Public bug reported:
I recently updated from Ubuntu 25.10 to Ubuntu 26.04. Since then, TortoiseHg no
longer starts with the following error being displayed:
```python
** Mercurial version (7.2). TortoiseHg version (7.0.1)
** Command: --nofork
** CWD: /home/osboxes
** Encoding: UTF-8
** Extensions loaded:
** Python version: 3.14.4 (main, Apr 8 2026, 04:02:31) [GCC 15.2.0]
** System: Linux mmuetzel 7.0.0-15-generic #15-Ubuntu SMP PREEMPT_DYNAMIC Wed
Apr 22 16:06:43 UTC 2026 x86_64
** Qt-5.15.18 PyQt-5.15.11 QScintilla-2.14.1
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/tortoisehg/hgqt/run.py", line 143, in
dispatch
return _runcatch(u, args)
File "/usr/lib/python3/dist-packages/tortoisehg/hgqt/run.py", line 348, in
_runcatch
hglib.parseconfigopts(ui, args)
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
File "/usr/lib/python3/dist-packages/tortoisehg/util/hglib.py", line 1056, in
parseconfigopts
config = dispatchmod._earlyparseopts(ui, args)[b'config']
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<frozen importlib.util>", line 224, in __getattribute__
AttributeError: module 'mercurial.dispatch' has no attribute '_earlyparseopts'.
Did you mean: '_earlysplitopts'?
```
See also the following bug report in upstream TortoiseHg which seems to
summarize the issue pretty well:
https://foss.heptapod.net/mercurial/tortoisehg/thg/-/work_items/6042
TortoiseHg 7.0.1 is incompatible with Mercurial 7.2.
Please, consider cherry-picking the following commits from upstream:
https://foss.heptapod.net/mercurial/tortoisehg/thg/-/commit/37f012cb22ec4faf6f606623294f620d72460d20
https://foss.heptapod.net/mercurial/tortoisehg/thg/-/commit/f2490624e622ef40c02ac6ef7895aceb2b311366
https://foss.heptapod.net/mercurial/tortoisehg/thg/-/commit/d53f631f30323d02c61cd9863b2b0cd55fccef63
https://foss.heptapod.net/mercurial/tortoisehg/thg/-/commit/edb6a9b390eb7f58921f27dae285b8b235bc9acf
https://foss.heptapod.net/mercurial/tortoisehg/thg/-/commit/573e7cfcc152272febdd15963263bf60956f0b4b
Or update to a current head of the upstream repository until a new
version of TortoiseHg is released which adds compatibility with
Mercurial 7.2.
** Affects: tortoisehg (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2155284
Title:
TortoiseHg does not start in Ubuntu 26.04 LTS
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