"snap run" doesn't support not installed packages

[KAYOver]

As .snap package costs a lot of space we need ability to store it on removable drives. Now it's impossible to run they from there. Only way to run .snap is to mount it running "sudo snap install --dangerous <.snap location>" command, that copy package into '/var/lib/snapd/snaps' and maybe do some other things.

In theory, it's need to be '(sudo if need) snap run *--dangerous <.snap location>*' here, that will temporary create symlink to my .snap in '/var/lib/snapd/snaps', mount and then run it. If there is many apps in one package, it’s can be done to have exceptions for "one app" .snap’s and for .snap’s that have "main_application: *app name here*" in snapcraft.yaml. Otherwise "Cannot run, this package contains many applications (*names here*) and don't have a "main_application" option defined. Install it instead? [Y/n]" message should be displayed.

[Oliver Grawert (ogra)]

moved to the proper upstream projects

[Zygmunt Krynicki (zyga)]

There are many details that would be required to make this work. I won't go into this unless there's a developer committed to work with the core team to design and implement the feature. Please don't see this as a "wont fix", it's just a statement that we're not working on this at the moment.