PF4Public

> retain them just in case someone might need an older (but signed) build That is a good point

> INFO: Cloning chromium source: 131.0.6778.264 You're cloning older version, that's why patches do not apply.

Try following the building instructions from the README: https://github.com/ungoogled-software/ungoogled-chromium-windows/blob/master/README.md#building-1

It is probably doable, but requires lots of patching. I tried at some point in time, but gave up. See here: https://github.com/PF4Public/gentoo-overlay/issues/26

Unfortunately this repository is not very active and might be outdated. Perhaps the information in https://github.com/ungoogled-software/ungoogled-chromium-debian/pull/328 could be helpful for you.

By any chance, have you noticed at which version this started to occur?

This does look similar to your issue: https://github.com/element-hq/element-desktop/issues/1853 Could you mention there that it works with keytar manually installed?

> current ebuild only builds rust parts in online mode I tried making rust parts to build offline, but gave up as it is a packaging nightmare (to be honest,...

They made keytar a hard dependency. Could anyone test if it solves the issue?

I'll assume it is OK now