The MediaWiki installation guide is in a very sad state, please help
make some sense out of it.
<https://www.mediawiki.org/wiki/Thread:Project:Current_issues/Installation_guide_consolidation>
In this thread I show it's composed of
* 7 logical steps,
* 8 supposed main manual pages,
* 27+10 subitems,
* countless platform-specific instructions,
all very loosely coordinated (to use an euphemism).
Nemo