bug#41052: core-updates: LyX: Errors and messages at start up (no textclasses found)

[Efraim Flashner]

This should now be fixed with the recent commits relating to Lyx (I
can't remember which one fixed this! Probably
03a7b67b314286a9185535f5ecbb7cde97ae2c97 with the changes to calling
python in scripts)

On Sun, May 03, 2020 at 03:34:53PM +0000, sirgazil via Bug reports for GNU Guix 
wrote:
> It seems that LyX is missing its default classes, which results in lots of 
> messages when starting the application. 
> 
> In my case, this happens in core-updates using a virtual machine. I can't 
> reproduce this problem in my real machine, maybe because I have some 
> leftovers from previous installations of LyX, I don't know.
> 
> 
> ## Steps to reproduce
> 
> 1. guix system vm os-config.scm (with GNOME and LyX)
> 2. Run the resulting virtual machine
> 3. Log in to the GNOME desktop
> 4. Press Alt + F2, type lyx2.3 and hit Enter to start LyX
> 
> 
> ## Expected result
> 
> LyX starts without errors and displays the "Welcome to LyX" document.
> 
> 
> ## Unexpected result
> 
> A message about a missing a textclass appears:
> 
> https://multimedialib.files.wordpress.com/2020/05/guix-lyx-no-textclasses-message-2020-05-03-1.png
> 
> Clicking on "Reconfigure" results in an error message about an article class 
> not found:
> 
> https://multimedialib.files.wordpress.com/2020/05/guix-lyx-document-class-not-found-error-2020-05-03.png
> 
> Clicking "Ok" results in another message. This time about Cite engine not 
> available:
> 
> https://multimedialib.files.wordpress.com/2020/05/guix-lyx-cite-engine-not-available-message-2020-05-03.png
> 
> Clicking "Ok" here finally takes you to the "Welcome to LyX document".
> 
> https://multimedialib.files.wordpress.com/2020/05/guix-lyx-welcome-document-2020-05-03.png
> 
> At this point, however, I don't want to use the application because I would 
> expect many things to fail. I didn't check if there is any workaround (e.g. 
> installing packages that provide the missing classes and cite engine).
> 
> 
> ## System information
> 
> ```
> $ lyx2.3 --version
> LyX 2.3.3 (2019-06-10)
> CMake Build
> 
> $ LANG=C guix describe
> Generation 78 May 02 2020 18:00:20    (current)
>   guix 7b07852
>     repository URL: https://git.savannah.gnu.org/git/guix.git
>     branch: core-updates
>     commit: 7b07852ddb334c92bcef69666f21c599f1f0fa79
>   sirgazil-x ef6ac93
>     repository URL: https://gitlab.com/sirgazil/guix-channel-x.git
>     branch: master
>     commit: ef6ac9331a7847fdec6f0eb199524b1b755ba0df
> ```
> 
> 
> ---
> https://sirgazil.bitbucket.io/
> 
> 
> 
> 
> 
> 

-- 
Efraim Flashner   <efraim@flashner.co.il>   אפרים פלשנר
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