Reinitialize Nix after /nix/store is destroyed

Help
1

Hi,

How can I set Nix back to work? The system isn’t NixOS (Manjaro)

2

What exactly happened?

If all of your environments were declarative, you can simply uninstall Nix and then install it via the official installer again. Then rebuild your environments.

3

My Nix is installed from the Arch repo (1.1 Native). I tried to reinstall it, but no luck. It still expects something in /nix/store (which is empty):

+ sudo systemctl start nix-daemon
+ nix-channel --add https://nixos.org/channels/nixpkgs-unstable
+ nix-channel --update
unpacking channels...
error: opening file '/nix/store/cgw5ci9s1596m8ripyyaral802cqg77h-nixpkgs.drv': No such file or directory
error: program '/usr/bin/nix-env' failed with exit code 1
4

Isn’t there some database which isn’t properly deleted?

5 
sudo rm -rf /nix

is the answer. Then one can reinstall Nix.

6

Please use the upstream or detsys installer. I don’t get the point of using another distro’s package for Nix.