How to install masscan
Masscan is scanning utility. Treat this as an orientation note. Anything prescriptive should come from the maintainers directly.
Distribution in practice
In practice this means one of a handful of routes: an operating system package index, a registry tied to a language, a version manager, or a source tree built with the project's own tooling. Which one applies is decided by the platform and by the maintainers.
Who is behind it
Direction comes from the people who write the code. Their decisions on releases and support are the ones that matter.
Prior checks
Establish which platforms the current release actually targets. Support ranges shift, and the newest release is frequently not the one suited to an older machine.
Interpreting what you see
Most unexpected behaviour traces back to resolution rather than to the project. An older copy sitting earlier in the path, or a version manager pointing somewhere else, will do it every time.
About these notes
This is a notes-only site. Projects stay with their maintainers; nothing is reproduced here.
On reading release notes
Release notes are the cheapest way to catch a breaking change before it surprises you. They usually list platform shifts and removed defaults in the first few lines.