[pstricks] PSTricks and texlive-2019

[Juergen Rose]

I have here a small test file (sin_pi_4__1.tex): 

\documentclass{article}
\usepackage{pstricks-add}

\begin{document}

\begin{pspicture}(-1.5,-0.5)(4.5,5.5)
\psplot[algebraic=true,plotpoints=100]{0}{Pi 4 div}{sin(x)}
\psaxes{->}(0,0)(-0.5,-1.5)(5.5,1.5) 
\end{pspicture}

\end{document}

'xelatex sin_pi_4__1.tex' fails with:
...
`pst-fp' v0.05, 2010/01/17 (hv))
(/usr/share/texmf-site/tex/generic/pgf/utilities/pgfutil-common.tex
(/usr/share/texmf-site/tex/generic/pgf/utilities/pgfutil-common-
lists.tex))
(/usr/share/texmf-site/tex/generic/pgf/utilities/pgfkeys.code.tex
(/usr/share/texmf-
site/tex/generic/pgf/utilities/pgfkeysfiltered.code.tex))
(/usr/share/texmf-site/tex/generic/pgf/utilities/pgffor.code.tex
Loading [

! LaTeX Error: Missing \begin{document}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.10 \ProvidesPackageRCS[v
                          \pgfversion] $Header:
/cvsroot/pgf/pgf/generic/pgf...
defectiv
? q


A sin_pi_4__0.pdf is a