Happy to provide context. Aria was a project at Envos to bring the productivity of Interlisp to Common Lisp. Not necessarily a port of the tools to Interlisp but a re-implementation. My understanding is that it was primarily funded by Fuji Xerox, but I could be wrong on that. It used Franz Common Lisp as the underlying language implementation, PCL/CLOS as the object system, CLIM layered on Andrew as the UI. If you look in the dev-env directory you’ll see a lot of the same concepts (grapher, code analysis, structure editor, etc). The migration tool was pretty cool, it converted Interlisp code to CL.
Unfortunately it looks like the Postscript manual pages aren’t on the tape, which is a bit of a bummer. The documentation was written in a typesetting format (think of TeX/LaTeX//Scribe) and requires the typesetter to convert to PS.
When Envos folded all the Medley stuff moved to Venue and the Aria project lived on just long enough to release the minimum requirements as the Beta release to fulfill the contract requirements.
IMHO, the project was hampered by the fact that CLIM was very immature and mired in a lot of political problems, Franz didn’t see the point in it since they figured their native Emacs/CLI tools were sufficient to the task, CLOS was still PCL, Andrew didn’t have high adoption outside of CMU.
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