System Info
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Sweet Home 3D version 6.5
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Hi

I have just installed snapd and then used it to install sweethome3d on a centos 7 system.
(
yum install snapd
snap install sweethome3d-homedesign
)

However it seems snap is a sort of VM on it's own and does not install things in a conventional way.

I was wondering if someone could exlain how I can use my application installed by snap.

I found I can run sweethome3d OK by running:
/var/lib/snapd/snap/bin/sweethome3d-homedesign

However it looks like it has creates a virtual file system and mounted it and the only files and directories I can see are in that file system

Looking at the snap mounted systems I see:
$ mount | grep sweet
/var/lib/snapd/snaps/sweethome3d-homedesign_13.snap on /var/lib/snapd/snap/sweethome3d-homedesign/13 type squashfs (ro,nodev,relatime)
proc on /run/snapd/ns/sweethome3d-homedesign.mnt type proc (rw,nosuid,nodev,noexec,relatime)

$ df | grep loop
/dev/loop0 33152 33152 0 100% /var/lib/snapd/snap/snapd/11588
/dev/loop1 56832 56832 0 100% /var/lib/snapd/snap/core18/1997
/dev/loop2 136064 136064 0 100% /var/lib/snapd/snap/sweethome3d-homedesign/13

And when I run sweethome3d and try to open a file all I can see are the contents of /var/lib/snapd/snap/core18/1997 and below, which is used as the root of the snap fs.
The directories here are:
$ ls /var/lib/snapd/snap/core18/1997
bin boot dev etc home lib lib64 media meta mnt opt proc root run sbin snap srv stdout sys tmp usr var writable

Additionally if I try to save a file (to, for example, writable) I get a read only file system error (since it's mounted as read only I guess)

Does anyone know how I can install sweethome3d using snap such that I can write files and access directories on the main file system ?

Sweet Home 3D is a GUI application. After you installed the snap, it should be directly available in your desktop environment. See Commands and aliases in snap docs.

> it should be directly available in your desktop environment
Mmm. If you mean by that it should appear as an icon under 'Activities'. or exist as an entry in /usr/share/applications then it has not been added to that.

I can run it from the command line like this:
/var/lib/snapd/snap/bin/sweethome3d-homedesign

But as mentioned I cannot use it.

Maybe something went wrong with the install. I'll try uninstalling and re-unstalling.

Yes.

Is there /snap/bin/sweethome3d-homedesign?

Another thought. You may try the flatpak instead of snap. Flatpaks often have a better chance to work on Fedora-based distros than snaps as Flatpak technology was developed at Red Hat. Or just install the upstream .tgz package.