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76 lines
2.3 KiB
Python
76 lines
2.3 KiB
Python
import os
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import sys
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from distutils.sysconfig import get_python_lib
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from setuptools import setup
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CURRENT_PYTHON = sys.version_info[:2]
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REQUIRED_PYTHON = (3, 6)
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# This check and everything above must remain compatible with Python 2.7.
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if CURRENT_PYTHON < REQUIRED_PYTHON:
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sys.stderr.write("""
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==========================
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Unsupported Python version
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==========================
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This version of Django requires Python {}.{}, but you're trying to
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install it on Python {}.{}.
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This may be because you are using a version of pip that doesn't
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understand the python_requires classifier. Make sure you
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have pip >= 9.0 and setuptools >= 24.2, then try again:
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$ python -m pip install --upgrade pip setuptools
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$ python -m pip install django
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This will install the latest version of Django which works on your
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version of Python. If you can't upgrade your pip (or Python), request
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an older version of Django:
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$ python -m pip install "django<2"
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""".format(*(REQUIRED_PYTHON + CURRENT_PYTHON)))
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sys.exit(1)
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# Warn if we are installing over top of an existing installation. This can
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# cause issues where files that were deleted from a more recent Django are
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# still present in site-packages. See #18115.
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overlay_warning = False
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if "install" in sys.argv:
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lib_paths = [get_python_lib()]
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if lib_paths[0].startswith("/usr/lib/"):
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# We have to try also with an explicit prefix of /usr/local in order to
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# catch Debian's custom user site-packages directory.
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lib_paths.append(get_python_lib(prefix="/usr/local"))
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for lib_path in lib_paths:
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existing_path = os.path.abspath(os.path.join(lib_path, "django"))
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if os.path.exists(existing_path):
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# We note the need for the warning here, but present it after the
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# command is run, so it's more likely to be seen.
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overlay_warning = True
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break
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setup()
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if overlay_warning:
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sys.stderr.write("""
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========
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WARNING!
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========
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You have just installed Django over top of an existing
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installation, without removing it first. Because of this,
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your install may now include extraneous files from a
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previous version that have since been removed from
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Django. This is known to cause a variety of problems. You
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should manually remove the
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%(existing_path)s
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directory and re-install Django.
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""" % {"existing_path": existing_path})
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