[tlbuild] Some issues building asy

[Angelo Graziosi]

> Il 23/03/2023 22:01 Karl Berry ha scritto:
> 
> Another option would be to tell the asy configure --prefix=.../inst/
> and then setting TEXMFMAIN shouldn't be necessary. I think?
> There's no harm in installing the asy support files in the inst tree.

This seems to work..

Thanks,
 Angelo.