Allow pure Wayland to get default XDG webbrowser

[jtheoof]

BPO	40767
Nosy	@orsenthil, @miss-islington, @jtheoof
PRs	bpo-40767: Allow pure Wayland to get default XDG web browser #20382 [3.9] bpo-40767: Allow pure Wayland to get default XDG web browser (GH-20382) #20607 [3.8] bpo-40767: Allow pure Wayland to get default XDG web browser (GH-20382) #20608 [3.7] bpo-40767: Allow pure Wayland to get default XDG web browser (GH-20382) #20609

^{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 = 'https://github.com/orsenthil'
closed_at = <Date 2020-06-03.13:11:06.116>
created_at = <Date 2020-05-25.11:38:08.721>
labels = ['type-bug', '3.8', '3.9', '3.10', '3.7', 'library']
title = 'Allow pure Wayland to get default XDG webbrowser'
updated_at = <Date 2020-06-03.13:11:06.114>
user = 'https://github.com/jtheoof'

bugs.python.org fields:

activity = <Date 2020-06-03.13:11:06.114>
actor = 'orsenthil'
assignee = 'orsenthil'
closed = True
closed_date = <Date 2020-06-03.13:11:06.116>
closer = 'orsenthil'
components = ['Library (Lib)']
creation = <Date 2020-05-25.11:38:08.721>
creator = 'Jeremy Attali'
dependencies = []
files = []
hgrepos = []
issue_num = 40767
keywords = ['patch']
message_count = 5.0
messages = ['369872', '370662', '370667', '370668', '370669']
nosy_count = 4.0
nosy_names = ['orsenthil', 'python-dev', 'miss-islington', 'Jeremy Attali']
pr_nums = ['20382', '20607', '20608', '20609']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue40767'
versions = ['Python 3.7', 'Python 3.8', 'Python 3.9', 'Python 3.10']

[jtheoof]

In a pure Wayland environment (without xwayland), the DISPLAY environment variable is not present. Therefore the call to xdg-settings get default-browser is not made. So the webbrowser behaviour is different between X11 and Wayland environment. I'm working on a fix, should submit a GitHub PR soon.

❯ export | grep DISPLAY
WAYLAND_DISPLAY=wayland-0
❯ python -c "import webbrowser; print(webbrowser.get())"
<webbrowser.GenericBrowser object at 0x7f6f1b755160>

[miss-islington]

New changeset c822efe by Jeremy Attali in branch 'master':
bpo-40767: Allow pure Wayland to get default XDG web browser (GH-20382)
c822efe

[miss-islington]

New changeset 911c35d by Miss Islington (bot) in branch '3.7':
bpo-40767: Allow pure Wayland to get default XDG web browser (GH-20382)
911c35d

[miss-islington]

New changeset 5b8787e by Miss Islington (bot) in branch '3.8':
bpo-40767: Allow pure Wayland to get default XDG web browser (GH-20382)
5b8787e

[miss-islington]

New changeset 74a1fce by Miss Islington (bot) in branch '3.9':
bpo-40767: Allow pure Wayland to get default XDG web browser (GH-20382)
74a1fce