INSPIRE sources are to be installed after the Invenio sources.
You can customize some things in config-local.mk, for example on Debian GNU/Linux, use:
$ cat config-local.mk INSTALL = install -g www-data -m 775
To install a small INSPIRE demo site from scratch, you can use for example `inspire-recreate-demo-site' helper devscript, see instructions at:
https://github.com/tiborsimko/inspire-devscripts#inspire-recreate-demo-site
You may be interested in having an RSS feed update a box on your homepage. If so, edit feedboxes/inspire_update_feedboxes.py with a valid FEEDS list, then install it somewhere and call it with the -d flag every ten minutes or so. It will rely on webcoll to regenerate the home page, so it's not really sensible to run it more often than webcoll runs.
Required Python packages can be installed by running:
$ pip install -r requirements.txt