From the available desktop options in the installer (GNOME, KDE, XFCE, minimal) I picked XFCE, and then removed it completely because it was X11 based and installed sway instead. The searching for patterns is needlessly difficult. There is tab completion for package names but I know no easy way how to discover patterns. Yes, later I learned there is patterns-sway-sway, and it indeed does pull in Mesa. However, sway is user of GLES2, and to use GLES2 you need a GL driver, and none is pulled in by installing the interface library.