unity - allow snap apps to access data from outside of container - Ask Ubuntu


i installed libreoffice snap. program works fine i'm locked in snap container. trying open office attachment in evolution results in:

access /home/user/.cache/evolution/tmp/evolution-user/document.xlsx denied.

i idea snap packages self contained , secure, in order work within system other packages installed .deb should granted access snap. how can without compromising security?

update: in response user spktkpkt, when list 

$snap interfaces  slot                     plug :bluetooth-control       - ... :gsettings               emacs-tealeg :hardware-observe        canonical-livepatch :home                    emacs-tealeg,libreoffice

i can see libreoffice connected :home but, maybe because document in hidden folder (.cache) can't accessed.

note home interface can access non-hidden files described on interfaces reference page of snap:

[home interface] can access non-hidden files in user's $home , gvfs mounted directories owned user read/write/lock.

i have not used yet, there should interface communicate $home directory. here information interfaces , here list available interfaces.


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