These core Perl modules are required Digest::SHA MIME::Base64 The library depends on these extra modules: Config::Tiny Net::IDN::Encode Net::LDAP IO::Socket::SSL (for ldaps:// URIs) The PSGI application depends on these additional modules: Authen::SASL Cache::FastMmap CHI Crypt::URandom HTML::Template CGI Plack::Builder Plack::Session::State::Cookie Plack::Session::Store::Cache URI::Escape On Debian GNU/Linux systems, the following packages cover the dependencies: libconfig-tiny-perl libnet-idn-encode-perl libnet-ldap-perl libio-socket-ssl-perl libauthen-sasl-perl libcache-fastmmap-perl libchi-perl libcrypt-urandom-perl libhtml-template-perl libcgi-pm-perl libplack-perl libplack-middleware-session-perl liburi-perl For development, one can use plackup(1p) as follows to launch the PSGI application: plackup -E development -R ./config.ini \ --host 127.0.0.1 --port 5000 ./run.psgi