Bug in running external program (-shell-escape)

[Paul A. Rubin]

On 2/24/23 05:56, Mario D wrote:
> It looks like I have found a bug using the external library in lyx:
> if you pass the option
> \tikzexternalize[prefix=some_dir/]
> then lyx is not able to create the subdir "some_dir" in its temporary 
> working dir under the /tmp tree, which results in a compilation error 
> since lyx is not able to write the necessary files.
>
> If you don't pass any prefix option, the file compiles correctly, 
> since lyx can write all necessary files in the relative temp dir.
>
> A MWE is the attached file, which results in the following latex source.
>
> M
>
> ---------------------------------------------------------------------------------------------------------------------------------
> %% LyX 2.3.6 created this file.  For more info, see http://www.lyx.org/.
> %% Do not edit unless you really know what you are doing.
> \documentclass{article}
> \usepackage[T1]{fontenc}
> \usepackage[latin9]{inputenc}
>
> \makeatletter
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%% User specified LaTeX commands.
> \usepackage{tikz}
> \usetikzlibrary{external}
> \tikzexternalize[prefix=picts/]
>
> \makeatother
>
> \begin{document}
> \[
>  \begin{tikzpicture}
>   \node (0) at (0,0) {$1$};
>   \node (1) at (0,1) {$2$};
>   \draw[-] (0) edge (1);
>  \end{tikzpicture}
> \]
> \end{document}
> ---------------------------------------------------------------------------------------------------------------------------------
>
I just added this to Trac: https://www.lyx.org/trac/ticket/12685.

Paul