Post #1669974

New post on altering the source of #guix packages using the substitute* procedure. It searches through files using a #guile regular expression and replaces it with the specified text. This is the most common change that packages make - substitute* is used 9500 times! Common uses are altering test requirements, or slackening library dependencies. https://www.futurile.net/2026/04/18/guix-package-source-alterations-using-substitute/ Post covers the procedures uses, and then a tour through different examples from the Guix archive!