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/data/fonts/emojione/default.nix

@@ -0,0 +1,50 @@
+{ lib, stdenv, fetchFromGitHub, fetchpatch, inkscape, imagemagick, potrace, svgo, scfbuild }:
+
+stdenv.mkDerivation rec {
+  pname = "emojione";
+  version = "1.4";
+
+  src = fetchFromGitHub {
+    owner = "eosrei";
+    repo = "emojione-color-font";
+    rev = "v${version}";
+    sha256 = "1781kxfbhnvylypbkwxc3mx6hi0gcjisfjr9cf0jdz4d1zkf09b3";
+  };
+
+  patches = [
+    # Fix build with Inkscape 1.0
+    # https://github.com/eosrei/twemoji-color-font/pull/82
+    (fetchpatch {
+      url = "https://github.com/eosrei/twemoji-color-font/commit/208ad63c2ceb38c528b5237abeb2b85ceedc1d37.patch";
+      sha256 = "7tDWIkpcdir1V6skgXSM3r0FwHy0F6PyJ07OPRsSStA=";
+      postFetch = ''
+        substituteInPlace $out \
+          --replace "inkscape --without-gui" "inkscape --export-png" \
+          --replace TWEMOJI EMOJIONE \
+          --replace "the assets" "the emojione assets" \
+          --replace twemoji emojione
+      '';
+    })
+  ];
+
+  preBuild = ''
+    sed -i 's,SCFBUILD :=.*,SCFBUILD := scfbuild,' Makefile
+    # Shut up inkscape's warnings
+    export HOME="$NIX_BUILD_ROOT"
+  '';
+
+  nativeBuildInputs = [ inkscape imagemagick potrace svgo scfbuild ];
+
+  enableParallelBuilding = true;
+
+  installPhase = ''
+    install -Dm755 build/EmojiOneColor-SVGinOT.ttf $out/share/fonts/truetype/EmojiOneColor-SVGinOT.ttf
+  '';
+
+  meta = with lib; {
+    description = "Open source emoji set";
+    homepage = "http://emojione.com/";
+    license = licenses.cc-by-40;
+    maintainers = with maintainers; [ abbradar ];
+  };
+}