slackpkg+-1.8.1-noarch-1alien.txz has been added to /extra. Previously avoided due to potential breakage from third-party repos (e.g., incompatible shared libraries), it’s now included as alienBOB has fixed known bugs. Use with caution: third-party packages can impact your system. Thanks to phenixia2003, zerouno, and alienBOB for their contributions and maintenance!
(Resume from https://mirrors.kernel.org/slackware/slackware64-current/ChangeLog.txt)