You even get a free steam key for each purchase on factorio.com, no need to repurchase

why not use steam? I know steam has drm and isn’t free as in free speech, but it’s many times more practical. 2.0.8 is out now, and presumably there will be many updates a week for the foreseeable future, and updating by hand or with a script just to get a drm-free version in nixos seems a bit impractical to me.