Packages with the charts use flag

app-office / calligra : KDE Office Suite

  • Build chartshape plugin for creating business charts with dev-libs/kdiagram

dev-python / pyside2 : Python bindings for the Qt framework

  • Build QtCharts module

dev-qt / qt-docs : Qt5 documentation, for use with Qt Creator and other tools

  • Install documentation for dev-qt/qtcharts

www-apps / nikola : A static website and blog generator

  • Support chart generation through dev-python/pygal