Formatter for Bison Input Files

Hello,

having gotten used to using clang-format in C and C++ as well as black 
in Python, I would like to try and write a file formatter for a 
different language. Getting started with that as well as having 
implemented some example grammars for a lecture, I am missing that kind 
of tool for Bison as well. I was wondering if there is such an automatic 
formatter for Bison input files. I found this 
https://github.com/pingcap/tidb/blob/master/parser/goyacc/format_yacc.go, 
but was not able to build it (at least on the first try). If you know 
any other tools that provide a formatting feature for Bison, please let 
me know.

Thanks!

Julian