I burn this ISO:

devuan_jessie_1.0.0_amd64_NETINST.	

It's only 227 GB, cool!

Insert the installation CD,

Choose from the menu: Advanced options > Expert
(don't fret, easy peacy).

Go thru the installation as always, when you get the option of choosing desktop
environments, servers etc, untick all options.

IOW, you install nothing from this page, all you got are the base apps you got
by default at the beginning of the installation, put GRUB on the mbr, finish the
installation, reboot.

Come back, at the prompt become ROOT, do:

# apt-get update && apt-get dist-upgrade

Install what you like, (don't forget xorg)

In my particular case:

# apt-get install xorg firefox-esr sudo ufw gpm firmware-linux firmware-realtek locate localepurge

Next,

# apt-get install jwm gmrun menu lxterminal xfe mirage hexchat scrot numlockx unclutter nvi inxi

# ufw enable

# reboot

Come back configure jwm

voilà !

Happy trails,

macondo123 aka macondo