There have been a few topics about that before over the years, e.g. these two:
viewtopic.php?f=1&t=14788
viewtopic.php?f=16&t=15855
As mentioned there:
mdyde wrote:Sorry -- at this point in time we don't have plans for porting Hauptwerk to Linux.
We do of course appreciate that there are a few people who prefer to use Linux, and who do have the level of technical expertise to be able to set up and use it for audio/MIDI, but please understand that porting to any new platform, and then subsequently maintaining and supporting it, are very, very major undertakings (it most certainly isn't a trivial task of 'flipping a switch'!) -- it costs a lot of time/work/money, and we have finite resources available to us. We have to prioritise what can do within those resources.
Perhaps one day in the longer-term future that may change, but at this point in time we still have no plans for a Linux port, I'm afraid. (Also, the iLok system, which is used to licence Hauptwerk v5+ and sample sets is not available for Linux.)