Releases · heroku/heroku-buildpack-python · GitHub

10 Dec 13:46

edmorley

v325 Latest

Latest

The build now errors if the files for multiple package managers are found. This replaces the warning displayed since November 2024. (#1993)
Sunset the previously deprecated support for falling back to installing dependencies from a setup.py file if no Python package manager files were found. (#1992)
Updated uv from 0.9.14 to 0.9.17. (#1995)

Assets 2

09 Dec 11:01

edmorley

v324

The build now errors if an existing Python virtual environment is found in the build directory at .venv/ or venv/. This replaces the warning displayed since September 2025. (#1990)
Stopped adding the current working directory to PATH. (#1987)

Assets 2

05 Dec 22:18

edmorley

v323

Changed the default Python version for new apps from 3.13 to 3.14. (#1984)
The Python 3.14 version alias now resolves to Python 3.14.2. (#1985)
The Python 3.13 version alias now resolves to Python 3.13.11. (#1985)

Assets 2

02 Dec 18:25

edmorley

v322

The Python 3.14 version alias now resolves to Python 3.14.1. (#1982)
The Python 3.13 version alias now resolves to Python 3.13.10. (#1982)
Updated uv from 0.9.11 to 0.9.14. (#1979)

Assets 2

21 Nov 19:38

edmorley

v321

Deprecated support for Python 3.10. (#1972)
Updated uv from 0.9.9 to 0.9.11. (#1973)
Added more messaging to the build log recommending uv. (#1975)
Switched from using --disable-pip-version-check to the env var PIP_DISABLE_PIP_VERSION_CHECK=1 when using pip. (#1974)

Assets 2

20 Nov 14:28

edmorley

v320

Added a check for misspelled .python-version files. (#1970)
Fixed regex for null bytes character replacement to replace all occurrences, not just the first. (#1966)
Unpinned Poetry's dulwich version, since the upstream incompatibility with older Python has been fixed. (#1967)

Assets 2

14 Nov 20:43

edmorley

v319

Updated uv from 0.9.7 to 0.9.9. (#1961)
Improved the error message shown for .python-version files that contain unexpected ASCII control code characters. (#1962)
Fixed Bash command substitution warnings from being shown if runtime.txt contains null byte characters. (#1962)
Improved the error message shown if the buildpack's build data file is deleted by a pre/post-compile hook. (#1963)

Assets 2

12 Nov 17:35

edmorley

v318

Improved the error message shown when a .python-version file uses an unsupported file encoding. (#1958)
Improved the error message shown when a .python-version or runtime.txt file contain an invalid Python version. (#1958)
Added support for commented lines in runtime.txt, for parity with .python-version. (#1958)

Assets 2

03 Nov 17:24

edmorley

v317

The Python 3.9 version alias now resolves to Python 3.9.25. (#1955)
Updated uv from 0.9.5 to 0.9.7. (#1952)

Assets 2

27 Oct 13:24

edmorley

v316

Improved the error message when a .python-version or runtime.txt file contains invisible Unicode whitespace characters. (#1947)
Added metrics for the file encoding of .python-version and runtime.txt files. (#1948)

Assets 2