[tex-live] Making lua modules findable

[Ralf Meyer]

Dear texlive developers,

with luatex it becomes possible to embed lua modules in luatex 
documents.  Many such modules are listed at luarocks.org, and quite a 
few can be useful in luatex.  For normal users, this is too complicated 
in texlive 2017 because of search path differences.  I suggest to change 
the configuration of kpathsea in a new release of texlive so that luatex 
searches lua modules also in the standard folders for lua modules.  This 
is currently not the case, which creates an extra hurdle to use 
general-purpose lua modules in luatex documents.  On my ubuntu system, 
luarocks installs modules in /usr/local/share/lua and 
/usr/local/lib/lua. And lua -e "print(package.path)" and lua -e 
"print(package.cpath)" shows several more paths.  Or maybe you know an 
even better way to make lua modules in these folders findable by luatex 
as automatically as possible.

Yours,

Ralf Meyer