NOTICE: Please test "debian bookworm" testplugin_pi debian armhf arm64 or x86_64 and report results!! WE NEED THIS DONE NOW!! or you won't have TP plugins.
Dave...
Go to OpenCPN's plugin manager and import the tarball there, it should add the plugin to the catalog, then install it from there. No need to decompress and copy the contents anywhere manually.
Rick wants to know a) If it will complain duringthe import and b) in case it didn't complain during the import, whether it works after installation.