Since we discussed in irc also about the installer problems (i have,
but others, at least partly share) i thought it might be a good idea to
describe exactly what i did and tried:

I use the installer cd

I used both, graphical and text mode installer, so far no difference.

I chose several language layouts (precisely, de_utf8.de, fr_utf8.de,
it_utf8.it), defined keyboard as de, loaded all components from the
installer cd, formatted the hd manually, fresh formatting the sda1 ext4
as / with boot flag enabled, keeping sda4 as ext4 /home (to keep my
home from a previous crashed installation).

Network automatically configured via wireless (router inhouse)

I point to ascii

root with passwd, & user

Then installing the base system i'm prompted with an error, which is
always the same:

error processing rsyslog (--configure)
dependency problems

rsyslog depends on libjson-c2 (>= 0.10); however:
Package libjson-c2 is not installed

So far for the error.

Since i did succeed installing devuan on another machine (with terrible
overheating problems though) with amd graphics, may be it's worth to
note that the machine where i'm unable to install devuan is:

Sony-Vaio Core 7, nvidia graphics, 16 gig ram, 750 gig hd

(The netinst.iso fails equally).

----

I could install from the same iso, with some problems also, to qemu and
virtualbox running on a manjaro openrc linux.

I could install devuan using the instructions of devlfanboy for a
minimal install on github - but trying to add more software and a
desktop, i ran into big, unsolvible problems at least for me ("fsck
exited with code 8" - during the boot; googling for that error results,
that might be a systemd related problem - which i believed to not be
able to deal with).

That's it from my side. Sorry for being unprecise, but i'm not so linux
skilled.