OpenMMM automatically detects the location of the data files directory within the archive, as well as optional directories (providing a prompt if multiple are found) See the readme on Gitlab for more details and installation instructions. So starting with a small script I found on Github (, author never responded to my pull request), I slowly built on it until I had a tool that could in a single command install any mod on the list with minimal manual configuration. Unfortunately there seems to be a lack of both native Linux mod managers, as well as mod managers that actually install mods the OpenMW way.
Faced with the task of installing the large list of OpenMW-compatible mods on (because why wouldn't you play OpenMW with hundreds of mods installed?), I did not like the idea of doing everything manually.