Warnung: Kann "boost-libs<1.66.0" nicht auflösen (eine Abhängigkeit von "freecad-oce")
:: Das folgende Paket kann aufgrund nicht auflösbarer Abhängigkeiten nicht aktualisiert werden:
freecad-oce
Fehler: Konnte den Vorgang nicht vorbereiten (Kann Abhängigkeiten nicht erfüllen)
:: freecad-oce: benötigt boost-libs<1.66.0
To be honest i don't know what is the current situation regarding FreeCAD on rolling releases such as Arch. Mainly due to Qt5 situation and availability of dependencies. Maybe another Arch user will have more insight on that.
What you can try out is the AppImage option and see how that goes:
Warning: Unable to resolve "boost-libs <1.66.0" (a dependency on "freecad-oce")
:: The following package can not be updated due to unresolvable dependencies:
freecad-oce
Error: Could not prepare the operation (Can not fulfill dependencies)
:: freecad-oce: needs boost-libs <1.66.0
Odd, are you sure you got the right package? Apparently the 0.17-1 package should be built with opencascade-7.2 rather than oce.
Second:
Freecad isn't in the Arch linux (binary) repsoitorys in anymore. Dropped for for a week or two. Is your installation attempt older or do you not using Arch Linux but some derivate?