BUG: configparser.NoSectionError: No section: 'versioneer'

[CAlexPac]

Pandas version checks

• I have checked that this issue has not already been reported.

• I have confirmed this bug exists on the latest version of pandas.

• I have confirmed this bug exists on the main branch of pandas.

Reproducible Example

pip install --upgrade pip
pip install numpy cython
git clone https://github.com/pandas-dev/pandas.git
cd pandas
python setup.py install

Issue Description

Cannot install pandas from source.

Expected Behavior

To have the versioneer details in setup.cfg so it will install.

Installed Versions

Replace this line with the output of pd.show_versions()

[lithomas1]

What version of setuptools are you on?

I think you need at least setuptools 61

[MarcoGorelli]

you also need versioneer[toml] installed

[MarcoGorelli]

🤔 should the README still be recommending this actually? https://github.com/pandas-dev/pandas#installation-from-sources

[CAlexPac]

I have setuptools installed.
setuptools 65.5.1

[MarcoGorelli]

I just tried this, and installing versioneer[toml] fixes it

[lithomas1]

I just tried this, and installing versioneer[toml] fixes it

Ah, makes sense. setuptools vendors their own tomli, so that's why it wouldn't be installed.

I feel like maybe pip install . would fix this? versioneer[toml] is already listed in the requires there.

IIRC, python setup.py install is deprecated or something.

[CAlexPac]

Yes, that fixed it.

pip install "versioneer[toml]"
pip install .

Thank you very much.