Package: graphviz
Version: 14.0.5-2
Severity: normal
Control: tags -1 ftbfs
dot has started emitting an error when the Helvetica font is
requested. I observed the error building fenics-basix, where dot is
used by doxygen to generate image files for the docs, but I can
reproduce the problem with a small example:
$ cat >test.dot << EOF
graph test_graph
{
node [fontname=Helvetica];
a -- b;
}
EOF
$ dot test.dot -Tpng -o test.png
Error: fontconfig: Didn't find expected font family. Perhaps URW Type 1 fonts
need installing?
Error: fontconfig: Didn't find expected font family. Perhaps URW Type 1 fonts
need installing?
$ echo $?
1
Running dot with -v suggests hardcoding might be the problem,
fontname: "Helvetica" resolved to: [internal hard-coded]
fontconfig itself knows where Helvetica is:
$ fc-match Helvetica
NimbusSans-Regular.otf: "Nimbus Sans" "Regular"
NimbusSans-Regular.otf is installed by fonts-urw-base35 at
/usr/share/fonts/opentype/urw-base35/NimbusSans-Regular.otf
So it looks like the error is coming from dot's hard-coded handling of
the font, not from fontconfig as such.
The bug is a problem since it causes the client programs like doxygen
to return an error, which causes packages to FTBFS.
