Pip not picking up a custom install cmdclass

Question

so I found this answer to my exact question, but for some reason it's not working:

$ cat /tmp/testinstall/setup.py:

from setuptools.command.install import install  from setuptools import setup   class verifying_install(install):     def run(self):         print "running........"         install.run(self)         print "verifying........"   setup(name='test',       version='1',       py_modules=['test'],       include_package_data=True,       zip_safe=True,       cmdclass={'install': verifying_install} ) 

But then, even though setup.py install works::

➜  /tmp/testinstall $ mktmpenv && cd - This is a temporary environment. It will be deleted when you run 'deactivate'.  (5bc7db7ca1b34ec5)➜  /tmp/testinstall $ python setup.py install running install running........ running build running build_py creating build creating build/lib.linux-x86_64-2.7 copying test.py -> build/lib.linux-x86_64-2.7 running egg_info creating test.egg-info writing test.egg-info/PKG-INFO writing top-level names to test.egg-info/top_level.txt writing dependency_links to test.egg-info/dependency_links.txt writing manifest file 'test.egg-info/SOURCES.txt' reading manifest file 'test.egg-info/SOURCES.txt' writing manifest file 'test.egg-info/SOURCES.txt' running install_lib copying build/lib.linux-x86_64-2.7/test.py -> /home/bwm/.virtualenvs/5bc7db7ca1b34ec5/lib/python2.7/site-packages byte-compiling /home/bwm/.virtualenvs/5bc7db7ca1b34ec5/lib/python2.7/site-packages/test.py to test.pyc running install_egg_info Copying test.egg-info to /home/bwm/.virtualenvs/5bc7db7ca1b34ec5/lib/python2.7/site-packages/test-1-py2.7.egg-info running install_scripts verifying........ 

(Note the running... and verifying...... lines)

pip install of the directory doesn't work:

(5bc7db7ca1b34ec5)➜  /tmp/testinstall $ deactivate && mktmpenv && cd - && pip install . Removing temporary environment: 5bc7db7ca1b34ec5 Removing 5bc7db7ca1b34ec5... New python executable in 4cac61c13d080257/bin/python Installing Setuptools...done. Installing Pip....done. This is a temporary environment. It will be deleted when you run 'deactivate'. /tmp/testinstall Unpacking /tmp/testinstall   Running setup.py egg_info for package from file:///tmp/testinstall  Cleaning up... 

And pip install of the sdist doesn't work either:

(4cac61c13d080257)➜  /tmp/testinstall $ python setup.py sdist running sdist # ..snip.. creating dist Creating tar archive removing 'test-1' (and everything under it) (4cac61c13d080257)➜  /tmp/testinstall $ deactivate && mktmpenv && cd - Removing temporary environment: 4cac61c13d080257 Removing 4cac61c13d080257... New python executable in 9a42f3a58809f1a3/bin/python Installing Setuptools...done. Installing Pip...done. This is a temporary environment. It will be deleted when you run 'deactivate'. /tmp/testinstall  (9a42f3a58809f1a3)➜  /tmp/testinstall $ ls dist test-1.tar.gz (9a42f3a58809f1a3)➜  /tmp/testinstall $ pip install dist/test-1.tar.gz Unpacking ./dist/test-1.tar.gz   Running setup.py egg_info for package from file:///tmp/testinstall/dist/test-1.tar.gz  Cleaning up... 

Note the lack of running... and verifying... words in both of those.

Anybody have any idea what's going on here?

Answer 1

I ran into this problem just now. It looks like there are many different commands that pip install my-package can translate into.

1. setup.py install
2. setup.py egg_info
3. setup.py develop

So you need to handle each of these different cases.

from setuptools.command.install import install from setuptools.command.develop import develop from setuptools.command.egg_info import egg_info  ''' BEGIN CUSTOM INSTALL COMMANDS These classes are used to hook into setup.py's install process. Depending on the context: $ pip install my-package  Can yield `setup.py install`, `setup.py egg_info`, or `setup.py develop` '''   def custom_command():     import sys     if sys.platform in ['darwin', 'linux']:         os.system('./custom_command.sh')   class CustomInstallCommand(install):     def run(self):         install.run(self)         custom_command()   class CustomDevelopCommand(develop):     def run(self):         develop.run(self)         custom_command()   class CustomEggInfoCommand(egg_info):     def run(self):         egg_info.run(self)         custom_command()  ''' END CUSTOM INSTALL COMMANDS  '''  setup(     ...     cmdclass={         'install': CustomInstallCommand,         'develop': CustomDevelopCommand,         'egg_info': CustomEggInfoCommand,     },     ... ) 

Answer 2

I ran into the same problem. Try running pip install -vvv <path> - it may be that the messages are being hidden somehow (I don't know why - not a pip expert!). In any case, you can confirm that the code is being run by having your custom code print to a file somewhere instead of to STDOUT.