Lagom covers many libraries, including various ones used in the Browser/LibWeb (e.g. LibJS, LibWasm), but LibWeb itself is not part of Lagom and doesn't currently build or run on Linux. It's absolutely possible, but no one is working towards it specifically at the moment. There's a list of things needed to make that happen here: https://github.com/SerenityOS/serenity/issues/10968

It seems that Lagom ports AK and LibCore, the core C++ library components that Serenity is using instead of the STL, to other platforms like Linux.

This may be useful for devs who want to entirely ditch the STL in favor of a much cleaner and ergonomic library.