In index.py we were catching requests.exceptions.RetryError and
requests.exceptions.SSLError but then also caught requests.HTTPError.
For consistency catch all of these requests exceptions using the
requests.exceptions path.
With the original `vendored()` implementation and such an initialization sequence:
```
vendored("packaging")
vendored("packaging.version")
```
In `sys.modules`, `pip._vendor.packaging` is correctly connected to the debundled `packaging`, while `pip._vendor.packaging.version` is not, as the latter is `__import__`ed from the existing `pip._vendor.packaging` module. That results in the same issue as https://github.com/pypa/pip/issues/5429 - `pip._vendor.packaging.version.Version` and `packaging.version.Version` cannot be compared.
This patch attempts to fix this issue by skipping `__import__` from the vendored name. This is safe because `vendored()` is called only when `DEBUNDLED = True`, and vendored libraries are already deleted as per [debundling instructions](https://github.com/pypa/pip/blob/master/src/pip/_vendor/README.rst#debundling).
utils.encoding.auto_decode() was broken when decoding Big Endian BOM
byte-strings on Little Endian or vice versa.
The TestEncoding.test_auto_decode_utf_16_le test was failing on Big Endian
systems, such as Fedora's s390x builders. A similar test, but with BE BOM
test_auto_decode_utf_16_be was added in order to reproduce this on a Little
Endian system (which is much easier to come by).
A regression test was added to check that all listed encodings in
utils.encoding.BOMS are valid.
Fixes https://github.com/pypa/pip/issues/6054
________________ test_constraints_local_editable_install_pep518 ________________
...
----------------------------- Captured stdout call -----------------------------
Script result: python -m pip download setuptools wheel -d /tmp/pytest-of-mockbuild/pytest-0/test_constraints_local_editabl0/data/packages
return code: 1
-- stderr: --------------------
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fba7fdeb160>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fba7fdeb0b8>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fba7fdeb4e0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fba7fdeb6d8>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fba7fdeb860>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
Could not find a version that satisfies the requirement setuptools (from versions: )
No matching distribution found for setuptools
_____________ test_pep517_wheels_are_not_confused_with_other_files _____________
...
-- stdout: --------------------
Processing /tmp/pytest-of-mockbuild/pytest-0/test_pep517_wheels_are_not_con0/data/src/withpyproject
Installing build dependencies: started
Installing build dependencies: finished with status 'error'
Complete output from command /tmp/pytest-of-mockbuild/pytest-0/test_pep517_wheels_are_not_con0/workspace/venv/bin/python /builddir/build/BUILDROOT/python-pip-19.0.2-1.fc30.x86_64/usr/lib/python3.7/site-packages/pip install --ignore-installed --no-user --prefix /tmp/pytest-of-mockbuild/pytest-0/test_pep517_wheels_are_not_con0/workspace/tmp/pip-build-env-3un7dqu3/overlay --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- setuptools wheel:
Collecting setuptools
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fb7cf5a8898>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fb7cf5b9588>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fb7cf5b9470>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fb7cf5b9278>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fb7cf5b9208>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
Could not find a version that satisfies the requirement setuptools (from versions: )
No matching distribution found for setuptools
________________________ test_upgrade_argparse_shadowed ________________________
...
----------------------------- Captured stdout call -----------------------------
Script result: python -m pip install argparse==1.3
return code: 1
-- stderr: --------------------
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7ff07d6db240>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/argparse/
Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7ff07d6db358>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/argparse/
Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7ff07d6db400>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/argparse/
Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7ff07d6db518>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/argparse/
Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7ff07d6c7710>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/argparse/
Could not find a version that satisfies the requirement argparse==1.3 (from versions: )
No matching distribution found for argparse==1.3
The main setuptools PEP 517 backend is intended for
explicit usage in `pyproject.toml`, when the project
authors can ensure that their `setup.py` runs without
that directory being implicitly on `sys.path`.
For implicit usage, setuptools now offers a separate
legacy backend that more closely mimics direct
execution of the `setup.py` script.
The message looks like this:
File "setup.py" not found. Directory cannot be installed in editable
mode: <absolute-dir-path>
(A "pyproject.toml" file was found, but editable mode currently
requires a setup.py based build.)
