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/gcal/default.nix

@@ -0,0 +1,36 @@
+{ lib, stdenv, fetchurl, ncurses, gettext, fetchpatch }:
+
+stdenv.mkDerivation rec {
+  pname = "gcal";
+  version = "4.1";
+
+  src = fetchurl {
+    url = "mirror://gnu/gcal/${pname}-${version}.tar.xz";
+    sha256 = "1av11zkfirbixn05hyq4xvilin0ncddfjqzc4zd9pviyp506rdci";
+  };
+
+  patches = [
+    (fetchpatch {
+      url = "https://src.fedoraproject.org/rpms/gcal/raw/master/f/gcal-glibc-no-libio.patch";
+      sha256 = "0l4nw9kgzsay32rsdwvs75pbp4fhx6pfm85paynfbd20cdm2n2kv";
+    })
+  ];
+
+  enableParallelBuilding = true;
+
+  buildInputs = [ ncurses ] ++ lib.optional stdenv.isDarwin gettext;
+
+  meta = {
+    description = "Program for calculating and printing calendars";
+    longDescription = ''
+      Gcal is the GNU version of the trusty old cal(1). Gcal is a
+      program for calculating and printing calendars. Gcal displays
+      hybrid and proleptic Julian and Gregorian calendar sheets.  It
+      also displays holiday lists for many countries around the globe.
+    '';
+    homepage = "https://www.gnu.org/software/gcal/";
+    license = lib.licenses.gpl3Plus;
+    platforms = lib.platforms.unix;
+    maintainers = [ lib.maintainers.romildo ];
+  };
+}