glsa-apply makes it easier to check for and apply security updates by wrapping glsa-check in a way that makes it relevant to the system it's run on.
Looks pretty much identical to `glsa-check --fix affected`, or do I miss something?
No, you're right. I wrote this before the affected target existed, and I haven't touched glsa-check directly since I made this so I didn't notice when it became equally useful.