Code review comment for lp:~michihenning/unity-scopes-api/scope-cache-dir

> https://wiki.ubuntu.com/SecurityTeam/Specifications/ApplicationConfinement but
> iiuic Qt itself was patched to build the directory based on a few envvars. Imo
> we should just do the same, afterall the path has to be "prefix + scope_id",
> and the prefix can be passed as an envvar - it's not like a single process can
> be both unconfined and leaf-net at the same time.

I'm still not happy about this, as I mentioned earlier: if we have multiple instances of the run time in a single address space, the setting will be wrong for all but one of them.

But getting the value into the scope is just a side-issue. The real problem is that I don't know how to figure out what to set "prefix" to. It seems I can't even reliably get at all the manifests for pre-installed, OEM, and click scopes.

Jamie, instead of having something like $HOME/.local/share/unity-scopes/leaf-net/<scope_id>, could we get rid of the "leaf-fs"/"leaf-net"/"aggregator"/"confined" sub-directory?

If so, we could just make it $HOME/.local/share/unity-scopes/data_home/<scope_id>.

The core problem here is that I don't know which confinement profile belongs to what scope ID, so I don't know how to set the path correctly. If we have a path that doesn't change depending on the confinement profile, the problem would go away because the prefix would be independent of the confinement type.