1) Slackware still ships the old 0.8.8 release of compiz that was released back in 2011. The project has recently been picked up and is being actively maintained by the compiz-reloaded team. You can still use the 0.8.8 version of the compiz that ships with Slackware with the companion packages since there has not been any ABI changes to the code. But there is a good chance you will run into stabilty issues if you do, so it is HIGHLY recommended you use the version of compiz that matches the companion packages. Because you will be replacing a stock Slackware package the SlackBuild is not hosted at www.slackbuilds.org. You can download the SlackBuild from the link below. https://www.dropbox.com/s/w0g37m2vvcxblky/compiz-0.8.12.3-SlackBuild.tar.gz This SlackBuild is based off the 14.2 stock Slackware SlackBuild so you shouldn't run into any problems. If you do use this version of compiz you will need to blacklist compiz in your /etc/slackpkg/blacklist file to keep slackpkg from reverting the package back to 0.8.8 2) Compiz now has basic support for the MATE desktop. You will have to install MATE before you install compiz for support. The MATE slackware project website is located here https://mateslackbuilds.github.io/ 3) The compizconfig-backend-kconfig4 package has been removed from the project so if you are upgrading from a previous version you will want to remove this package. Also compiz-plugins-unsupported has now been renamed to compiz-plugins-experimental so you will need to remove compiz-plugins-unsupported before you upgrade to the newest packages. 4) The install order has compiz listed twice. libcompizconfig depends on compiz, but compiz has some extra window decorator related features that depend on libcompizconfig. So if you want these extra features you will have to recompile compiz again AFTER you build and install libcompizconfig. This is not required it is just an option if you want to do it. 5) After you install compiz and the companion packages you will need to launch CCSM and enable "Move", "Resize Window", and "Window Decorations" before you start compiz. This way you can manage your windows. After you enable those three options you can start compiz and customize to your liking.