[tex-live] tikz graph drawing libraries are not found

[Maximilian Nöthe]

Hi all,

Today I installed a TL2018 on Linux and no tikz graph drawing libraries
are found anymore.

Here is a minimal document, compile with lualatex.
`The error is ! Package pgf Error: Graph drawing library 'trees' not found.`
No other libraries can be found. The files are there as far as I can
see, e.g.

/home/maxnoe/.local/texlive/2018/texmf-dist/tex/generic/pgf/graphdrawing/tex/pgflibrarygraphdrawing.trees.code.tex


```
\documentclass{scrartcl}


\usepackage{tikz}
\usetikzlibrary{graphdrawing}
\usegdlibrary{trees}



\begin{document}

Hello World

\end{document}
```

Any Ideas?

Cheers
Max

-- 
PHD Candidate
Astroparticle Physics
TU Dortmund