The archive contains a port of
SeaMonkey
as well as the therefore needed, but deprecated port of lang/python27; Note that
lang/python27 is just a build dependency, and can be removed afterwards.
Updating from version 2.49.5 or earlier means "no way back" (or: "use your backup")
as the user directory isn't backward compatible.
For a faster build process you may want to check if the following packages are installed on your machine:
cmake gmake gtk2 gtk3 llvm13 rust-cbindgen; But consider that pre-installing
those dependencies will set them to a "non-automatic" state, while the build process would leave
them with the "automatic" flag; So you've got to take care of getting rid of them again by your
own – a simple pkg autoremove won't do that for you…
If you don't want the english user interface take a look at the available
language packs.
To get the spellchecker up & running you have to
install a dictionary addon
(don't forget to select that dictionary also in the preferences).
And if you're looking for a working version of "uBlock Origin" –
here it is.