Overleaf showing simple graphviz w/nested folders

Question

I have a project with one main.tex file and several *.tex-files stored in a subfolder called "chapters".

My problem is that in one of the chapter files, say chapter-1.tex, I'm trying to insert a graph with the following code:

\begin{sidewaysfigure}
    \digraph[scale=0.5]{abc}{
            rankdir=LR; a->b->c
            a [label=<foo<SUP>bar</SUP>>];
    }
\end{sidewaysfigure}

I have:

(1) Included the package \usepackage[pdf]{graphviz}

(2) Added a latexmkrc with $pdflatex = 'pdflatex --shell-escape'; that is in the root folder with main.tex.

I have a suspicion that Overleaf is not reading my latexmkrc at all. I tested it by altering the timezone ($ENV{'TZ'}='Europe/Zurich';) but none of the \currenttime labels showed the time of the timezone specificed in my latexmkrc (zurich). I even tried to insert a \currenttime in my main file, but that did not show the Zurich time either.

Here is an excerpt of my main file:

\documentclass[runningheads]{llncs}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{datetime}
\usepackage{graphicx}
\usepackage[pdf]{graphviz}

\input{chapters/chapter-1.tex} % In here is the \digraph figure
\input{chapters/chapter-2.tex}

\end{document}

I'm using Overleaf and have followed this guide: Overleaf.

Question

Why am I still getting the "The file abc.pdf hasn’t been created from abc.dot yet. [...]" error when compiling my document? And why isn't overleaf registering my custom latexmkrc file?

Answer 1

(Tom from Overleaf Support here.)

Mostly -shell-escape calls fail if the main document is not in the root folder of the Overleaf project. The same goes for latexmkrc which has to be always placed in the root folder in order to have any effect. Also, note that -shell-escape is enabled by default in Overleaf; there is no need for latexmkrc for these.