feat: check if homebrew exists

[codingCoffee]

fixes #778

• unsure if checkHomebrewInstall should be a conditional check

cc: @Enzime please recommend changes

[codingCoffee]

Also @joaothallis is there a way to evaluate the checkHomebrewInstall check only if the user has homebrew.enable = true in this nix configuration?

[emilazy]

You can use mkIf in the system.checks.text entry.

[Enzime]

Please let us know if you're still interested on working on this PR

[codingCoffee]

Hey @Enzime, definitely interested in submitting the PR. I've commited the suggessions and resolved the conflicts. Please do tell if I need to make any more changes.

[Enzime]

Can you squash all the commits into one?

[codingCoffee]

Hey @Enzime, I just ended up creating a separate PR: #1160. Squashing was proving to be difficult since this is such an old PR. If it's okay can you close this and merge the other one?

[Enzime]

To squash the commits on this PR, the easiest solution would be while rebasing them on top of the latest master

First you need to make sure you have this repo as a remote:

$ git remote -v
upstream  https://github.com/LnL7/nix-darwin.git (fetch)
upstream  https://github.com/LnL7/nix-darwin.git (push)

The name can be anything, and if it’s not there you can use git remote add upstream https://github.com/LnL7/nix-darwin.git

$ git fetch
$ git checkout homebrewcheck
$ git rebase -i upstream/master

And in the rebase editor you can change all the pick commands except the first to squash

[Enzime]

LGTM

Thanks for the contribution