Swedish language is available since version 2.40, but is not included in ebuilds, other than version 9999. I emerged the 9999 version and Darktable changed to Swedish. Some strings in the GUI still needs to be translated. I vill fix that upstream.
If you look at the po/ directory of the darktable-3.2.1 tarball, you will find localisation files for the following languages: de, es, fr, he, it, pl, pt_BR, ru, sl. This is exactly the same list as the one present in darktable-3.2.1 ebuilds. We will add support for Swedish, as well as other languagues that both are currently and might in the future be present in the Darktable Git repository, once upstream has deemed them mature enough to be included in release tarballs.
