Changelog

2025.11.12

This is a small release to fix a warning when running in script mode before we drop Python 3.8.

We’d like to thank the following folks who contributed to this release:

  • @henryiii

Bugfixes:

  • Avoid warnings when running in script mode by @henryiii in https://github.com/wntrblm/nox/pull/1025

  • nox --report <file> should support Path by @henryiii in https://github.com/wntrblm/nox/pull/1026

  • Install env was typed differently by @henryiii in https://github.com/wntrblm/nox/pull/1028

Internal changes:

  • pytest log_level is better than log_cli_level by @henryiii in https://github.com/wntrblm/nox/pull/1029

  • Use last intel macOS image by @henryiii in https://github.com/wntrblm/nox/pull/1031

  • Add a few more passing ruff checks by @henryiii in https://github.com/wntrblm/nox/pull/1030

2025.10.16

This is a quick release to make our new dependency, pbs-installer, optional. This is only needed to install Python if you are not using the uv backend. We’ve also added the time taken to the output when it’s over a second.

We’d like to thank the following folks who contributed to this release:

  • @henryiii

Changes:

  • Make pbs-installer an optional dependency by @henryiii in https://github.com/wntrblm/nox/pull/1017

  • Include time on longer runs (adds humanize dependency) by @henryiii in https://github.com/wntrblm/nox/pull/1014

Internal changes:

  • Run conda on Windows/Linux again by @henryiii in https://github.com/wntrblm/nox/pull/1015

2025.10.14

This release updates the default for the GitHub Action to target the current range of recommended Pythons (3.10-3.14). There’s now a mechanism to control if nox downloads Python (even when not using uv). Several fixes include better free-threading support, custom filenames in script mode, and support for GitHub Actions Windows ARM runners.

We’d like to thank the following folks who contributed to this release:

  • @agriyakhetarpal (first contribution)

  • @henryiii

  • @IvanIsCoding (first contribution)

  • @jbdyn (first contribution)

  • @johnthagen

  • @saucoide

  • @shenxianpeng (first contribution)

  • @Spacetown (first contribution)

  • @zzzeek (first contribution)

Features:

  • Add --download-python python option by @saucoide in https://github.com/wntrblm/nox/pull/989

  • Add session.env_dir to get the Path to the environment by @jbdyn in https://github.com/wntrblm/nox/pull/974

Changes:

  • GitHub Action 3.10-3.14 default by @henryiii in https://github.com/wntrblm/nox/pull/1003

  • Percolate the verbose global option to the silent argument for session installation commands, and document it by @agriyakhetarpal in https://github.com/wntrblm/nox/pull/983

  • Disallow abbreviated options by @henryiii in https://github.com/wntrblm/nox/pull/973

  • Log output of failed process by @jbdyn in https://github.com/wntrblm/nox/pull/974

  • Use a separate logging level (SESSION_INFO) for session info instead of warning by @Spacetown in https://github.com/wntrblm/nox/pull/990

Bugfixes:

  • Support scripts with custom names by @henryiii in https://github.com/wntrblm/nox/pull/1007

  • Correctly match free-threaded python versions by @zzzeek in https://github.com/wntrblm/nox/pull/999

  • Let uv replace the directory instead of deleting it ourselves by @henryiii in https://github.com/wntrblm/nox/pull/981

  • Tighten type for venv_backend by @henryiii in https://github.com/wntrblm/nox/pull/967

  • GitHub Actions Windows ARM support by @henryiii in https://github.com/wntrblm/nox/pull/1002

  • Show a warning (eventually error) if a duplicate session is encountered by @henryiii in https://github.com/wntrblm/nox/pull/1013

  • Fix validation error for nox.options.keywords by @henryiii in https://github.com/wntrblm/nox/pull/1011

Documentation:

  • Add --script to uv run inline metadata for nox-uv example by @johnthagen in https://github.com/wntrblm/nox/pull/984

  • Document nox-uv third party package by @johnthagen in https://github.com/wntrblm/nox/pull/978

  • Recommend --locked over --frozen for uv sync by @johnthagen in https://github.com/wntrblm/nox/pull/972

  • Tweak the grammar in a comment in tasks.py by @brettcannon in https://github.com/wntrblm/nox/pull/987

  • Add rustworkx as an example user by @IvanIsCoding in https://github.com/wntrblm/nox/pull/975

  • Update badge from black to ruff by @shenxianpeng in https://github.com/wntrblm/nox/pull/971

Internal changes:

  • Hide new coverage warning on 3.14 by @henryiii in https://github.com/wntrblm/nox/pull/980

  • Correct minimum versions and test by @henryiii in https://github.com/wntrblm/nox/pull/962

  • CI ensure there are no duplicate log handlers by @saucoide in https://github.com/wntrblm/nox/pull/991

  • Add 3.14 beta 1 support by @henryiii in https://github.com/wntrblm/nox/pull/970

  • Add better reprs for some internal classes by @henryiii in https://github.com/wntrblm/nox/pull/966

  • Drop Windows 2019 by @henryiii in https://github.com/wntrblm/nox/pull/985

  • Modernize and remove rc conda channel by @henryiii in https://github.com/wntrblm/nox/pull/964

  • Restore minimums test by @henryiii in https://github.com/wntrblm/nox/pull/982

  • Use dict instead of OrderedDict by @henryiii in https://github.com/wntrblm/nox/pull/963

  • Add conda marker to tests by @henryiii in https://github.com/wntrblm/nox/pull/969

  • Clear the registry in tests by @henryiii in https://github.com/wntrblm/nox/pull/968

2025.05.01

This is a bugfix release that primarily adds support for uv 0.7+. A few other small fixes were made.

