The LV2 plugins from mod-pitchshifter (Capo, Drop , Super Whammy, Harmonizer...) don't appear in Guitarix.
Is it for the same reason they don't appear in Ardour ?
Ardour says that about them:
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#powerOf2BlockLength' in '2Voices'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#fixedBlockLength' in '2Voices'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#fixedBlockLength' in 'Capo'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#powerOf2BlockLength' in 'Capo'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#fixedBlockLength' in 'Drop'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#powerOf2BlockLength' in 'Drop'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#fixedBlockLength' in 'Harmonizer'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#powerOf2BlockLength' in 'Harmonizer'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#powerOf2BlockLength' in 'Harmonizer2'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#fixedBlockLength' in 'Harmonizer2'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#fixedBlockLength' in 'HarmonizerCS'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#powerOf2BlockLength' in 'HarmonizerCS'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#fixedBlockLength' in 'Super Capo'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#powerOf2BlockLength' in 'Super Capo'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#fixedBlockLength' in 'Super Whammy'.
Ardour: [WARNING]: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#powerOf2BlockLength' in 'Super Whammy'.
The LV2 plugins from mod-pitchshifter (Capo, Drop , Super Whammy, Harmonizer...) don't appear in Guitarix. Is it for the same reason they don't appear in Ardour ? Ardour says that about them: