As announced by Stefan Bidigaray:
GNUstep core packages for Slackware 12.1 are now available at:
* Make 2.0.6
* Base 1.16.3
* GUI 0.14.0
* Back 0.14.0
* GWorkspace 0.8.7
Packages have been built atop a full (minus KDE) Slackware 12.1 installation.
GNUstep-back is now shipped with both libcairo and libart support. Libcairo is the default backend. Libart can be "turned on" by setting your GSBackend to "art" in your defaults.
More packages will become available as I run into more time, stay tuned!
If you run into any problems installing any of these packages, feel free to contact me.