How to override distutils commands by cmdclass in a cfg file?

user_2952170 0
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I am migrating the configurations from setup.py to setup.cfg but I have a problem with cmdclass keyword. I looked into setuptools docs and it seems like this keyword is not documented or supported. So I tried options.entry_points instead. But I keep getting invalid command error.

Here is what I have:

setup.cfg

[options.entry_points]
console_scripts =
    install = CustomInstall:run

and

setup.py

from setuptools.command.install import install
from setuptools import setup

class CustomInstall(install):
    def run(self):
        print('overriden install command')

setup()

The result was just a normal install command. However, I would like to replicate the behaviour that I get when I run:

# setup.py
from setuptools.command.install import install
from setuptools import setup

class CustomInstall(install):
    def run(self):
        print('overriden install command')

setup(cmdclass= {"install": CustomInstall})

which gives an overriden install command.

python-packaging setup.py distutils setuptools
4 Answers

I don't believe it's possible. Leave it in the setup.py.

user_111382590

It is not supported.

See this PR for more information.

user_140337650

What [options.entry_points] and console_scripts does is create shell commands which run specific functions in your code base. These commands will work once your package has been installed in an environment.

So in your example, a new shell command install would be created, and it would run the run() function from a package called CustomInstall.

Based on looking at source code, I would guess the correct syntax is instead:

[global]
commands =
  install = mypackage.CustomInstall

but I haven't been able to make it work either yet.

akaihola_157700

The cmdclass keyword in setup.cfg has been fixed in v54. It is still not documented though.

Now you can do:

setup.cfg (only part)

[options]
cmdclass =
    install = build.MyInstall

build.py

from setuptools.command.install import install

class MyInstall(install):

    def run(self):
        print("Custom install start")
        super().run()
        print("Custom install done")

Both files are located in the root of project.

When you run python setup.py install, the custom install script gets triggered. This setup is equivalent to the setup(cmdclass=...) you used.

user_196467350
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