/usr/share/xsessions/stumpwm.desktop is in stumpwm 2:0.9.9-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | [Desktop Entry]
Encoding=UTF-8
Name=Stumpwm
Comment=Tiling, keyboard driven Common Lisp window manager
TryExec=stumpwm
Exec=stumpwm
Type=Application
[X-Window Manager]
SessionManaged=true
|