anchor.diff:  { stdenv, lib, rustPlatform, fetchgit
  -, pkg-config, wayland-scanner, libcap, minijail, wayland, wayland-protocols
  +, pkg-config, wayland-scanner
  +, libcap, libdrm, libepoxy, minijail, virglrenderer, wayland, wayland-protocols
   , linux
   }:
   
  
positive.code:     preBuild = ''
        export DEFAULT_SECCOMP_POLICY_DIR=$out/share/policy
      '';
  
      postInstall = ''
        mkdir -p $out/share/policy/
  
negative.code: 
      nativeBuildInputs = [ pkg-config wayland-scanner ];
  
      buildInputs = [
        libcap libdrm libepoxy minijail virglrenderer wayland wayland-protocols
      ];
  
      postPatch = ''
        cp ${./Cargo.lock} Cargo.lock
  