symboltype == hybrid?

[Kanahiro]

symboltype == hybrid is not supported yet.

• What kind of layer has such symbol?
• How are children-SymbolLayer of hybrid symbol? (symbol-layer types...)

[bordoray]

Hybrid is related to Geometry generator symbol.

children-SymbolLayer are generic Marker, Line, or fill as in specs

lyr[0].renderer().symbol()[0].layerType()
'GeometryGenerator'

lyr[0].renderer().symbol()[0].type()
<SymbolType.Hybrid: 3>

lyr[0].renderer().symbol()[0].symbolType()
<SymbolType.Marker: 0>

Geometry generator use case by Yamazaki https://qiita.com/KEI_YAMA/items/c01b0a434d340924302b

[Kanahiro]

Hybrid is related to Geometry generator symbol.

Thank you for investigation, we can set very low priority to hybrid same to GeometryGenerator because hybrid could be used on GeometryGenerator but we have no plan to support this.