GNU bug report logs - #70910
xdot has stopped working after update to 1.3

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Ada Stevenson <adanskana <at> gmail.com>
Subject: bug#70910: closed (xdot has stopped working after update to 1.3)
Date: Thu, 16 May 2024 22:27:02 +0000

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Your bug report

#70910: xdot has stopped working after update to 1.3

which was filed against the guix package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 70910 <at> debbugs.gnu.org.

-- 
70910: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=70910
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Sharlatan Hellseher <sharlatanus <at> gmail.com>
To: 70910-done <at> debbugs.gnu.org 
Subject: xdot has stopped working after update to 1.3
Date: Thu, 16 May 2024 23:25:22 +0100

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Hi,

Pushed as 0846eaecd45783bf40e8dc67b0c16f71068524b7 to master.

--
Oleg

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From: Ada Stevenson <adanskana <at> gmail.com>
To: bug-guix <at> gnu.org
Cc: Ludovic Courtès <ludo <at> gnu.org>
Subject: xdot has stopped working after update to 1.3
Date: Mon, 13 May 2024 04:44:29 +0000

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Hi Guix,

I was trying to use `xdot` to view to output of `guix graph` (`guix 
graph bash | xdot -`). However, it crashed instantly with the following 
stack trace:

> dot: No such file or directory
> Traceback (most recent call last):
>   File 
> "/gnu/store/r9mrqfpci65hsypgm7r5kpzxlm6fcd1l-xdot-1.3/bin/.xdot-real", 
> line 33, in <module>
>     sys.exit(load_entry_point('xdot==1.3', 'gui_scripts', 'xdot')())
>   File 
> "/gnu/store/r9mrqfpci65hsypgm7r5kpzxlm6fcd1l-xdot-1.3/lib/python3.10/site-packages/xdot/__main__.py", 
> line 80, in main
>     win.set_dotcode(sys.stdin.buffer.read())
>   File 
> "/gnu/store/r9mrqfpci65hsypgm7r5kpzxlm6fcd1l-xdot-1.3/lib/python3.10/site-packages/xdot/ui/window.py", 
> line 712, in set_dotcode
>     if self.dotwidget.set_dotcode(dotcode, filename):
>   File 
> "/gnu/store/r9mrqfpci65hsypgm7r5kpzxlm6fcd1l-xdot-1.3/lib/python3.10/site-packages/xdot/ui/window.py", 
> line 148, in set_dotcode
>     if self._set_dotcode(dotcode, filename, center=center):
>   File 
> "/gnu/store/r9mrqfpci65hsypgm7r5kpzxlm6fcd1l-xdot-1.3/lib/python3.10/site-packages/xdot/ui/window.py", 
> line 134, in _set_dotcode
>     xdotcode = self.run_filter(dotcode)
>   File 
> "/gnu/store/r9mrqfpci65hsypgm7r5kpzxlm6fcd1l-xdot-1.3/lib/python3.10/site-packages/xdot/ui/window.py", 
> line 129, in run_filter
>     return xdotcode
> UnboundLocalError: local variable 'xdotcode' referenced before assignment

Using `guix time-machine` I was able to identify the regression commit 
as 2aeb9faa421635c0531d96658414e5bf288a3142 
<http://git.savannah.gnu.org/cgit/guix.git/commit/?id=2aeb9faa421635c0531d96658414e5bf288a3142> 
(when Ludo' updated it to 1.3). Using `xdot` within the time machine 
inside the parent commit works.

I've cc'd Ludo' and hopefully we can fix this!

Warmly,

Ada

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