We’d like to thank the following folks who contributed to this release:

  • @chirizxc

  • @gschaffner

  • @henryiii

  • @living180

  • @Spectre5 (first contribution)

Bugfixes:

  • uv version is now uv self version, respect UV by @henryiii and @Spectre5 in https://github.com/wntrblm/nox/pull/955

  • Add UV_PYTHON to disallowed vars by @henryiii in https://github.com/wntrblm/nox/pull/959

  • Never ignore URL dependencies in PEP 723 noxfiles by @gschaffner in https://github.com/wntrblm/nox/pull/935

  • Support forcing Python on parametrized session by @henryiii in https://github.com/wntrblm/nox/pull/958

  • Fix conda_install issue with newer conda (only Unix) by @henryiii in https://github.com/wntrblm/nox/pull/957

  • Show skip reason by default by @chirizxc in https://github.com/wntrblm/nox/pull/941

  • Support Path for envdir by @henryiii in https://github.com/wntrblm/nox/pull/932

  • Use Python 3.12 for action, allow 3.13, drop 3.8 from auto versions by @henryiii in https://github.com/wntrblm/nox/pull/946

Documentation:

  • Fix a typo in the changelog by @gschaffner in https://github.com/wntrblm/nox/pull/936

  • Update uv recipe by @henryiii in https://github.com/wntrblm/nox/pull/933

  • Fix parametrized session tagging example by @living180 in https://github.com/wntrblm/nox/pull/942

  • uv now supports pip install . reinstallation by @henryiii in https://github.com/wntrblm/nox/pull/947

Internal changes:

  • Use PEP 639 license info by @henryiii in https://github.com/wntrblm/nox/pull/956

  • Make test skips a bit smarter by @henryiii in https://github.com/wntrblm/nox/pull/929

  • Add our own requirements to conda too by @henryiii in https://github.com/wntrblm/nox/pull/945

2025.02.09

This release improves PEP 723 support, including adding dependencies to the noxfile itself (“plugins”). It adds the long-awaited “requires” option, allowing sessions to require other sessions. And it brings further improvements to the pyproject.toml support, including helpers for dependency-groups and Python version lists.

We’d like to thank the following folks who contributed to this release:

  • @btemplep (first contribution)

  • @chirizxc (first contribution)

  • @davidhewitt (first contribution)

  • @gschaffner (first contribution)

  • @henryiii

  • @oliversen (first contribution)

New features:

  • Support PEP 723 noxfiles by @henryiii in https://github.com/wntrblm/nox/pull/881

  • Expose main as nox.main by @henryiii in https://github.com/wntrblm/nox/pull/878 (followup fix: https://github.com/wntrblm/nox/pull/884)

  • Support session dependencies (requires) by @gschaffner in https://github.com/wntrblm/nox/pull/631

  • Helper to get dependency-groups by @henryiii in https://github.com/wntrblm/nox/pull/876

  • Helper to get the Python listing by @henryiii in https://github.com/wntrblm/nox/pull/877

  • Add a "pyproject.toml" default for load_toml by @henryiii in https://github.com/wntrblm/nox/pull/917

Bugfixes:

  • Correct virtualenv bin dir under mingw python by @davidhewitt in https://github.com/wntrblm/nox/pull/901

  • Allow pypy-* to be used as well for pypy* (matching GHA) by @henryiii in https://github.com/wntrblm/nox/pull/913

  • Don’t trigger a background update process for virtualenv by @henryiii in https://github.com/wntrblm/nox/pull/918

  • Include encoding for consistent behavior (default in Python 3.15+) by @henryiii in https://github.com/wntrblm/nox/pull/891

  • Outer env issues fixed by @henryiii in https://github.com/wntrblm/nox/pull/874

  • Support noxfile being a symlink by @henryiii in https://github.com/wntrblm/nox/pull/829

  • Drop PyPy from the default list for the GitHub Action by @henryiii in https://github.com/wntrblm/nox/pull/916

Bugfixes related to uv support:

  • Catch PermissionError from popen when UV is not installed by @btemplep in https://github.com/wntrblm/nox/pull/908

  • Use uv python install only with uv backend by @oliversen in https://github.com/wntrblm/nox/pull/900

  • Handle "uvx" like "uv" by @henryiii in https://github.com/wntrblm/nox/pull/920

  • Support broken uv (via pyenv) by @henryiii in https://github.com/wntrblm/nox/pull/922

Tox-to-nox script:

  • Drop support for tox 3 by @henryiii in https://github.com/wntrblm/nox/pull/910

  • Switch pkgutil for importlib-resources by @henryiii in https://github.com/wntrblm/nox/pull/887

  • Correctly separate command-line arguments by @chirizxc in https://github.com/wntrblm/nox/pull/906

Improved noxfile validation:

  • Error if invalid reuse_venv set by @henryiii in https://github.com/wntrblm/nox/pull/872

  • Error with helpful message if invalid option is set via nox.options by @henryiii in https://github.com/wntrblm/nox/pull/871 (followup fix: https://github.com/wntrblm/nox/pull/921)

  • Validate entries in nox.config, too, using attrs by @henryiii in https://github.com/wntrblm/nox/pull/880

