If you are writing about something that has to be installed on the reader’s machine there has been something that has become annoying. Please do not provide distribution based instructions for installing the software/component/framework. I would prefer it if this was listed on the book’s website, or linked to the platform/distribution’s website. In place of the section, I would prefer a brief history of the component that the book requires. For example, if the framework’s API was forked from another project, if the API would have been motivated by particular problems, and/or who uses it.
Having a website for the installation and configuration would allow it to be updated when the software gets changed. For example, if there was a major break in the API usage, the website could be updated and the user could be warned against using future versions.