scheme@gentoo.org Gentoo Scheme Project Guile is a library designed to help programmers create flexible applications. Using Guile in an application allows programmers to write plug-ins, or modules (there are many names, but the concept is essentially the same) and users to use them to have an application fit their needs. Include garbage collector freelist debugging code Include malloc debugging code Enable deprecated features (implied by deprecated) enable merely discouraged features Include networking interfaces Include regular expression interfaces https://www.gnu.org/software/guile/manual/html_node/index.html guile Guile effective version 3.0. Guile effective version 2.2.