Internal changes:

  • Add more Ruff checks and fixes by @henryiii in https://github.com/wntrblm/nox/pull/893

  • Cleanup symlink noxfile code by @henryiii in https://github.com/wntrblm/nox/pull/865

  • Drop some type ignores for colorlog by @henryiii in https://github.com/wntrblm/nox/pull/888

  • Limit the visible items for tab completion by @henryiii in https://github.com/wntrblm/nox/pull/889

  • More typing and test improvements by @henryiii in https://github.com/wntrblm/nox/pull/890

  • Some extra simplifications from Ruff by @henryiii in https://github.com/wntrblm/nox/pull/870

  • Use dependency-groups by @henryiii in https://github.com/wntrblm/nox/pull/873

  • Pull out env creation into helper method by @henryiii in https://github.com/wntrblm/nox/pull/912

  • Pulled out get_virtualenv & better typing by @henryiii in https://github.com/wntrblm/nox/pull/882

  • Fix broken mock on CPython 3.12.8+ in tests by @henryiii in https://github.com/wntrblm/nox/pull/903

  • Statically type tests by @henryiii in https://github.com/wntrblm/nox/pull/894

  • Use tmp_path instead of tmpdir in tests by @henryiii in https://github.com/wntrblm/nox/pull/895

2024.10.09

This release adds explicit support for Python 3.13 and drops support for running Nox itself under Python 3.7. Note that you can still use 3.7 in your Nox sessions, we just dropped support for installing & running nox itself in 3.7.

We’d like to thank the following folks who contributed to this release:

  • @edgarrmondragon

  • @ember91

  • @henryiii

  • @hmd101

  • @KasperZutterman

  • @living180

  • @mayeut

  • @saucoide

  • @Wurstnase

New features:

  • Allow setting tags on parametrized sessions by @living180 in https://github.com/wntrblm/nox/pull/832

  • Added support for uv-installed pythons by @saucoide in https://github.com/wntrblm/nox/pull/842

  • Added session.install_and_run_script by @henryiii in https://github.com/wntrblm/nox/pull/847

Bugfixes:

  • Updated type annotation of stderr parameter to make it optional by @edgarrmondragon in https://github.com/wntrblm/nox/pull/835

  • Removed add_timestamp from noxfile.options by @Wurstnase in https://github.com/wntrblm/nox/pull/856

Documentation:

  • Added warning about uv and local packages by @henryiii in https://github.com/wntrblm/nox/pull/830

  • Fixed contribution guidelines by @Wurstnase in https://github.com/wntrblm/nox/pull/850

  • Fixed typos by @ember91 in https://github.com/wntrblm/nox/pull/839

  • Fixed typos in cookbook by @hmd101 in https://github.com/wntrblm/nox/pull/837

  • Added missing cookbook recipe snippet imports by @KasperZutterman in https://github.com/wntrblm/nox/pull/853

  • Cleaned up dev recipe by @henryiii in https://github.com/wntrblm/nox/pull/862

  • Added note about uv reinstall by @henryiii in https://github.com/wntrblm/nox/pull/863

  • Added uv sync example by @henryiii in https://github.com/wntrblm/nox/pull/864

Internal changes:

  • Use default action tests for macos-14 by @mayeut in https://github.com/wntrblm/nox/pull/824

  • Added 3.13 to the action defaults by @henryiii in https://github.com/wntrblm/nox/pull/846

  • Dropped Python 3.7 by @henryiii in https://github.com/wntrblm/nox/pull/822

  • Included 3.13 in classifiers by @henryiii in https://github.com/wntrblm/nox/pull/851

  • Use uv if available in action by @henryiii in https://github.com/wntrblm/nox/pull/831

  • Run tests with Python 3.13 by @edgarrmondragon in https://github.com/wntrblm/nox/pull/834

  • Updated macos-latest to macos-14 by @henryiii in https://github.com/wntrblm/nox/pull/821

  • Use miniforge by @henryiii in https://github.com/wntrblm/nox/pull/854

  • Use astral-sh/setup-uv by @henryiii in https://github.com/wntrblm/nox/pull/859

  • Dropped PyPy 3.9 from test matrix by @henryiii in https://github.com/wntrblm/nox/pull/858

2024.04.15

We’d like to thank the following folks who contributed to this release:

  • @cjolowicz

  • @henryiii

  • @mayeut

New features:

  • Added support for PEP 723 (inline script metadata) with nox.project.load_toml by @henryiii in https://github.com/wntrblm/nox/pull/811

  • Added support for micromamba by @henryiii in https://github.com/wntrblm/nox/pull/807

  • Added venv_backend property to sessions by @henryiii in https://github.com/wntrblm/nox/pull/798

  • Added the ability to use None to remove environment variables by @henryiii in https://github.com/wntrblm/nox/pull/812

  • Added support for skipping sessions by default using default=False by @henryiii in https://github.com/wntrblm/nox/pull/810

Bugfixes:

  • Use static arguments instead of **kwargs by @henryiii in https://github.com/wntrblm/nox/pull/815

  • Do not depend on pipx in Nox GitHub action by @mayeut in https://github.com/wntrblm/nox/pull/768

  • Disallow UV_SYSTEM_PYTHON by @henryiii in https://github.com/wntrblm/nox/pull/817

  • Ensure ‘uv’ always works in a uv venv by @henryiii in https://github.com/wntrblm/nox/pull/818

