`python setup.py check --restructuredtext` fails when a include directive is present.

[flying-sheep]

BPO	31292
Nosy	@merwok, @flying-sheep, @dstufft, @csabella, @miss-islington
PRs	bpo-31292: Fix distutils check --restructuredtext for include directives #3248 bpo-31292: Fixed distutils check --restructuredtext for include directives #10605 [3.7] bpo-31292: Fixed distutils check --restructuredtext for include directives (GH-10605) #12593 [2.7] bpo-31292: Fixed distutils check --restructuredtext for include directives (GH-10605) #12594
Files	check-test.py: Demo script for this issue

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2019-03-27.21:49:22.114>
created_at = <Date 2017-08-28.13:57:45.748>
labels = ['3.7', '3.8', 'type-bug', 'library']
title = '`python setup.py check --restructuredtext` fails when a include directive is present.'
updated_at = <Date 2019-03-27.22:26:00.429>
user = 'https://github.com/flying-sheep'

bugs.python.org fields:

activity = <Date 2019-03-27.22:26:00.429>
actor = 'miss-islington'
assignee = 'none'
closed = True
closed_date = <Date 2019-03-27.21:49:22.114>
closer = 'cheryl.sabella'
components = ['Distutils']
creation = <Date 2017-08-28.13:57:45.748>
creator = 'flying sheep'
dependencies = []
files = ['47104']
hgrepos = []
issue_num = 31292
keywords = ['patch']
message_count = 6.0
messages = ['300953', '301031', '338987', '338989', '338990', '338991']
nosy_count = 5.0
nosy_names = ['eric.araujo', 'flying sheep', 'dstufft', 'cheryl.sabella', 'miss-islington']
pr_nums = ['3248', '10605', '12593', '12594']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue31292'
versions = ['Python 2.7', 'Python 3.7', 'Python 3.8']

[flying-sheep]

If I have a setup.py containing a include directive, and use the command in the title, I get

Traceback (most recent call last):
  [...]
  File "/usr/lib/python3.6/site-packages/docutils/parsers/rst/directives/misc.py", line 59, in run
    source_dir = os.path.dirname(os.path.abspath(source))
  File "/usr/lib/python3.6/posixpath.py", line 369, in abspath
    path = os.fspath(path)
TypeError: expected str, bytes or os.PathLike object, not _io.StringIO

The bug is in this method: distutils.command.check.check._check_rst_data

The first line already hints at it: source_path = StringIO()

StringIO instances aren’t paths, but at least the include directive (docutils.parsers.rst.directives.misc.Include) expects one.

[flying-sheep]

I should have linked the file: distutils/command/check.py

[csabella]

New changeset d5a5a33 by Cheryl Sabella (Philipp A) in branch 'master':
bpo-31292: Fixed distutils check --restructuredtext for include directives (GH-10605)
d5a5a33

[csabella]

Thanks @flying sheep for the PR and @merwok for the review!

[miss-islington]

New changeset 600aca4 by Miss Islington (bot) in branch '2.7':
bpo-31292: Fixed distutils check --restructuredtext for include directives (GH-10605)
600aca4

[miss-islington]

New changeset 9cad523 by Miss Islington (bot) in branch '3.7':
bpo-31292: Fixed distutils check --restructuredtext for include directives (GH-10605)
9cad523