To make your plugin appear in the QGIS 4 Ready Plugins list, simply set qgisMaximumVersion=4.99 (or higher) in your metadata.txt and remove the deprecated supportsQt6 flag.
During the QGIS 4 pre-release period, a temporary metadata flag called supportsQt6 was introduced to let plugin authors signal that their plugin was compatible with Qt 6 and QGIS 4. Plugin authors were encouraged to add supportsQt6=True to their metadata.txt.
Following the changes described in qgis/QGIS#65146 and qgis/QGIS#65168, the supportsQt6 flag has been removed from QGIS core and is no longer recognised. Declaring supportsQt6=True in your metadata has no effect and plugins that relied solely on this flag to appear in the QGIS 4 plugin list have been removed from that list.
QGIS 4 compatibility is now determined exclusively by the qgisMaximumVersion field in metadata.txt. A plugin version is shown in the QGIS 4 Ready Plugins list when qgisMaximumVersion ≥ 4.0.
Examples:
qgisMinimumVersion=3.22, qgisMaximumVersion=4.99
→ Listed for QGIS 3.22+ and QGIS 4.x
qgisMinimumVersion=4.0, qgisMaximumVersion=4.99
→ Listed for QGIS 4.x only
qgisMinimumVersion=3.22, qgisMaximumVersion=3.99
→ Not listed (QGIS 3 only)
Open your metadata.txt and make the following changes:
[general]
# Set qgisMaximumVersion to cover QGIS 4.x
qgisMaximumVersion=4.99
# Remove or delete this line — it is no longer used:
# supportsQt6=True
Before bumping qgisMaximumVersion, make sure your plugin actually works with QGIS 4. Key things to check:
PyQt5 imports with PyQt6 (or use the QGIS-provided compatibility shim).Upload the updated plugin package on the QGIS Plugins repository. Your plugin will appear in the QGIS 4 Ready Plugins list once the upload is approved.
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