[mercury-users] io.set_globals and uniqueness

[Michael Day]

Hi Julien,

> On a related note, recent rotds contain support for `:- mutable'
> declarations that can act as a replacement for storing things in
> the I/O state.

Right, I think we will want to switch to that once we upgrade to a newer
release of Mercury.

(In the meantime I'm still curious about the uniqueness restriction on
set_globals though! :)

Cheers,

Michael

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