Hard 
on hook. Fail on CI to enforce what you want
chrismccord
Creator of Phoenix
ca1989
That is a valid point.
Didn’t think about that because we are a few and with the same setup.
I would agree with you.
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ca1989
Will-W
I agree with this. My approach is simply just to have our CI pipeline runs mix format --check-formatted.
It is then up to the individual developer to choose how to ensure that all the code they push is formatted. Most of our devs use VS Code and have “format on save” configured, one dev uses vim and simply does mix format && git add -p whenever they’re setting up a commit.
Where are you hosting your code? It can be very simple to set up CI (at least a basic one that checks formatting and runs tests), and I can probably suggest a simple way of doing it based on where your code lives.
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wevtimoteo
At SourceLevel we used a pocket project (GitHub - sourcelevel/auto-formatter: Mix escript to run mix format on precommit git hook · GitHub) to learn escript by running mix format on precommit Git Hook, since our GitHub Actions pipeline runs mix format --check-formatted.
Nice to know that there are a lot of tools built using Elixir that manages Git Hooks!
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