Add support to symlinked directories for c8y config

[S0NN1]

OS details

• c8y version: 2.52.3
• OS: macOS 15.7 24G222 arm64
• Host: Mac16,7
• Kernel: 24.6.0
• Shell: zsh 5.9
• Terminal: ghostty
• CPU: Apple M4 Pro

Description

if ~/.cumulocity/ is a symlink the saved sessions are not working, see below:

~
❯ ls -lah .cumulocity
lrwxr-xr-x@ 1 sonninni  staff    52B Oct  6 14:46 .cumulocity -> /Users/sonninni/workspace/dotfiles/linux/.cumulocity

~
❯ set-session
2025-10-06T14:48:06.043+0200    ERROR   commandError: no sessions found
2025-10-06T14:48:06.044+0200    ERROR   commandError: exit status 100
Set session failed

~
❯ ls -lah .cumulocity/
total 24
drwxr-xr-x@ 6 sonninni  staff   192B Oct  6 14:43 .
drwxr-xr-x@ 4 sonninni  staff   128B Oct  6 14:22 ..
-rw-r--r--@ 1 sonninni  staff   169B Oct  3 09:39 .key
drwxr-xr-x@ 4 sonninni  staff   128B Oct  6 09:44 activitylog
-rw-------@ 1 sonninni  staff   812B Oct  6 14:31 REDACTED.json
-rw-------@ 1 sonninni  staff   810B Oct  6 14:31 REDACTED-2.json

If I copy the directory the CLI is able to read the sessions.
It would be good to add support for symlinked directories, so that the user can track them with version control tools (ofc after removing sensible data)

[reubenmiller]

I'm surprised that this doesn't work out of the box, so I will definitely look into it, however you can already control the session folder by setting the C8Y_SESSION_HOME env variable as mentioned in the docs.

So the following should work to use a custom session home location.

export C8Y_SESSION_HOME=/Users/sonninni/workspace/dotfiles/linux/.cumulocity
c8y session list

[reubenmiller]

I've merged a change that should now support it, though I'll see when to cut a new release.