Ehlo Znavko,

znavko@disroot.org wrote:
> oops, not sure it is intel.

SiS[0] is not Intel.  They're a Taiwanese company whose graphics 
division later became the ill-fated XGI for a while.

Takes me back…  :-)

> here i've placed driver https://gitgud.io/znavko/sis771

As was to be expected, that's not free software (or even open 
source) (or even source).

You're probably breaking the law by even hosting that link: 
there's no licence to be found anywhere, let alone one allowing 
redistribution.

This is why proprietary software sucks.

> Can anybody write package definition ? 

Considering the fact that this is a 10-year-old binary blob for 
use with >10-year old X.org, that it would be illegal to host the 
origin unless you find a licence permitting that (unlikely), and 
that it has 0% chance of ever making it into Guix proper, you're 
very unlikely to find a volunteer to do this for you.  And this 
mailing list or any other Guix project channel would not be an 
appropriate place to find them.  Sorry.

On a more positive note: have you looked at

  https://aur.archlinux.org/packages/xf86-video-sisimedia/
  (or https://aur.archlinux.org/packages/xf86-video-sis/)?

As you can see by the number of patches at that first link, 
keeping such old hardware working with modern software presents 
plenty of challenges—without adding those of binary blobs :-)

T G-R

[0]: https://en.wikipedia.org/wiki/Silicon_Integrated_Systems