I found a way to "hack" it somehow, so for reference and all, who may have similar problems I will post it here.
Also all hints are welcome.
http://micro-corner.gilhad.cz/blog/2019/2019-08-11-nikola-making-projects-with-shared-resources.htmlBasically I create symlink subdirs like listings, images, ... under /posts/
AVR/beginers/crosscompile/ which points to respective directories in /listings/blog/
AVR/beginers/crosscompile/ , /images/blog/
AVR/beginers/crosscompile/ ... and also create same structure under /files, where those symlinks points to respective directories under /output
Needs delete symlinks in
output after
nikola build fails and run
nikola build again, but it is not such big deal, as managing all long paths in all posts, especially, if I want to move them around for better organisations sometimes