setup.py

from setuptools import setup, find_packages
import os, shutil, platform
import sysconfig
from distutils.ccompiler import new_compiler
from distutils.errors import DistutilsPlatformError

# warn user if setup.py is run from a different directory
dir_of_file = os.path.dirname(__file__)
cwd = os.getcwd()
if dir_of_file != cwd:
    # We should make this warning obsolete..
    print(f"WARNING: setup.py is being run from a different directory than the install script. This can cause strange errors"
          f"Current directory='{cwd}', dir of file='{dir_of_file}'")



try:
    error_msg = None
    from Cython.Build import cythonize
    import Cython.Compiler.Options
    Cython.Compiler.Options.annotate = True
    compile_available = True

    if platform.system() == "Windows":
        try:
            new_compiler().initialize()
        except AttributeError:
            compile_available = False
            error_msg = "No compatible windows compiler"
    else:
        compile_available = 'CXX' in sysconfig.get_config_vars()
        if not compile_available:
            error_msg = "No compiler found"

except ImportError:
    error_msg = "Cython could not be imported"
    compile_available = False
except DistutilsPlatformError:
    # 'new_compiler().initialize()' failed.
    error_msg = "No compiler found"
    compile_available = False

#compile_available = False  # uncomment this to force the compilation.

files_to_compile = ["botbowl/core/pathfinding/cython_pathfinding.pyx"]

install_requires_packages = [
          'numpy==1.24.3',
          'untangle==1.2.1',
          'Flask==2.3.2',
          'gym==0.26.2',
          'Jinja2==3.1.2',
          'docker==6.1.1',
          'python-interface==1.6.1',
          'stopit==1.1.2',
          'requests==2.30.0',
          'Cython==3.0.0b2',
          'pytest==7.3.1',
          'matplotlib==3.7.1',
          'more_itertools==9.1.0'
]

kwargs = {
    'name': 'botbowl',
    'version': '1.1.0',
    'include_package_data': True,
    'install_requires': install_requires_packages,
    'packages': find_packages(),
    'zip_safe': False
}

if compile_available:
    kwargs['ext_modules'] = cythonize(files_to_compile, annotate=True)

setup(**kwargs)

if compile_available:
    # Grab all compiled modules and copy into source folders
    compiled_file_type = ".pyd" if platform.system() == "Windows" else ".so"
    copied_files = 0
    for root, dirs, files in os.walk('./build/'):
        for file in files:
            if file.endswith(compiled_file_type):
                if platform.system() == "Windows":
                    root = root.replace('\\', '/')
                from_file = f"{root}/{file}"
                to_file = "./botbowl/" + root.split('/botbowl/')[1] + "/" + str(file)
                print(f"copying '{from_file}' -> '{to_file}'")
                shutil.copyfile(from_file, to_file)
                copied_files += 1

    #assert copied_files == len(files_to_compile), f"Wrong number if files copied. " \
    #                                              f"Supposed to copy {len(files_to_compile)} files " \
    #                                              f"but {copied_files} was copied. Probably a bug!"
    print("\nYou've built botbowl with cython.")
else:
    print(f"You've built botbowl without cython compilation, error message='{error_msg}'. "
          f"Check docs/installation.md for details.")