nixos/options/custom/programs/ssh.nix

{
  config,
  lib,
  ...
}:
with lib; let
  cfg = config.custom.programs.ssh;
in {
  options.custom.programs.ssh.enable = mkOption {default = false;};

  config = mkIf cfg.enable {
    # Disable prompt for new hosts
    # MitM warning is still active
    programs.ssh.extraConfig = ''
      StrictHostKeyChecking no
    '';

    home-manager.users.${config.custom.username} = {
      programs.ssh = {
        enable = true;

        extraConfig = ''
          Host *
            IdentityAgent ~/.1password/agent.sock
        '';
      };

      # Work around FHS permissions
      # https://github.com/nix-community/home-manager/issues/322#issuecomment-1856128020
      home.file.".ssh/config" = {
        target = ".ssh/config_source";
        onChange = "cat ~/.ssh/config_source > ~/.ssh/config && chmod 400 ~/.ssh/config";
      };
    };
  };
}