do you know what this line does? ``` skip_install = true ``` On Mon, Feb 17, 2025 at 12:01 PM <code-quality-request@python.org> wrote:

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Today's Topics:

1. Getting tox dependencies from pyproject.toml? (Skip Montanaro)

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Message: 1 Date: Mon, 17 Feb 2025 10:20:48 -0600 From: Skip Montanaro <skip.montanaro@gmail.com> Subject: [code-quality] Getting tox dependencies from pyproject.toml? To: code-quality@python.org Message-ID: <CANc-5Uxcb3Jjo6Uxo9izxBXpMiyuAwm4_ZkpP=vFvAi1Wztdqw@mail.gmail.com> Content-Type: multipart/alternative; boundary="000000000000ecdfd4062e58e964"

I have a small package with several dependencies. From pyproject.toml:

dependencies = [ "atpublic>=3.1", "matplotlib>=3.5.2", "numpy>=1.22", "pandas>=1.5.2", "python-dateutil>=2.8.2", "scipy>=1.15.1", "unum>=4.2.1", "xlrd>=2.0.1", "xlwt>=1.3.0", "openpyxl>=3.1.5", ]

I created a skeletal tox.ini file which allowed me to run my unit tests against several Python versions, as one does. Then I added a lint env:

env_list = py{310,311,312,313},lint

Unfortunately, the virtual environment constructed for the "lint" environment had none of my dependencies. (All the other envs are stable and have all run this package before, so have the necessary dependencies baked in.) To get pylint to shut up about import failures, I had to duplicate that dependency list:

[testenv:lint] description = run linters skip_install = true deps = atpublic>=3.1 matplotlib>=3.5.2 numpy>=1.22 openpyxl>=3.1.5 pandas>=1.5.2 pylint python-dateutil>=2.8.2 scipy>=1.15.1 unum>=4.2.1 xlrd>=2.0.1 xlwt>=1.3.0 commands = pylint csvprogs

Question: Is it possible to avoid this duplication, maybe by having tox stuff in pyproject.toml or at least have tox.ini get dependencies from that?

Thanks,

Skip