Like many, I ran out of space on my Mac and decided to move the nix store to an external drive. First, I followed the guide here: https://discourse.nixos.org/t/how-to-move-nix-store-to-external-drive-on-macos/19592/10

This ended up exhibiting the same behaviour I have now, reproduced by:

• Installing Lix on a separate drive
• Installing nix-darwin and switching to my config

What I see is that org.nixos.activate-system fails with exit code 126. I am not sure if this service is installed by nix-darwin or Lix.

This service runs the command /bin/sh -c "/bin/wait4path /nix/store && exec /nix/store/67sq1xa1zmrngm8bnjxr8025lb6ddgfi-activate-system-start", which if I run manually as root, works. It only fails when launchd runs it.

This causes /run/current-system to be absent. Everything else seems to work (/nix is mounted)

Also, tailscaled also fails, with exit code 1. Not sure if this is a seperate issue, but it coincides with placing the nix store on an external drive.

All login items (the sh items) are enabled. There are 4 of them. Nix has full disk access.