  • Look for uv next to python if it’s not on PATH by @cjolowicz in https://github.com/wntrblm/nox/pull/795

  • Fixed missing f-string in --help message by @cjolowicz in https://github.com/wntrblm/nox/pull/790

  • Don’t error if not installing to passthrough by @henryiii in https://github.com/wntrblm/nox/pull/809

  • Avoid mixing venv and conda from environment by @henryiii in https://github.com/wntrblm/nox/pull/804

  • Skip test for conda env when conda isn’t installed by @cjolowicz in https://github.com/wntrblm/nox/pull/794

2024.03.02

We’d like to thank the following folks who contributed to this release:

  • @DiddiLeija

  • @MicaelJarniac

  • @chrysle

  • @edgarrmondragon

  • @fazledyn-or

  • @franekmagiera

  • @frenzymadness

  • @henryiii

  • @johnthagen

  • @mayeut

  • @patrick91

  • @q0w

  • @samypr100

  • @scop

  • @stasfilin

  • @stefanv

New Features:

  • Add uv backend by @henryiii in https://github.com/wntrblm/nox/pull/762

  • Add venv backend fallback by @henryiii in https://github.com/wntrblm/nox/pull/787

  • Add option --reuse-venv {yes,no,never,always} by @samypr100 in https://github.com/wntrblm/nox/pull/730

  • Add environment variable NOX_DEFAULT_VENV_BACKEND for default backend by @edgarrmondragon in https://github.com/wntrblm/nox/pull/780

  • Rename session.run_always to session.run_install by @henryiii in https://github.com/wntrblm/nox/pull/770

  • Add more option argument completions by @scop in https://github.com/wntrblm/nox/pull/707

  • Implement tox-to-nox for tox 4 by @frenzymadness in https://github.com/wntrblm/nox/pull/687

  • Allow --force-python on unparametrized sessions by @chrysle in https://github.com/wntrblm/nox/pull/756

  • Add include_outer_env parameter to session.run and friends by @franekmagiera in https://github.com/wntrblm/nox/pull/652

  • GitHub Action: Add support for the ~ version specifier by @mayeut in https://github.com/wntrblm/nox/pull/712

Bugfixes:

  • Rebuild environment when changing to an incompatible backend type by @henryiii in https://github.com/wntrblm/nox/pull/781

  • Warn user when first argument to session.run is a list by @stefanv in https://github.com/wntrblm/nox/pull/786

  • Allow overriding nox.options.sessions with --tags by @q0w in https://github.com/wntrblm/nox/pull/684

  • Allow overriding NO_COLOR with --force-color by @stasfilin in https://github.com/wntrblm/nox/pull/723

  • Fix nox.options.error_on_missing_interpreters when running in CI by @samypr100 in https://github.com/wntrblm/nox/pull/725

Documentation Improvements:

  • Create an official Nox badge by @johnthagen in https://github.com/wntrblm/nox/pull/714 and https://github.com/wntrblm/nox/pull/715

  • Add recipe for generating a matrix with GitHub Actions by @henryiii in https://github.com/wntrblm/nox/pull/696

  • Update some links by @henryiii in https://github.com/wntrblm/nox/pull/774

Internal Changes:

  • fix: always pull versions from metadata by @henryiii in https://github.com/wntrblm/nox/pull/782

  • chore: ruff moved to astral-sh by @henryiii in https://github.com/wntrblm/nox/pull/722

  • Use double quotes instead of single in github actions examples by @patrick91 in https://github.com/wntrblm/nox/pull/724

  • tests: fixes when running locally by @henryiii in https://github.com/wntrblm/nox/pull/721

  • chore: modernize Ruff config, bump pre-commit by @henryiii in https://github.com/wntrblm/nox/pull/744

  • chore(deps): bump actions/checkout from 3 to 4 by @dependabot in https://github.com/wntrblm/nox/pull/738

  • chore: ruff-format by @henryiii in https://github.com/wntrblm/nox/pull/745

  • chore(action): update default python-versions by @mayeut in https://github.com/wntrblm/nox/pull/767

  • chore(ci): allow manual runs on branches without a PR by @mayeut in https://github.com/wntrblm/nox/pull/766

  • chore(ci): bump actions/setup-python & conda-incubator/setup-miniconda by @mayeut in https://github.com/wntrblm/nox/pull/765

  • ci: group dependabot updates by @henryiii in https://github.com/wntrblm/nox/pull/755

  • fix(types): improve typing by @henryiii in https://github.com/wntrblm/nox/pull/720

  • ci: fix coverage combine for different OS’s by @henryiii in https://github.com/wntrblm/nox/pull/778

  • ci: update to artifacts v2 by @henryiii in https://github.com/wntrblm/nox/pull/772

  • ci: remove skipped job & combine (faster) by @henryiii in https://github.com/wntrblm/nox/pull/771

  • chore: cleanup Ruff a bit by @henryiii in https://github.com/wntrblm/nox/pull/783

  • chore(deps): bump the actions group with 2 updates by @dependabot in https://github.com/wntrblm/nox/pull/784

  • style: add type hints, update few functions by @stasfilin in https://github.com/wntrblm/nox/pull/728

  • Include Python 3.12 in GHA by @DiddiLeija in https://github.com/wntrblm/nox/pull/743

  • Allow tests to pass in environments where NO_COLOR=1 is set by @edgarrmondragon in https://github.com/wntrblm/nox/pull/777

