Not working with pylsp installed from Snap in Ubuntu 18.04

I'm using ide-python with Atom 1.58.0 and Ubuntu 18.04.
I've installed Python language server from the Snap store, the executable pylsp is correctly addressed from a terminal (e.g. if I do `pylsp -h` or `pylsp -v`).
The version of pylsp should be 1.0.1.

However, when I start Atom I get the error "Unable to start the Python language server" etc.

In the ide-python settings the executable string is the default (`pylsp`).

Am I missing something?
Is it supposed not to be working this way? (I'd prefer not to use pip, to not have to take care of updates).