github-runner: replace=true (and uncomment the rest)

nix-darwin/ci/README.md

@@ -42,8 +42,10 @@ j remote-install
 
 As root, run `ssh -i /etc/ssh/ssh_host_ed25519_key srid@parallels-linux-builder ` to access it as known host.
 
-
-
 ### Via linux-builder
 
 See `nix-darwin/linux-builder`. Follow the instructions.
+
+## See also
+
+- [Zulip notes](https://nixos.zulipchat.com/#narrow/stream/413948-nixos/topic/Self-hosted.20GitHub.20runners)

nix-darwin/ci/github-runner.nix

@@ -13,6 +13,7 @@
       srid = {
         common = {
           enable = true;
+          replace = true;
           # TODO: Document instructions
           # - chmod og-rwx; chown github-runner
           # TODO: Use a secret manager. 1Password? https://github.com/LnL7/nix-darwin/issues/882
@@ -58,7 +59,6 @@
             url = "https://github.com/srid/nixos-config";
             num = 2;
           };
-          /*
           nixci = {
             url = "https://github.com/srid/nixci";
             num = 2;
@@ -79,7 +79,6 @@
             url = "https://github.com/srid/unionmount";
             num = 2;
           };
-          */
         };
       };
     in