Bug#1041793: ocamlviz: Syntax error during build

[Bastian Germann]

Source: ocamlviz
Version: 1.01-6
Severity: important

https://buildd.debian.org/status/fetch.php?pkg=ocamlviz&arch=all&ver=1.01-6&stamp=1642843755&raw=0
shows an error during the build:
   dh_ocamldoc -i
File "debian/libocamlviz-ocaml-dev/usr/lib/ocaml/ocamlviz/camlp4/pa_ocamlviz.ml", line 34, 
characters 6-8:
34 |     | <:binding< $x$ and $y$ >> ->
           ^^
Error: Syntax error

I do not know ocaml well enough to judge if it is important or not but file 
this anyway.