twemoji: apply nixpkgs changes

modules/twemoji/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl }:
+{ pkgs, lib, stdenv }:
 
 let
   _fedrel = "2.fc37";
@@ -7,15 +7,24 @@ stdenv.mkDerivation rec {
   pname = "ttf-twemoji";
   version = "14.0.2";
 
-  src = builtins.fetchTarball {
+  src = pkgs.fetchurl {
     url = "https://kojipkgs.fedoraproject.org/packages/twitter-twemoji-fonts/${version}/${_fedrel}/noarch/twitter-twemoji-fonts-${version}-${_fedrel}.noarch.rpm";
-    sha256 = "sha256:11ay3jc4qd3z1mnijnwdns4bi22y204lva7l7vkazybx1nzrwscl";
+    hash = "sha256-GK7JZzHs/9gSViSTPPv3V/LFfdGzj4F50VO5HSqs0VE=";
   };
 
+  nativeBuildInputs = with pkgs; [
+    rpm
+    cpio
+  ];
+
+  unpackPhase = ''
+    rpm2cpio $src | cpio -i --make-directories
+  '';
+
   dontBuild = true;
 
   installPhase = ''
-    install -Dm755 share/fonts/twemoji/Twemoji.ttf $out/share/fonts/truetype/Twemoji.ttf
+    install -Dm755 usr/share/fonts/twemoji/Twemoji.ttf $out/share/fonts/truetype/Twemoji.ttf
   '';
 
   meta = with lib; {