dev-cpp/muParser:=

!qt6?
      ( dev-libs/quazip:=[qt5
            (+)
      ] dev-qt/qtconcurrent:5 dev-qt/qtcore:5 dev-qt/qtgui:5 dev-qt/qtnetwork:5[ssl] dev-qt/qtopengl:5 dev-qt/qtprintsupport:5 dev-qt/qtquickcontrols2:5 dev-qt/qtsql:5[sqlite] dev-qt/qtsvg:5 dev-qt/qtwidgets:5 )

qt6?
      ( dev-libs/quazip:=[qt6
            (-)
      ] dev-qt/qtbase[concurrent,gui,network,opengl,sql,sqlite,ssl,widgets] dev-qt/qtdeclarative:6 dev-qt/qtsvg:6 )

opencascade?
      ( sci-libs/opencascade:= )

sys-libs/zlib
virtual/opengl

dev-cpp/muParser:=
dev-qt/qtbase:6[concurrent,gui,network,opengl,sql,sqlite,ssl,widgets]
dev-qt/qtdeclarative:6
dev-qt/qtsvg:6
media-libs/libglvnd[X]
sys-libs/zlib
virtual/glu

opencascade?
      ( sci-libs/opencascade:= )

dev-cpp/muParser:=
>=dev-libs/quazip-1.3-r2:=[qt6
      (+)
]
dev-qt/qtbase:6[concurrent,gui,network,opengl,sql,sqlite,ssl,widgets]
dev-qt/qtdeclarative:6
dev-qt/qtsvg:6
media-libs/libglvnd[X]
sys-libs/zlib
virtual/glu

opencascade?
      ( sci-libs/opencascade:= )