Gimp 2.99: How to write python plugin that doesn't require an existing open image?

[Charlweed (Charlweed Hymerfan)]

I am trying to re-write a GIMP 2.10 python plugin that processes a directory, scanning for image files. I’ve just started, and I am stuck implementing my plugin’s do_create_procedure method.
If I write do_create_procedure to return a Gimp.ImageProcedure, then my plugin will not “run” because there is no current image. The error message is:
GIMP-Error: Procedure 'plug-in-selectinimagefile-python' has been called with an invalid ID for argument 'image'. Most likely a plug-in is trying to work on an image that doesn't exist any longer.

If I write do_create_procedure to return a Gimp.Procedure, then my plugin will not load/register. The error message is:
attempted to install <Image> procedure "plug-in-selectinimagefile-python" which does not take the standard <Image> plug-in's arguments: (GimpRunMode).

Now I am trying trial and error with other procedure sub-classes, so far no luck. I am also guessing at trying a different menu prefix that is not “Image” but no other choices seem to correctly describe my plugin.

What might be the best way to do this?

[jboerema (Jacob Boerema)]

For GIMP 2.99 you can add this line to tell that you don’t care about images:

procedure.set_sensitivity_mask(Gimp.ProcedureSensitivityMask.ALWAYS)

[Charlweed (Charlweed Hymerfan)]

Thanks! That seems to have worked!