(Question) Is this an alternative to Lutris and Bottles?

Hey, this project in no way competes with Lutris and serves somewhat different goals.

It is similar to Bottles in the sense that both have a notion of a "unit" (bottle) and manage your wine prefix, isolated per unit, and can install some hardcoded components for gaming (vkd3d-proton, dxvk). The main difference is Bottles is a GUI tool, and brie is a CLI tool in which the configuration of your units is stored in a YAML text file. This tool also has some additional features - it can monitor your YAML file and add "units" to Steam as non-steam Games, and manage them in Sunshine config for game-streaming
Lutris is substantially more though, it has a notion of different runners which aren't necessarily wine. Also in my opinion Lutrises main selling point is the database which instructs Lutris to automatically install things with winetricks into your wine prefix, configures registry keys etc, to make running well-known software as seamless as possible. Also IIRC it integrates with some shops for downloading games. brie on the other hand is much simpler - "units" are either wine or just native executables, all configuration of your prefix is done by you (declaratively in the YAML file), no integration with shops (for that I would suggest heroic)

What this tool does:

You have a single YAML configuration text file where you declare everything
This tool downloads and caches wine runtime (tkg or ge-wine), and components (see README); prepares your prefix by installing stuff you've declared in YAML and runs your game/software. This whole setup can be useful for you if you want to use specific wine/vkd3d/dxvk/... for your software, or want to have a simple way to declare in one place multiple wine prefixes for different versions of these libs, and do some comparison between them.
You declare units in one place (YAML file) and the watcher tool can update your sunshine config and steam non-steam game list

nikarh / brie