permissions snap pour le répertoire personnel d'Octave

J'ai installé le octave hier, mais quand je lance octave il n'a pas les droits d'accès à mon dossier. $HOME . Comment activer les permissions ?

ctaggart@rustasia:~/octave-add$ octave
octave: X11 DISPLAY environment variable not set
octave: disabling GUI features
GNU Octave, version 5.1.0
Copyright (C) 2019 John W. Eaton and others.
This is free software; see the source code for copying conditions.
There is ABSOLUTELY NO WARRANTY; not even for MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  For details, type 'warranty'.

Octave was configured for "x86_64-pc-linux-gnu".

Additional information about Octave is available at https://www.octave.org.

Please contribute if you find this software useful.
For more information, visit https://www.octave.org/get-involved.html

Read https://www.octave.org/bugs.html to learn how to submit bug reports.
For information about changes from previous versions, type 'news'.

warning: load_path: .: Permission denied
octave:1> ls
ls: cannot open directory '.': Permission denied

Après avoir lu https://docs.snapcraft.io/interface-management Je pensais que ça allait marcher :

sudo snap connect octave:home :home
error: cannot resolve connection, slot snap name is empty

Les détails du cliché :

ctaggart@rustasia:~/octave-add$ snap info octave
name:      octave
summary:   Interactive programming environment for numerical computations
publisher: GNU Octave (octave-snap)
contact:   snap@octave.org
license:   unset
description: |
  GNU Octave is a high-level interpreted language, primarily intended for
  numerical computations. It provides capabilities for the numerical
  solution of linear and nonlinear problems, and for performing other
  numerical experiments. It also provides extensive graphics capabilities
  for data visualization and manipulation. Octave is normally used through
  its interactive command line interface, but it can also be used to write
  non-interactive programs. The Octave language is quite similar to
  Matlab so that most programs are easily portable.
commands:
  - octave
  - octave.octave-cli
snap-id:      AC5zoejRZUR3QS4V1ZCktZ2yUUz3ubRb
tracking:     beta
refresh-date: yesterday at 05:54 UTC
channels:
  stable:    –                          
  candidate: –                          
  beta:      5.1.0 2019-06-13 (5) 192MB -
  edge:      5.1.0 2019-06-13 (5) 192MB -
installed:   5.1.0            (5) 192MB -

Et des connexions :

ctaggart@rustasia:~/octave-add$ snap connections octave
Interface       Plug                   Slot  Notes
desktop         octave:desktop         -     -
desktop-legacy  octave:desktop-legacy  -     -
home            octave:home            -     -
opengl          octave:opengl          -     -
pulseaudio      octave:pulseaudio      -     -
unity7          octave:unity7          -     -
wayland         octave:wayland         -     -
x11             octave:x11             -     -