Perhaps I'm doing it wrong but:

pkcon install sailfish-maps
Resolving [ ] (0%) Package not found: sailfish-maps
Command failed: This tool could not find any available package: No packages were found


And While its not really in active development, the last fix I saw was 2.1.3 and it seemed rather minor :

sailfish-maps

Updated : 1.1.27-10.41.1.jolla -- 1.1.28-10.43.1.jolla

[sailfish-maps] Avoid unnecessary notification category file.
sailfish-maps-l10n

Updated : 1.69-10.35.1.jolla -- 1.73.1-10.39.1.jolla
[l10n] Branched sailfish-maps from version 1.73
[l10n] Commit from Jolla localisation: 89 of 89 strings translated (0 need review).

[tpl] translation templates update for 1.1.28


It seems like its still the best option around. WhoGo looks promising and all, but it's just not ready yet!