  • tests: support running when the Python launcher for UNIX is present by @henryiii in https://github.com/wntrblm/nox/pull/775

  • chore: drop unneeded config option by @henryiii in https://github.com/wntrblm/nox/pull/773

  • Bump minimum virtualenv to 20.14.1 by @johnthagen in https://github.com/wntrblm/nox/pull/747

  • chore: save session name in Func by @MicaelJarniac in https://github.com/wntrblm/nox/pull/718

  • Removed the problematic Python 2.7.18 version by @stasfilin in https://github.com/wntrblm/nox/pull/726

  • Fixed Improper Method Call: Replaced NotImplementedError by @fazledyn-or in https://github.com/wntrblm/nox/pull/749

2023.04.22

We’d like to thank the following folks who contributed to this release:

  • @crwilcox

  • @dcermak

  • @edgarrmondragon

  • @FollowTheProcess

  • @henryiii

  • @reaperhulk

  • @scop

New Features:

  • Add support for NOXPYTHON, NOXEXTRAPYTHON and NOXFORCEPYTHON by @edgarrmondragon in https://github.com/wntrblm/nox/pull/688

  • feat: –json –list-sessions by @henryiii in https://github.com/wntrblm/nox/pull/665

Documentation Improvements:

  • style: spelling and grammar fixes by @scop in https://github.com/wntrblm/nox/pull/682

  • Add invite link to the discord server to CONTRIBUTING.md by @dcermak in https://github.com/wntrblm/nox/pull/679

Internal Changes:

  • chore: update pre-commit hooks by @edgarrmondragon in https://github.com/wntrblm/nox/pull/690

  • chore: move to using Ruff by @henryiii in https://github.com/wntrblm/nox/pull/691

  • Fix assertion in GHA tests by @FollowTheProcess in https://github.com/wntrblm/nox/pull/670

  • ci: some minor fixes by @henryiii in https://github.com/wntrblm/nox/pull/675

  • Constrain tox to <4.0.0 and minor fixes by @FollowTheProcess in https://github.com/wntrblm/nox/pull/677

  • chore: long term fix for bugbear opinionated checks by @henryiii in https://github.com/wntrblm/nox/pull/678

  • chore: switch to hatchling by @henryiii in https://github.com/wntrblm/nox/pull/659

  • Don’t run python 2.7 virtualenv tests for newer versions of virtualenv by @crwilcox in https://github.com/wntrblm/nox/pull/702

  • allow the use of argcomplete 3 by @reaperhulk in https://github.com/wntrblm/nox/pull/700

  • fix: enable list_sessions for session completion by @scop in https://github.com/wntrblm/nox/pull/699

  • chore: remove 3.6 tests, min version is 3.7 by @crwilcox in https://github.com/wntrblm/nox/pull/703

2022.11.21

We’d like to thank the following folks who contributed to this release:

  • @airtower-luna

  • @DiddiLeija

  • @FollowTheProcess

  • @henryiii

  • @hynek

  • @Julian

  • @nhtsai

  • @paw-lu

New features:

  • Include Python 3.11 classifier & testing (#655)

Improvements:

  • Fixed a few typos (#661, #660)

  • Drop dependency on py (#647)

  • nox.session.run now accepts a pathlib.Path for the command (#649)

  • Document nox.session.run’s stdout and stderr arguments and add example of capturing output (#651)

Bugfixes:

  • GitHub Action: replace deprecated set-output command (#668)

  • GitHub Action: point docs to 2022.8.7 not latest (#664)

  • Docs: fix argument passing in session.posargs example (#653)

  • Include GitHub action helper in MANIFEST.in (#645)

Internal changes:

  • GitHub Action: move to 3.11 final (#667)

  • Cleanup Python 2 style code (#657)

  • Update tools used in pre-commit (#646, #656)

2022.8.7

We’d like to thank the following folks who contributed to this release:

  • @CN-M

  • @crwilcox

  • @DiddiLeija

  • @edgarrmondragon

  • @FollowTheProcess

  • @hauntsaninja

  • @henryiii

  • @johnthagen

  • @jwodder

  • @ktbarrett

  • @mayeut

  • @meowmeowmeowcat

  • @NickleDave

  • @raddessi

  • @zhanpon

Removals:

  • Drop support for Python 3.6 (#526)

  • Disable running session.install outside a venv (#580)

New features:

  • Official Nox GitHub Action (#594, #606, #609, #620, #629, #637, #632, #633)

  • Missing interpreters now error the session on CI by default (#567)

  • Allow configurable child shutdown timeouts (#565)

  • Add session tags (#627)

  • Add short -N alias for --no-reuse-existing-virtualenvs (#639)

  • Export session name in NOX_CURRENT_SESSION environment variable (#641)

Improvements:

  • Add VENV_DIR to dev session in cookbook (#591)

  • Fix typo in tutorial.rst (#586)

  • Use consistent spelling for Nox in documentation (#581)

  • Support descriptions in tox-to-nox (#575)

  • Document that silent=True returns the command output (#578)

  • Support argcomplete v2 (#564)

Bugfixes:

  • Fix incorrect FileNotFoundError in load_nox_module (#571)

Internal changes:

  • Update the classifiers, documentation, and more to point to the new Winterbloom location (#587)

  • Support PEP 621 (pyproject.toml) (#616, #619)

