{ stable, ... }:
{
  programs.ssh = {
    enable = true;
    enableDefaultConfig = false;
    "${if stable then "matchBlocks" else "settings"}" = {
      "*" = {
        forwardAgent = false;
        addKeysToAgent = "yes";
        compression = false;
        serverAliveInterval = 0;
        serverAliveCountMax = 3;
        hashKnownHosts = false;
        userKnownHostsFile = "~/.ssh/known_hosts";
        controlMaster = "no";
        controlPath = "~/.ssh/master-%r@%n:%p";
        controlPersist = "no";
      };
      "*.pvv.ntnu.no microbel pvv-login" = {
        identityFile = "~/.ssh/pvv_nixos_id_ed25519";
        user = "vegardbm";
      };
      "git.pvv.ntnu.no pvv-git" = {
        port = 2222;
        user = "Gitea";
        hostname = "git.pvv.ntnu.no";
        proxyJump = "microbel";
        identityFile = "~/.ssh/pvv_gitea_id_ed25519";
      };
      "github.com" = {
        hostname = "github.com";
        identityFile = "~/.ssh/nixos_xeon_github_id_ed25519";
      };
      "microbel" = {
        hostname = "microbel.pvv.ntnu.no";
      };
      "pvv-login" = {
        hostname = "login.pvv.ntnu.no";
      };
    };
  };
}