Nix "nightly" build

[thomascft]

Summary

I've created an action that does a scheduled build of WezTerm with the Nix flake, and pushes the outputs to a binary cache.

The Problem

I find myself having to build WezTerm from source on occasion when Hyprland releases updates. The version of WezTerm currently in nixpkgs doesn't include various Hyprland/Wayland bugfixes because there hasn't been a release in a while.

My Solution

We can push to a Cachix with a scheduled build of WezTerm using the flake. People can add this binary cache to their configurations to avoid building WezTerm from source if they're using the flake. There's a couple more things that need to be done before this action will work though.

• Setup https://wezterm.cachix.org (This is a super quick process, and the login is just read email access for your GitHub account.)
• Generate an auth token for that cache and add it to WezTerm's repo secrets so it can be used in the GitHub action

I've got a working version here https://github.com/thomascft/wezterm-nightly-flake/blob/main/flake.nix. The actions are a touch more complicated because I wanted nightly lockfile updates as well.

Here are some examples of Cachix being used for other projects

• Neovim
• Firefox
• Hyprland

I've also added some basic install documentation for Nix/NixOS which can be improved on if you'd like.

[wez]

Thanks for this; I've set up a cache and added the auth token to the repo secrets.
I've added a suggestion for the public key portion.
Is there anything else we need for this before I merge?

[thomascft]

Everything looks great. Thanks!

[wez]

Thank you!