_: {
  services = {
    ssh-agent.enable = true;
  };
  programs = {
    ssh = {
      enable = true;
      enableDefaultConfig = false;
      settings."codeberg.org" = {
        IdentitiesOnly = "yes";
        IdentityFile = "~/.ssh/id_ed25519_codeberg";
        AddKeysToAgent = "yes";
      };
      settings."tangled.org" = {
        IdentitiesOnly = "yes";
        IdentityFile = "~/.ssh/id_ed25519_tangled";
        AddKeysToAgent = "yes";
      };
    };
  };
}