How do I uninstall nix-darwin or rollback previous version when nix can not build the uninstaller

[ylbeethoven]

Hi,

Does anyone know how to uninstall nix-darwin when nix can't build the uninstaller and darwin-switch is gone? In fact, the whole /run/current-system/sw/* is gone.

mpro14% nix-build https://github.com/LnL7/nix-darwin/archive/master.tar.gz -A uninstaller
warning: Nix search path entry '/nix/var/nix/profiles/per-user/root/channels' does not exist, ignoring
error: unable to download 'https://cache.nixos.org/5vfv3x1l1y7dg8npyq3g8pgyj1g3axfb.narinfo': Problem with the SSL CA cert (path? access rights?) (77)

I also tried to uninstall nix but that did not work either.

mpro14% /nix/nix-installer uninstall
`nix-installer` needs to run as `root`, attempting to escalate now via `sudo`...
`nix-darwin` installation detected, it must be removed before uninstalling Nix. Please refer to https://github.com/LnL7/nix-darwin#uninstalling for instructions how to uninstall `nix-darwin`.

Does anyone know how I can build again?

Thank you

[yysushi]

For the SSL error, you can check this comment.
https://discourse.nixos.org/t/ssl-ca-cert-error-on-macos/31171/5

[ylbeethoven]

I can't remember which tutorial I followed, I solved the issue by generating a new ca certificate manually.