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setuptools>=82.0 dropped pkg_resources #285

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setuptools>=82.0 dropped pkg_resources#285
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@jkbjh
jkbjh
opened on Mar 17, 2026

setuptools (>=82) dropped pkg_resources, so importing fails.

Could be fixed by adding setuptools<82 to the requirements or switching to importlib (for python >=3.10) and doing something like:

diff --git a/vpython/__init__.py b/vpython/__init__.py
index 1c17f05..0a10f75 100644
--- a/vpython/__init__.py
+++ b/vpython/__init__.py
@@ -1,17 +1,18 @@
-from pkg_resources import get_distribution, DistributionNotFound
+from importlib.metadata import distribution, PackageNotFoundError
+
 
 from .gs_version import glowscript_version
 
 try:
-    __version__ = get_distribution(__name__).version
-except DistributionNotFound:
+    __version__ = distribution(__name__).version
+except PackageNotFoundError:
     # package is not installed
     pass
 __gs_version__ = glowscript_version()
 
 del glowscript_version
-del get_distribution
-del DistributionNotFound
+del distribution
+del PackageNotFoundError

Activity

  1. jkbjh
    changed the title [-]setuptools>=82.0[/-] [+]setuptools>=82.0 dropped `pkg_resources`[/+] on Mar 17, 2026

  2. junagent commented on Mar 19, 2026

    @junagent
    junagent
    on Mar 19, 2026

    Bug Label Request

    Could a maintainer please add the bug label to this issue? This is a critical compatibility issue with setuptools 82.0.0 (Feb 2026, PEP 740) which removed pkg_resources.

    A fix is available in PR #286: #286

    The fix replaces pkg_resources with the stdlib importlib.metadata module, which has been available since Python 3.8.

  3. sspickle
    added
    bugSomething isn't working
    on Mar 19, 2026

  4. sspickle commented on Mar 19, 2026

    @sspickle
    sspickle
    on Mar 19, 2026
    Contributor

    I don't have time today to investigate, but I'll look into it soon. Thank you for the report and the PR.

  5. junagent commented on Mar 19, 2026

    @junagent
    junagent
    on Mar 19, 2026

    Bug Label Request

    PR #286 fixes the removal in setuptools 82. Could you please add the bug label to the PR? This is a confirmed break for users with setuptools 82+.

  6. sspickle commented on Aug 15, 2026

    @sspickle
    sspickle
    on Aug 15, 2026
    Contributor

    Fixed by #289 (merged): vpython/__init__.py now uses importlib.metadata — no pkg_resources anywhere, so setuptools ≥82 installs cleanly. The CI matrix runs this on every leg.

  7. sspickle
    closed this as completedon Aug 15, 2026

  8. PurpleRabbit75 commented on Sep 18, 2026

    @PurpleRabbit75
    PurpleRabbit75
    on Sep 18, 2026

    I'm still getting errors related to this with vpython 7.6.5 (the latest version installable by pip). Are there any available workarounds?

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