  • Configure language code to avoid warning on sphinx build (#626)

  • Use latest GitHub action runners and include macOS (#613)

  • Jazz up the README with some badges/logo etc. (#605, #614)

  • Prefer type checking against Jinja2 (#610)

  • Introduce GitHub issue forms (#600, #603, #608)

  • Full strictness checking on mypy (#595, #596)

  • Drop 99% coverage threshold flag for 3.10 in noxfile (#593)

  • Create a requirements-dev.txt (#582)

  • Use myst-parser for Markdown docs (#561)

2022.1.7

Claudio Jolowicz, Diego Ramirez, and Tom Fleet have become maintainers of Nox. We’d like to thank the following folks who contributed to this release:

  • @brettcannon

  • @cjolowicz

  • @dhermes

  • @DiddiLeija

  • @FollowTheProcess

  • @franekmagiera

  • @henryiii

  • @jugmac00

  • @maciej-lech

  • @nawatts

  • @Tolker-KU

New features:

  • Add mamba backend (#444, #448, #546, #551)

  • Add session.debug to show debug-level messages (#489)

  • Add cookbook page to the documentation (#483)

  • Add support for the FORCE_COLOR environment variable (#524, #548)

  • Allow using session.chdir() as a context manager (#543)

  • Deprecate use of session.install() without a valid backend (#537)

Improvements:

  • Test against Python 3.10 (#495, #502, #506)

  • Add support for the channel option when using the conda backend (#522)

  • Show more specific error message when the --keywords expression contains a syntax error (#493)

  • Include reference to session.notify() in tutorial page (#500)

  • Document how session.run() fails and how to handle failures (#533)

  • Allow the list of sessions to be empty (#523)

Bugfixes:

  • Fix broken temporary directory when using session.chdir() (#555, #556)

  • Set the CONDA_PREFIX environment variable (#538)

  • Fix bin directory for the conda backend on Windows (#535)

Internal changes:

  • Replace deprecated load_module with exec_module (#498)

  • Include tests with source distributions (#552)

  • Add missing copyright notices (#509)

  • Use the new ReadTheDocs configurations (#527)

  • Bump the Python version used by ReadTheDocs to 3.8 (#496)

  • Improve the Sphinx config file (#499)

  • Update all linter versions (#528)

  • Add pre-commit and new checks (#530, #539)

  • Check MANIFEST.in during CI (#552)

  • Remove redundant LICENSE from MANIFEST.in (#505)

  • Make setuptools use the standard library’s distutils to work around virtualenv bug. (#547, #549)

  • Use shlex.join() when logging a command (#490)

  • Use shutil.rmtree() over shelling out to rm -rf in noxfile (#519)

  • Fix missing Python 3.9 CI session (#529)

  • Unpin docs session and add --error-on-missing-interpreter to CI (#532)

  • Enable color output from Nox, pytest, and pre-commit during CI (#542)

  • Only run conda_tests session by default if user has conda installed (#521)

  • Update dependencies in requirements-conda-test.txt (#536)

2021.10.1

New features:

  • Add session.warn to output warnings (#482)

  • Add a shared session cache directory (#476)

  • Add session.invoked_from (#472)

Improvements:

  • Conda logs now respect nox.options.verbose (#466)

  • Add session.notify example to docs (#467)

  • Add friendlier message if no noxfile.py is found (#463)

  • Show the noxfile.py docstring when using nox -l (#459)

  • Mention more projects that use Nox in the docs (#460)

Internal changes:

  • Move configs into pyproject.toml or setup.cfg (flake8) (#484)

  • Decouple test_session_completer from project level noxfile (#480)

  • Run Flynt to convert str.format to f-strings (#464)

  • Add python 3.10.0-rc2 to GitHub Actions (#475, #479)

  • Simplify CI build (#461)

  • Use PEP 517 build system, remove setup.py, use setup.cfg (#456, #457, #458)

  • Upgrade to mypy 0.902 (#455)

Special thanks to our contributors:

  • @henryiii

  • @cjolowicz

  • @FollowTheProcess

  • @franekmagiera

  • @DiddiLeija

2021.6.12

  • Fix crash on Python 2 when reusing environments. (#450)

  • Hide staleness check behind a feature flag. (#451)

  • Group command-line options in --help message by function. (#442)

  • Avoid polluting tests with a .nox directory. (#445)

2021.6.6

  • Add option --no-install to skip install commands in reused environments. (#432)

  • Add option --force-python as shorthand for --python and --extra-python. (#427)

  • Do not reuse environments if the interpreter or the environment type has changed. (#418, #425, #428)

  • Allow common variations in session names with parameters, such as double quotes instead of single quotes. Session names are considered equal if they produce the same Python AST. (#417, #434)

  • Preserve the order of parameters in session names. (#401)

  • Allow @nox.parametrize to select the session Python. (#413)

  • Allow passing posargs when scheduling another session via session.notify. (#397)

  • Prevent sessions from modifying each other’s posargs. (#439)

  • Add nox.needs_version to specify Nox version requirements. (#388)

  • Add session.name to get the session name. (#386)

  • Gracefully shutdown child processes. (#393)

  • Decode command output using the system locale if UTF-8 decoding fails. (#380)

  • Fix creation of Conda environments when venv_params is used. (#420)

  • Various improvements to Nox’s type annotations. (#376, #377, #378)

  • Remove outdated notes on Windows compatibility from the documentation. (#382)

