flakes: Do not verify channels when using flakes.

[jsoo1]

#403

[jsoo1]

It's been a while and I had to back track from using flakes. But if memory serves, if the system has no channels at all, the check will fail and just not activate the system at all. I.E. if nix is installed with --no-channel-add: https://github.com/NixOS/nix/blob/7e301fd74e929af916116a04d84e130f9e0112de/scripts/install-nix-from-closure.sh#L74

[jsoo1]

In any case, when using flakes, nix-darwin won't even refer to a channel, correct?

[socksy]

This is blocking me from updating — any ideas how to workaround this in the meantime?

[malob]

@socksy, can you provide some more details, e.g., the command you're running, the error that results, and a link to your config if it's posted online?

[socksy]

After a full night's sleep I solved it! :)

I was doing

sudo rm -r ~/.nix-channels
nix-channel --update

which would error out when I did darwin-rebuild switch --flake ".#" with a symlink does not point your users channels, aborting activation.

I solved it last night by just doing sudo darwin-rebuild switch --flake ".#", which was not ideal. Now I looked closer, and saw that the second time around I was actually getting the error that ~/.nix-defexpr/channels was pointing at the wrong thing. The solution simply was to

sudo rm -r  ~/.nix-defexpr/channels
nix-channel --update

and now the darwin-rebuild works again

[yangm97]

LGTM. Can we get this merged?

[Enzime]

@domenkozar just ran into this issue, any chance you can take a look at this PR?

[domenkozar]

@jsoo1 could you rebase?

[jsoo1]

Sure. It's been a bit since I thought about this one. One sec...

[emilazy]

Note that https://github.com/LnL7/nix-darwin/pull/723 ended up effectively reverting this, due to https://github.com/LnL7/nix-darwin/pull/723#discussion_r1257442026. Hopefully if people start having this problem again we can figure out what's causing it or else re-disable the check.