I wonder why fvwm does not provides x-window-manager. The following is copy and paste from deslect:
dselect - recursive package listing mark:+/=/- verbose:v help:? EIOM Pri Section Package Description **_ Opt x11 twm Tab window manager *** Std x11 xfree86-comm X Window System (XFree86) infrastructure __ Opt x11 qvwm Windows95 like window manager for X Window System __ Opt x11 icewm A wonderful Win95-OS/2-Motif-like window manager __ Opt x11 lwm Lightweight Window Manager __ Opt x11 sawmill a highly configurable window manager for X11 __ Opt x11 icewm-gnome A wonderful Win95-OS/2-Motif-like window manager twm installed; purge (was: install). Optional xfree86-common suggests twm or x-window-manager xfree86-common suggests twm or x-window-manager twm provides x-window-manager
