Lemmy is licensed under the AGPLv3. I don't want to rely solely on my own legal interpretation of the license, so I'm wondering if anyone has any explicit knowledge on the matter.
As an aside, am I correct in assuming that, if someone does make changes to the source code, they must host, and link to it?
EDIT (2023-09-27T22:22Z): I am just now seeing that at the bottom of a Lemmy instance's site, there is a link that says "Code". It appears that this is handled automatically.
I'll be the heretic here, but so far as I know you are only required to make source available when you distribute binaries. And for that matter, it doesn't even have to be online just available upon request unless you're using a derivative GPL that added online access as a clause.
I highly doubt the users of a web interface are required to be given access to source. There are multiple GPL-licensed web servers (I am well aware Apache is not btw) and I've never seen one embed a code link on every page.
Tl;Dr: Lemmy does it, but I believe it's not required. Modify away if you so choose.
Lemmy is licensed under AGPL https://choosealicense.com/licenses/agpl-3.0/
AGPL has a clause that basically says "network access counts as distribution". If you make modifications to a AGPL code which users can connect to, users should be able to have access to the source code with your changes.