Add error handling for older stem versions

Currently OP fails if the python-stem version required for enabling v3 services is not found. Instead, it should warn the user and either continue with v2 services only, or exit and ask the user to manually exclude v3 services on the command line.

Trac:
Parent Ticket: #33321 (moved)

added actualpoints::0.1 component::metrics/onionperf metrics-team-roadmap-2020 owner::metrics-team parent::33321 points::0.5 priority::medium resolution::fixed reviewer::karsten severity::normal sponsor::59-must status::closed type::defect labels

Trac:
Keywords: N/A deleted, metrics-team-roadmap-2020 added
Sponsor: N/A to Sponsor59
Points: N/A to 0.5

Moving to Sponsor59-must, because we should really do these in order to call Sponsor59 done.

Trac:
Sponsor: Sponsor59 to Sponsor59-must

Trac:
Parent: N/A to #33321 (moved)

How can I reproduce this issue? As I understand the code, it facilitates onion services in both v2 and v3.

Trac:
Status: new to needs_information

IIRC, this was an issue before Debian Buster, when the Stretch (now oldstable) distribution had stem version 1.5, and we had to install a newer version (1.7) from backports. I'd say it's very unlikely anyone would end up using this old a version when following our instructions on a Debian system now - perhaps we should just could a note in the documentation and optionally add a versioned dependency in requirements.txt (e.g stem >= 1.5)

Trac:
Status: needs_information to new

It appears we already document the required stem version in README.md as 1.7.0 - Attaching a patch to include this in requirements.txt

Trac:
0001-Adds-required-stem-version.patch

Trac:
Status: new to needs_review

Patch looks good, will merge together with #30586 (moved). Thanks for the analysis and for the fix!

Trac:
Status: needs_review to merge_ready
Reviewer: N/A to karsten

This is now merged together with #30586 (moved). Closing. Thanks!

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Resolution: N/A to fixed
Status: merge_ready to closed

Adding my 0.1 actual points

Trac:
Actualpoints: N/A to 0.1

closed

changed time estimate to 4h

added 48m of time spent

mentioned in issue #33321 (moved)