Unable to install with setuptools 58 - "error in jsmin setup command: use_2to3 is invalid."

[serenecloud]

When trying to install jsmin 2.2.2 from a requirements.txt file using a python environment with setuptools 58 the following failure is happening for us on centos:

Collecting jsmin==2.2.2
  Downloading jsmin-2.2.2.tar.gz (12 kB)
    ERROR: Command errored out with exit status 1:
     command: /opt/pact-virtual-environment/bin/python3 -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-p9xovusy/jsmin_25a28adbd1db497daf15f6eb22893f8a/setup.py'"'"'; __file__='"'"'/tmp/pip-install-p9xovusy/jsmin_25a28adbd1db497daf15f6eb22893f8a/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-8_iwpxdk
         cwd: /tmp/pip-install-p9xovusy/jsmin_25a28adbd1db497daf15f6eb22893f8a/
    Complete output (1 lines):
    error in jsmin setup command: use_2to3 is invalid.
    ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/17/73/615d1267a82ed26cd7c124108c3c61169d8e40c36d393883eaee3a561852/jsmin-2.2.2.tar.gz#sha256=b6df99b2cd1c75d9d342e4335b535789b8da9107ec748212706ef7bbe5c2553b (from https://pypi.org/simple/jsmin/). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
ERROR: Could not find a version that satisfies the requirement jsmin==2.2.2 (from versions: 2.0, 2.0.1, 2.0.2, 2.0.2.post1, 2.0.3, 2.0.5, 2.0.6, 2.0.7, 2.0.8, 2.0.9, 2.0.10, 2.0.11, 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.5, 2.1.6, 2.2.0, 2.2.1, 2.2.2)
ERROR: No matching distribution found for jsmin==2.2.2

This looks to be happening because setuptools 58 added a breaking change to remove use_2to3 support: https://setuptools.readthedocs.io/en/latest/history.html#v58-0-0

#2086: Removed support for 2to3 during builds. Projects should port to a unified codebase or pin to an older version of Setuptools using PEP 518 build-requires.

pypa/setuptools#2769

It would be awesome if this could be updated, but until then, if you're also getting this issue, try setuptools 57.5.0.

[tikitu]

I'm no longer maintaining this project. Thanks for the workaround pinning setuptools! I'll leave this issue open so that anyone else with the same problem can find it.

[MichaIng]

Faced the same issue. Thanks for providing the workaround, which works fine here as well.

[facelessuser]

While locking setup tools is a temporary solution, it will make using this project essentially dead in the future. It probably wouldn't be a bad idea at least to run the conversion from 2to3 on the project and just cut a new Python 3 only release (Python 2 is dead, and the last version can still be used for it). It would at least give this project some more longevity until/if someone wants to help with maintainership.

[facelessuser]

If it would be merged, I would be willing to create a pull to get a Python3 only release out the door. But if pulls will not be merged, I won't bother. Please let me know if a pull would be considered.

[MichaIng]

Agreed! While its good somehow to have that build failure as last shot call to switch to a different maintained JavaScript minifier, it would be good to have more time (without frozen setuptools) for this migration to bubble up dependency tails.

Please let me know if a pull would be considered.

and if a new release to PyPI can be done accordingly to have pip pulling that fix.

[serenecloud]

Ok, I've added #34 to remove Python 2 support. My testing was not exhaustive, but it was a pretty small change and it worked fine for me on Python 3.6.9.

[jromal]

Any news about this pull request?
Python 2 is dead and to use an old version of setuptools is still acceptable, but not for long term.

[MichaIng]

Just read what is actually told in the pull request 😄:

Thanks very much! I will dig up my pypi credentials and get this published, but I'm about to spend some days up a mountain: just in case something unexpected happens I would rather do that when I'm back down and can fix any mistakes I might make quickly. If you didn't see this merged and published by 2021-09-17 please feel free to poke me, I can't see anything that should delay me so long.

[serenecloud]

Thanks for releasing this @tikitu!

[tikitu]

You're welcome, thanks for making it so easy for me to do so!

[MichaIng]

Release is on PyPI: https://pypi.org/project/jsmin/

Many thanks 👍!

[Gerryjj]

Applies to GOOEY and setuptools.
FIXED...see below
I still can't install GOOEY with provided build with the problem related back to setuptools>58
I need Gooey because of another app which depends on it.
Placed an issue at
chriskiehl/Gooey#824
the wxpython build fails.
I tried setting setuptools to 57 and 58 but the import fails.
Looking for any workaround.

...
This workaround seems to work albeit only with setuptools=57.5
first.
https://morioh.com/p/1c920e8e864e