Drop or replace ntfy image as it is/will be broken

[kaechele]

ntfy seems to be largely unmaintained (dschep/ntfy#248) with some sporadic commits but no updates happening to support newer versions of Python or dropping/replacing of unmaintained dependencies (eg. sleekxmpp). Pull Requests are also only sporadically processed.

The sleekxmpp dependency is currently also leading to a build error with newer python releases, which leaves ntfy inoperable in current Docker images:

[...]
Collecting sleekxmpp
  Downloading sleekxmpp-1.3.3.tar.gz (845 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 845.0/845.0 kB 12.7 MB/s eta 0:00:00
  Preparing metadata (setup.py) ... error
  error: subprocess-exited-with-error
  
  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [21 lines of output]
      Traceback (most recent call last):
        File "<string>", line 2, in <module>
        File "<pip-setuptools-caller>", line 34, in <module>
        File "/tmp/pip-install-arcqy0_c/sleekxmpp_8c99246bf2284a698a8ec6d5f14387e4/setup.py", line 19, in <module>
          from sleekxmpp.version import __version__
        File "/tmp/pip-install-arcqy0_c/sleekxmpp_8c99246bf2284a698a8ec6d5f14387e4/sleekxmpp/__init__.py", line 20, in <module>
          from sleekxmpp.stanza import Message, Presence, Iq
        File "/tmp/pip-install-arcqy0_c/sleekxmpp_8c99246bf2284a698a8ec6d5f14387e4/sleekxmpp/stanza/__init__.py", line 10, in <module>
          from sleekxmpp.stanza.error import Error
        File "/tmp/pip-install-arcqy0_c/sleekxmpp_8c99246bf2284a698a8ec6d5f14387e4/sleekxmpp/stanza/error.py", line 9, in <module>
          from sleekxmpp.xmlstream import ElementBase, ET
        File "/tmp/pip-install-arcqy0_c/sleekxmpp_8c99246bf2284a698a8ec6d5f14387e4/sleekxmpp/xmlstream/__init__.py", line 9, in <module>
          from sleekxmpp.jid import JID
        File "/tmp/pip-install-arcqy0_c/sleekxmpp_8c99246bf2284a698a8ec6d5f14387e4/sleekxmpp/jid.py", line 25, in <module>
          from sleekxmpp.thirdparty import OrderedDict
        File "/tmp/pip-install-arcqy0_c/sleekxmpp_8c99246bf2284a698a8ec6d5f14387e4/sleekxmpp/thirdparty/__init__.py", line 13, in <module>
          from sleekxmpp.thirdparty.orderedset import OrderedSet
        File "/tmp/pip-install-arcqy0_c/sleekxmpp_8c99246bf2284a698a8ec6d5f14387e4/sleekxmpp/thirdparty/orderedset.py", line 25, in <module>
          class OrderedSet(collections.MutableSet):
                           ^^^^^^^^^^^^^^^^^^^^^^
      AttributeError: module 'collections' has no attribute 'MutableSet'
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed
[...]

So this will need some attention sooner or later.

In my cursory searches I haven't found a 1:1 replacement option but ntfy.sh could be an option, albeit not as comfortable as just sending notifications to external services and messengers using the current ntfy.

The other alternative is to fork ntfy / find a maintained fork of it. I might look into this if there is enough interest.

[kaechele]

#144 (comment) addresses this.