is_error(o))
++	if (!o)
+ 		return NULL;
+ 
+ 	return o;

pkgs/applications/misc/ptask/tw-version.patch

@@ -0,0 +1,11 @@
+--- a/src/tw.c	2017-02-21 22:56:19.289037608 +0100
++++ b/src/tw.c	2017-02-21 22:57:04.726814256 +0100
+@@ -116,7 +116,7 @@
+ 	    || !strcmp(ver, "2.3.0")
+ 	    || !strcmp(ver, "2.4.0")
+ 	    || !strcmp(ver, "2.4.1")
+-	    || !strcmp(ver, "2.5.0"))
++	    || !strcmp(ver, "2.5.1"))
+ 		return 1;
+ 	else
+ 		return 0;