Cannot install with pip

[philpem]

There seems to be an issue with installing this package using Pip as explained in the readme.

(certbot-venv) root@avalon:~# pip install certbot-dns-pdns
ERROR: Could not find a version that satisfies the requirement certbot-dns-pdns (from versions: none)
ERROR: No matching distribution found for certbot-dns-pdns

Installing Certbot itself works fine:

(certbot-venv) root@avalon:~# pip install certbot
Collecting certbot
  Downloading certbot-3.1.0-py3-none-any.whl (407 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 407.2/407.2 KB 7.2 MB/s eta 0:00:00

[philpem]

I've just tried to install the wheel (.whl) from the Releases page -- while it's not an "approved" installation method it gives more clues:

(certbot-venv) root@syrys:~# pip install certbot_dns_pdns-0.1.1-py3-none-any.whl 
Processing ./certbot_dns_pdns-0.1.1-py3-none-any.whl
Requirement already satisfied: certbot>=2.7.0 in ./certbot-venv/lib/python3.10/site-packages (from certbot-dns-pdns==0.1.1) (3.1.0)
Collecting dns-lexicon>=3.15.0
  Downloading dns_lexicon-3.20.1-py3-none-any.whl (255 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 255.6/255.6 KB 4.3 MB/s eta 0:00:00
ERROR: Package 'certbot-dns-pdns' requires a different Python: 3.10.12 not in '<4.0,>=3.11'

Sadly it seems the certbot-dns-pdns package needs a newer version of Python. It would be great if support could be added for 3.10 -- reasoning being that while I appreciate the Ubuntu 22.04 LTS isn't cutting-edge, it is supported until 2027.

I had planned to leave the 24.04 LTS for a little while to stabilise before migrating.

Edit - the Certbot Dockerfile is based on Python 3.8, so this dependency on Python 3.11 also breaks compatibility with that: https://hub.docker.com/r/certbot/certbot/dockerfile

[kaechele]

Thanks for reporting this. I think it's probably not an issue to support older versions of Python.
I'll look into it.

[philpem]

Thanks, much appreciated 👍

I've just had a quick try at installing certbot-dns-pdns inside a Python 3.12-Alpine container and crashed into a PyYAML bug (yaml/pyyaml#601), and this was pulled in by a dependency in dns-lexicon:

Collecting pyyaml<6,>=5 (from dns-lexicon<=3.5.6,>=3.2.4->certbot-dns-powerdns)
  Downloading PyYAML-5.4.1.tar.gz (175 kB)
  Installing build dependencies: started
  Installing build dependencies: finished with status 'done'
  Getting requirements to build wheel: started
  Getting requirements to build wheel: finished with status 'error'
(..)
        File "<string>", line 201, in get_source_files
        File "/tmp/pip-build-env-6zzpe_lm/overlay/lib/python3.12/site-packages/setuptools/_distutils/cmd.py", line 120, in __getattr__
          raise AttributeError(attr)
      AttributeError: cython_sources
      [end of output]

With the earlier output re. dns-lexicon being:

Collecting dns-lexicon<=3.5.6,>=3.2.4 (from certbot-dns-powerdns)
  Downloading dns_lexicon-3.5.6-py3-none-any.whl.metadata (9.4 kB)

The obvious answer would be to upgrade dns-lexicon but I expect there's a reason it's pinned at 3.5.5 on pypi.

Edit: I've just built using the current git HEAD and pip installed it fine, so that's something.