cantor does not detect the maxima backend

[bp]

Installing cantor-backend-maxima is a no-op. Maxima is not a session you can start and, unlike Sage, Maxima does not appear in the Cantor configuration screen.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: cantor-backend-maxima 4:17.12.3-0ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-31.33-generic 4.15.18
Uname: Linux 4.15.0-31-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.3
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Aug 21 15:44:47 2018
EcryptfsInUse: Yes
InstallationDate: Installed on 2017-08-14 (371 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170814)
SourcePackage: cantor
UpgradeStatus: Upgraded to bionic on 2018-03-18 (155 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Rik Mills (rikmills)]

This description for the backend package says:

 cantor-backend-maxima: Maxima backend for Cantor

     Cantor is an application to allow you to you use your favorite mathematical
     applications from within an elegant worksheet interface. It provides dialogs
     to assist with common tasks and allows you to share your worksheets
     with others.
     .
     This package provides the backend for using the Maxima Computer Algebra System
     (http://maxima.sourceforge.net) in Cantor.
     .
     NOTE: currently this package only contains the maxima icon as the backend
     itself is broken with the current version of maxima. The backend will be
     restored once an upstream fix is available.
     See KDE BUG: https://bugs.kde.org/show_bug.cgi?id=379404

This should be re-enabled shortly in 19.04, but testing will be desirable.