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Migrate away from the deprecated pkgutil.find_loader() #1493

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Merged
edmorley merged 2 commits into from
Oct 3, 2023
Merged

Migrate away from the deprecated pkgutil.find_loader() #1493

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a5aa48a
Migrate away from the deprecated `pkgutil.find_loader()` (#1493)
edmorley Oct 3, 2023
90014a0
Release v237 (#1493)
edmorley Oct 3, 2023
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4 changes: 4 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -3,6 +3,10 @@
## Unreleased


## v237 (2023-10-03)

- Fixed `pkgutil.find_loader` deprecation warning when using Python 3.12. ([#1493](https://github.com/heroku/heroku-buildpack-python/pull/1493))

## v236 (2023-10-02)

- Added support for Python 3.12. ([#1490](https://github.com/heroku/heroku-buildpack-python/pull/1490))
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6 changes: 2 additions & 4 deletions bin/utils
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Expand Up @@ -58,12 +58,10 @@ measure-size() {
echo "$(du -s .heroku/python 2>/dev/null || echo 0) | awk '{print $1}')"
}

# Returns 0 if the specified module exists, otherwise returns 1.
is_module_available() {
# Returns 0 if the specified module exists, otherwise returns 1.
# Uses pkgutil rather than pkg_resources or pip's CLI, since pkgutil exists
# in the stdlib, and doesn't depend on the choice of package manager.
local module_name="${1}"
python -c "import sys, pkgutil; sys.exit(0 if pkgutil.find_loader('${module_name}') else 1)"
python -c "import sys, importlib.util; sys.exit(0 if importlib.util.find_spec('${module_name}') else 1)"
}

# The requirement versions are effectively buildpack constants, however, we want
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