BetaCalendars Calendar Layout provides RPM builds of a dependency-free C++17 library and command-line toolkit for deterministic Gregorian month grids and printable page geometry. It supports all seven week starts, natural and fixed six-week layouts, undated grids, A4/A5/US Letter/US Legal paper, SVG/JSON/CSV output, and broad Gregorian validation. The package works offline and is licensed MIT. Upstream project: https://www.betacalendars.com/
