sK1 Project has been started 7 years ago as a Skencil fork. Unfortunately 5 years ago Skencil development has been frozen. Almost all distros have excluded Skencil packages because it is not possible to compile correctly the project code against tk8.5/8.6
Working Skencil is important for further sK1 development. Also some users have asked for Skencil revitalizing. Therefore we have backported a lot of fixes from sK1. Details and Scencil packages you can find follow link.