How do I display Search API Facets and Openlayers Proximity search in one view?
The "facets block" type that drunken monkey mentions on the issue you link to, is simply a type of views "Display", you can see below where you add one:

I haven't used the proximity filter, nor much of Search API, so I can't really give you an answer with better details. It seems to be like drunken monkey has actually answered the question in the issue queue, and perhaps you need to specify more precisely where you have a problem, to get better help.