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56 lines
1.6 KiB
Python
56 lines
1.6 KiB
Python
import os
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import site
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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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# Allow editable install into user site directory.
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# See https://github.com/pypa/pip/issues/7953.
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site.ENABLE_USER_SITE = "--user" in sys.argv[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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========
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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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"""
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% {"existing_path": existing_path}
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)
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