Alien-nghttp2 Alien::nghttp2 provides the nghttp2 HTTP/2 C library to Perl distributions via Alien::Base. It can either use an existing system installation or build nghttp2 from source when needed. Installation cpanm Alien::nghttp2 Or from a checkout: perl Makefile.PL make make test make install The module exposes standard Alien::Base methods such as `cflags`, `libs`, and `dynamic_libs` for consumers that need to compile or link against nghttp2. See `lib/Alien/nghttp2.pm` for API details and usage examples.