chore: add nix flake

[pedrohba1]

kept having deps missing often, this will make a reliable setup every time

[suchapalaver]

kept having deps missing often, this will make a reliable setup every time

Is it best practice to check the flake.lock into VC?

[pedrohba1]

kept having deps missing often, this will make a reliable setup every time

Is it best practice to check the flake.lock into VC?

Lock files can pin different versions if they are generated at different times, so having the lockfile pinned to in exact hashes helps. If the flake.lock is not there, eventually someone might have to troubleshoot again once in a while. Not the end of the world, but can be annoying.

Now that you mention it, if there is a flake.nix here we should probably add this too:

- uses: DeterminateSystems/update-flake-lock@v24

to eventually catch updates, acts like a "dependabot" sort of it seems