When I try to install ( from http://maemo.vivaphp.net/pool/ )

Maxima or wxwidgets or wxMaxima ,
I get the error "Incompatible application package" from the App Manager.

( N810 with OS .43-7 )

A dependancy problem ?
Please, what am I missing ?

( Also, calling this repo, as suggested,
Ananukin
http://maemo.vivaphp.net
/pool/
in the App Manager
showed only one app. but not these. )

Any help appreciated, this app. looks so promising !