How To Execute A (safe) Bash Shell Command Within Setup.py?

I use nunjucks for templating the frontend in a python project. Nunjucks templates must be precompiled in production. I don't use extensions or asynchronous filters in the nunjuc

Solution 1:

Pardon the quick self-answer. I hope this helps someone out there in the ether. I want to share this now that I've worked out a solution I'm satisfied with.

Here's a solution that's safe and based on Peter Lamut's write-up. Note that this does not use shell=True in the subprocess invocation. You may bypass grunt-task requirements on your python deployment system and also use this for obfuscation and JS packaging all the same.

from setuptools import setup
from setuptools.command.install import install
import subprocess
import os

classCustomInstallCommand(install):
    """Custom install setup to help run shell commands (outside shell) before installation"""defrun(self):
        dir_path = os.path.dirname(os.path.realpath(__file__))
        template_path = os.path.join(dir_path, 'src/path/to/templates')
        templatejs_path = os.path.join(dir_path, 'src/path/to/templates.js')
        templatejs = subprocess.check_output([
            'nunjucks-precompile',
            '--include',
            '["\\.tmpl$"]',
            template_path
        ])
        f = open(templatejs_path, 'w')
        f.write(templatejs)
        f.close()
        install.run(self)

setup(cmdclass={'install': CustomInstallCommand},
      ...
     )

Solution 2:

I think that the link here encapsulates what you are trying to achieve.