{ ... }:

let
  homedir = builtins.getEnv "HOME";
in {
  programs.ssh = {
    controlMaster = "auto";
    enable = true;
    forwardAgent = true;
    matchBlocks = {
      "beryllium" = {
        hostname = "beryllium";
        forwardAgent = true;
        remoteForwards = let path = a: b: {host.address = a; bind.address = b;};
        in [
          ( path
            "/run/user/1000/gnupg/S.gpg-agent.extra"
            "/run/user/1000/gnupg/S.gpg-agent.extra"
          )
          ( path
            "/run/user/1000/gnupg/S.gpg-agent"
            "/run/user/1000/gnupg/S.gpg-agent"
          )
        ];
        extraOptions = {
          "StreamLocalBindUnlink" = "yes";
        };
      };
    };
  };
}