install cpan for latexindent
$ export PERL5LIB="$HOME/.cpan/build:$PERL5LIB"
$ cpan Log::Log4perl File::HomeDir YAML::Tiny Unicode::GCString
$ export PERL5LIB="$HOME/.cpan/build:$PERL5LIB"
$ cpan Log::Log4perl File::HomeDir YAML::Tiny Unicode::GCString