Add dbus warning

[ikreb7]

I think it would be nice if we give them a solution if the dbus python api is missing. What is your opinion?

[twoln]

That looks great, but perhaps we should ask the users whether they would like to install the package or generate the wpa_supplicant config file? Perhaps before we suggest installation we might try if nmcli is available and if so just use that. This would require some more code rearrangement, in fact we might start with searching for nmcli and only if we do not find it go for the dbus interface. Still this looks like a bit of a project.

[leon-richardt]

Yes, something should definitely done about this. Just failing without stating the reason is incredibly frustrating. Most users don't have the option of looking at the source and figuring out which package they are missing. (To be fair, most Linux users are probably savvy enough to be able to figure out a package is missing. The point still stands though!)

[ikreb7]

That looks great, but perhaps we should ask the users whether they would like to install the package or generate the wpa_supplicant config file? Perhaps before we suggest installation we might try if nmcli is available and if so just use that. This would require some more code rearrangement, in fact we might start with searching for nmcli and only if we do not find it go for the dbus interface. Still this looks like a bit of a project.

See #162. I add nmcli. So maybe we could drop using dbus soon.

[XI2vGMst]

Without this pr, my script just resorts back to wpa_supplicant without even giving a proper explanation. It took me like 2 hours to figure out that a package was missing. I found the issue because I just set NM_AVAILABLE to True and then it finally gave me the warning that the package isn't installed.

I want this to be merged!