Re: Wiki : Octave for GNU/Linux

[Andrew Janke]

On 2/10/19 5:41 PM, Tatsuro MATSUOKA wrote:
> o MATSUOKA wrote:
>
> > >   $ sudo flatpak run org.octave.Octave
> > >
> > >
> > >   octave:1> pkg install -forge -verbose control
> > >   warning: creating installation directory /app/share/octave/packages
> > >   warning: called from
> > >       install at line 30 column 5
> > >       pkg at line 437 column 9
> > >   error: could not create installation directory: Read-only file system
> > >   error: called from
> > >       install at line 33 column 7
> > >       pkg at line 437 column 9
> >
> > I think the problem here is that you are running as root. Don't use sudo
> > to run Octave.
> >
> > You can install flatpak applications system-wide or per-user.
> >
> > System-wide:
> >
> >      sudo flatpak install flathub org.octave.Octave
> >
> > Per-user:
> >
> >      flatpak install --user flathub org.octave.Octave
> >
> > But you should always run it as a normal user:
> >
> >      flatpak run org.octave.Octave --gui
> >
> > The problem with root is that Octave's pkg function assumes packages
> > will be installed system-wide if root is running Octave. But in flatpak
> > the application root directory /app is read-only by design.
> >
> > >   The control package is very popular package.
> > >   (I use signal package and signal package requires control package)
> >
> > After fixing the above you should definitely be able to install control
> > and signal easily as a normal user.
> >
> > Does that help?
>
>
>
> Perhaps I have made some mistakes and could not run flapak octave without sudo.
> I remove ~.local/share/flatpak and reinstall octave.
> I can launch flatpak octave without sudo and can install control package.
>
> Thanks
>
> Tatsuro

I've been using flatpak installs lately too. One thing I've learned: you 
need to either do everything in flatpak as root (sudo) or nothing as 
root. Mixing the two doesn't work.

Here's what I am doing on Ubunu Xenial to get flatpak Octave 4.4 installed:

flatpak remote-add --user --if-not-exists flathub 
https://flathub.org/repo/flathub.flatpakrepo
flatpak install --user -y flathub org.octave.Octave

No sudo on either of those commands. And it seems to matter for the 
remote-add, too: maybe you did the remote-add with a sudo previously?

If you want to see details on how to do this in an automated context, 
it's in https://github.com/apjanke/octave-control-testing-2019-01-23 in 
the .travis.yml and dev-tools/install-octave-ubuntu.sh files.

Cheers,
Andrew