{
  programs.ssh = {
    enable = true;
    compression = true;
    matchBlocks = {
#      "gitlab.com" = {
#        hostname = "gitlab.com";
#        identityFile = "~/.ssh/gitlab";
#        identitiesOnly = true;
#      };
#      "github.com" = {
#        hostname = "github.com";
#        identityFile = "~/.ssh/github";
#        identitiesOnly = true;
#      };
#      "bitbucket.com" = {
#        hostname = "bitbucket.com";
#        identityFile = "~/.ssh/bitbucket";
#        identitiesOnly = true;
#      };
#      "aur.archlinux.org" = {
#        hostname = "aur.archlinux.org";
#        identityFile = "~/.ssh/aur";
#        identitiesOnly = true;
#      };
#      "heroku.com" = {
#        hostname = "heroku.com";
#        identityFile = "~/.ssh/heroku";
#        identitiesOnly = true;
#      };
#      "ngrok.io" = {
#  			hostname = "ngrok.io";
#  			identityFile = "~/.ssh/local";
#  			identitiesOnly = true;
#      };
#      "172.27.108.?" = {
#  			hostname = "172.27.108.?";
#  			identityFile = "~/.ssh/local";
#  			identitiesOnly = true;
#      };
      "*" = {
    		identityFile = "~/.ssh/id_ed25519";
      };
    };
  };
}