The manpage of Perls prove tool says:
Options in .proverc are specified in the same way as command line options:
# .proverc --state=hot,fast,save -j9
This is not true, a rule specified as
--rules='par=**'
will work on the command line but is not recognized in the .proverc
file. In fact, adding this line to .proverc
will disable parallel testing for all files.
The solution is simple: Replace the first equal sign with a blank and specify rules inside of
.proverc
as follows: