In this effort I imported a set of old PCB plugins to be core plugins of pcb-rnd. This makes it easier to keep them up to date, to defeat the bitrot effect. The feature plugins that got imported so far:

• autocrop
• boardflip
• distalign
• distaligntext
• jostle - doesn't work properly
• polycombine
• polystich - segfaults
• teardrops
• renumberblock - as part of the renumber plugin
• smaprtdisperse

The import/export plugins imported over the default set of the last official mainline release [of that time]:

• import_dsn - specctra importer - works with freerouting.net
• export_dsn - specctra exporter - works with freerouting.net
• export_dxf - mechanical cad export - got rewritten from scratch, works now
• export_openscad - 3d modeling - compiles, output sort of works, models not yet imported, got rewritten from scratch, works now
• export_bboard - breadboard exporter - compiles, produces valid-looking output - need tester
• export_ipcd356 - electrical test output - compiles, produces valid-looking output - need tester

Plugins that won't be imported:

• findelement - [query] takes care of that
• findrat - [query] will take care of that
• join-found - not clear what it would do
• lockelements - [query] can select elements then SetFlag() should be able to lock them
• sedrename - [query] will take care of that
• upth2pth - [query] will take care of that
• ratsel - written in C++
• stipple - written in C++