I've inherited some legacy code that uses PGPLOT. Alas, it looks like PGPLOT used to be available as a Simply Fortran package but it no longer seems to be. Might it be possible to have PGPLOT available as a package again?
These days there are certainly quite a few alternatives to PGPLOT out there, so if there's some reason why PGPLOT is now hard to support I'll certainly understand if you've got higher priorities. (That said, I confess I've always had a soft spot for PGPLOT).