GNU bug report logs - #43151
Calibre ebook-viewer requires QtWebEngine

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Andreas Enge <andreas <at> enge.fr>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#43151: closed (Calibre ebook-viewer requires QtWebEngine)
Date: Tue, 08 Sep 2020 20:13:02 +0000

[Message part 1 (text/plain, inline)]

Your message dated Tue, 8 Sep 2020 22:11:44 +0200
with message-id <20200908201144.GA25269 <at> jurong>
and subject line Re: bug#43151: Resolve Calibre run-time dependency
has caused the debbugs.gnu.org bug report #43151,
regarding Calibre ebook-viewer requires QtWebEngine
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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43151: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=43151
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From: Andreas Enge <andreas <at> enge.fr>
To: bug-guix <at> gnu.org
Subject: Calibre ebook-viewer requires QtWebEngine
Date: Tue, 1 Sep 2020 11:48:17 +0200

Hello,

when trying to view an epub using ebook-viewer from the calibre package
(or by directly clicking on an epub in calibre), the program fails with
the message:
   Could not find QtWebEngineProcess

I see that commit d79ec4fd343bc2a72652aa3a4b4ae14bd8df88ac has added
python2-pyqtwebengine and qtwebengine to the calibre inputs, but this
is apparently not enough.

I did not git bisect to see where the problem first appeared, but could
do so if this would help debugging.

Andreas

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From: Andreas Enge <andreas <at> enge.fr>
To: Brendan Tildesley <mail <at> brendan.scot>
Cc: 42885 <at> debbugs.gnu.org, 43249-done <at> debbugs.gnu.org,
 Prafulla Giri <pratheblackdiamond <at> gmail.com>, 43151-done <at> debbugs.gnu.org
Subject: Re: bug#43151: Resolve Calibre run-time dependency
Date: Tue, 8 Sep 2020 22:11:44 +0200

Hello,

On Mon, Sep 07, 2020 at 06:15:15PM +1000, Brendan Tildesley wrote:
> Your patch also works I think but it will wrap the programs twice, so
> you will get calibre, .calibre-real, and ..calibre-real-real, etc for
> every program, which seems ugly. My patch reproduces the same PYTHONPATH
> that is set in python-build-system in addition to wrapping PYTHONPATH
> (unless I made a mistake), although at the cost of code duplication. I
> leave it to you and who ever is reviewing this to decide which way is
> more correct and push one, haha.

thanks to both of your for your patches! I just pushed Brendan's, which
wraps only once at the price of copy-pasting from another package. I confirm
that it works, also to click on an epub file from within calibre. Closing
the two bugs asking about qtwebengine.

Concerning the update, is mathjax a required input now, or could we just
leave it out and update nevertheless?

Andreas

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