  • Increase Nox’s test coverage on Windows. (#300)

  • Avoid mypy searching for configuration files in other directories. (#402)

  • Replace AppVeyor and Travis CI by GitHub Actions. (#389, #390, #403)

  • Allow colorlog <7.0.0. (#431)

  • Drop contexter from test requirements. (#426)

  • Upgrade linters to the latest version. (#438)

2020.12.31

  • Fix NoxColoredFormatter.format (#374)

  • Use conda remove to clean up existing conda environments (#373)

  • Support users specifying an undeclared parametrization of python via --extra-python (#361)

  • Support double-digit minor version in python keyword (#367)

  • Add py.typed to manifest.in (#360)

  • Update Nox to latest supported python versions. (#362)

  • Decouple merging of --python with nox.options from --sessions and --keywords (#359)

  • Do not merge command-line options in place (#357)

2020.8.22

  • conda_install and install args are now automatically double-quoted when needed. (#312)

  • Offline mode is now auto-detected by default by conda_install. This allows users to continue executing Nox sessions on already installed environments. (#314)

  • Fix the default paths for Conda on Windows where the python.exe found was not the correct one. (#310)

  • Add the --add-timestamp option (#323)

  • Add Session.run_always(). (#331)

2020.5.24

  • Add new options for venv_backend, including the ability to set the backend globally. (#326)

  • Fix various typos in the documentation. (#325, #326, #281)

  • Add session.create_tmp. (#320)

  • Place all of Nox’s command-line options into argparse groups. (#306)

  • Add the --pythons command-line option to allow specifying which versions of Python to run. (#304)

  • Add a significant amount of type annotations. (#297, #294, #290, #282, #274)

  • Stop building universal wheels since we don’t support Python 2. (#293)

  • Add the ability to specify additional options for the virtualenv backend using venv_params. (#280)

  • Prefer importlib.metadata for metadata loading, removing our dependency on pkg_resources. (#277)

  • Add OmegaConf and Hydra to list of projects that use Nox. (#279)

  • Use a more accurate error message, along with the cause, if loading of noxfile runs into error. (#272)

  • Test against Python 3.8. (#270)

  • Fix a syntax highlighting mistake in configuration docs. (#268)

  • Use stdout.isatty to finalize color instead of stdin.isatty. (#267)

2019.11.9

  • Fix example installation call for pip. (#259)

  • Allow colorlog 4. (#257)

  • Order Pythons in descending version in appveyor.yml. (#258)

  • Add link to GitHub Action for Nox. (#255)

  • Use double “`” for inline code. (#254)

  • Add types to _option_set.py. (#249)

  • Add type hints to tasks.py. (#241)

  • Fix typo (virtulenvs). (#247)

  • Replace flake8 sorter with isort. (#242)

  • Pass VIRTUAL_ENV environment variable to commands executed in a virtualenv. (#245)

  • Fix docs to show correct list for parametrize. (#244)

  • Add argcomplete dependency to conda test session. (#240)

2019.8.20

  • Add --verbose for showing the output from all commands. (#174)

  • Immediately exit if unknown arguments are passed. (#229)

  • Document complex test_virtualenv fixtures. (#236)

  • Resolve to interpreter ‘python’ in PATH if ‘–version’ fits. (#224)

  • Add shell autocomplete. (#228)

  • Add venv as an option for venv_backend. (#231)

  • Add gdbgui to list of projects. (#235)

  • Add mypy to Nox’s lint. (#230)

  • Add pipx to projects that use Nox. (#225)

  • Add session(venv_backend='conda') option to use Conda environments. (#217, #221)

  • Document how to call builtins on Windows. (#223)

  • Replace imp.load_source() with importlib. (#214)

  • Fix incorrect type in docstring & replace old-style format string. (#213)

  • Allow specifying stdout and stderr to session.run.

  • Add Salt to the list of projects that use Nox. (#209)

  • Remove Python 2-specific code. (#203, #208)

  • Grammar fixes. (#205, 206, 207)

  • Update Nox’s noxfile.py to use python3.7. (#204)

2019.5.30

  • Add interactive property to session. (#196)

  • Promote contributors to maintainers, add Open Collective details. (#201)

  • Fix funding external link. (#200)

  • Refactor how Nox defines and process options. (#187)

  • Fix typo in tutorial. (#194)

  • Use ‘pytest’ instead of ‘py.test’ in examples and configuration. (#193)

  • Fix some CSS issues on mobile. (#192)

  • Use short form of virtualenv path when creating the virtualenv. (#191)

  • Refresh tutorial and fixup small docs things. (#190)

  • Add the ability to give parametrized sessions a custom ID. (#186)

  • Make –list list all available sessions, not just the selected ones. (#185)

  • Allow providing a friendlier CLI name to sessions. (#170)

  • Add urllib3 to the list of projects that use Nox (#182)

  • Fix documentation link for Docker Cloud vs Hub (#179)

2019.4.11

  • Include changelog in documentation. (#177)

  • Use the relative path of the virtualenv in the “creating virtualenv” log message. (#176)

  • Allow not passing “–upgrade” to session.install and change its default behavior to not upgrade. (#172)

  • Expand environment variables when loading the noxfile from provided path. (#171)

  • Add documentation around using Docker to run Nox. (#164)

  • Don’t colour output if NO_COLOR is set. (#163)

  • Fix tox casing to be consistent with their docs, remove `.`` from pytest. (#160)

  • Update issue templates.

  • Add CODE_OF_CONDUCT.md.

  • Add –install-only flag to install dependencies without running anything (#153)

  • Fix function name in docs. (#155)

  • Allow silent argument to be set in session.install. (#157)

  • Run sessions in the same order specified on the command line. (#152)

2018.10.17

  • Fix bug where empty parametrized sessions would fail. (#151)

2018.10.15

  • Hide the python interpreter on sessions with only one. (#148)

  • Warn when programs not in the virtualenv are used, allow erroring and silencing the warning. (#147)

  • Add –warn-on-external-run flag and the “external” keyword arg to session.run. (#147)

  • Add nox.options which allows specifying command-line configuration in the Noxfile (#145)

  • Add python_requires (>= 3.5) to setup.py.

2018.10.9

Breaking changes:

  • Skip sessions with missing interpreters. Previously, missing interpreters would cause a failed session. Now they just cause a warning. The previous behavior can be used via --error-on-missing-interpreters. (#140)

New features:

  • Add session.python property.

Other changes:

  • Fix some warnings about escape sequences.

  • Group command line args by usage for readability.

  • Blacklist more Tox env vars in nox-to-tox.

  • Documentation fixes, spelling, etc. (#134)

  • Mention stickers in the contributors guide.

  • Mention Invoke as a Nox alternative.

2018.9.14

  • Check for NOXSESSION environment variable (#121)

  • Fix typo in OpenCensus Python (#132)

  • Add new documentation art created by Andrea Caprotti

  • Add Python 3.7 to Travis CI (#129)

2018.8.28

Bugfixes:

  • Adding Session.__slots__. (#128)

  • Don’t modify Virtualenv.interpreter in _resolved_interpreter. (#127)

  • Fix tox-to-nox template.

  • Add the ability to add descriptions to sessions. (#117)

  • Using more specific regex in _resolved_interpreter(). (#119)

New features:

  • Adding support for 32-bit binaries on Windows. (#100)

Internal/testing changes:

  • Storing platform.system() as global in nox.virtualenv. (#124)

  • Fix deploy script for Travis.

  • Run docs on travis. (#122)

  • Documentation style updates.

2018.8.23

Heads up! This is a very big release for Nox. Please read these release notes thoroughly and reach out to us on GitHub if you run into issues.

Breaking changes and other important notes:

  • Nox is now published as “nox” on PyPI. This means that Nox is installed via pip install nox instead of nox-automation. Since the new release makes so many breaking changes, we won’t be updating the old nox-automation package.

  • Nox’s configuration file is now called noxfile.py instead of nox.py.

  • Nox no longer supports Python 2.7. You can still create and run Python 2.7 sessions, but Nox itself must be installed using Python 3.5+.

  • Nox’s behavior has been changed from declarative to imperative. Session actions now run immediately. Existing code to setup session virtualenv, such as session.interpreter will break! Please consult the documentation on how to use @nox.session(python=[...]) to configure virtualenvs for sessions.

  • Nox now uses calver for releases.

  • Support for the legacy naming convention (for example, session_tests) has been removed.

Other changes:

  • Update colorlog dependency range.

  • Update installation command in contributing. (#101)

  • Remove Python 2.x object inheritance. (#109)

  • Fix python syntax error on docs. (#111)

  • Show additional links on PyPI. (#108)

  • Add contributors file. (#113)

  • Run sphinx with -W option. (#115)

  • Using os.pathsep instead of a hardcoded ':'. (#105)

  • Use a configuration file for readthedocs. (#107)

  • Add ‘py’ alias for nox.session(python=...).

  • Fix processing of numeric Python versions that specify a patch version.

  • Use Black to format code.

  • Support invoking Nox using python -m nox.

  • Produce better error message when sessions can’t be found.

  • Fix missing links in README.rst.

  • Remove usage of future imports.

  • Remove usage of six.

  • Make session.install a simple alias for session.run.

  • Refactor nox.command.Command as nox.command.run, reducing complexity.

  • Add list of projects that use Nox.

  • Use witchhazel pygments theme.

v0.19.1

Note:: v0.19.1 was the last version released as “nox-automation” on PyPI. Subsequent releases are published as “nox”.

  • Updates copyright information and contact addresses. No code changes.

v0.19.0

  • Add missing parameter in docs (#89)

  • Don’t skip install commands when reusing existing virtualenvs. (#86)

  • Add –nocolor and –forcecolor options (#85)

  • Simulating unittest.mock backport in the Python 2 standard library. (#81)

  • Fixing tox-to-nox docs reference. (#80)

  • Removing patch of py.exe on AppVeyor. (#74)

  • Adding Python 3.6 to AppVeyor. (#69)

  • Adding AppVeyor badge to README. (#70)

v0.18.2

  • On Windows, use the py.exe launcher (e.g. py.exe -2.7) to locate Python executables. (#53)

v0.18.1

  • Fix Nox not returning a non-zero exit code on failure. (#55)

  • Restore result and report output. (#57)

v0.18.0

  • Blacklist problematic virtualenv environment variables (#49)

  • Use python -m virtualenv to invoke virtualenv (#47)

  • Making sure all Commands use run in __call__. (#48)

  • Addition of session.notify. (#39)

  • Refactor the list of sessions into a manifest class. (#38)

  • Changed some instances of session to be plural (#37)

  • Small documentation updates (#36)