Support containers version 0.8.

[jonathanknowles]

Version 0.8 of the containers package has been released, but hashable currently has an upper bound of < 0.8:

hashable/hashable.cabal

Lines 86 to 89 in e29ed1a

	build-depends:
	, base >=4.18.0.0 && <4.22
	, bytestring >=0.11.5.3 && <0.13
	, containers >=0.6.7 && <0.8

I was able to successfully build and test with:

cabal test all \
    --constraint=containers==0.8 \
    --allow-newer=hashable:containers

Which indicates that solving this issue might just a require a bump of the upper bound for containers.

[ivanperez-keera]

Also running into this.

It's currently blocking: Copilot-Language/copilot#603

[ivanperez-keera]

Does this require changes to dependencies or the code, or can the upper bound just be bumped?

[jonathanknowles]

Does this require changes to dependencies or the code, or can the upper bound just be bumped?

@ivanperez-keera I think it just requires a bump to the upper bound.

I was able to successfully build and test this with:

cabal test all \
    --constraint=containers==0.8 \
    --allow-newer=hashable:containers

[ivanperez-keera]

@phadej Would you accept such a PR?

[phadej]

Most likely I won't bother with containers-0.8 support until GHC is shipping it. Or if when haskell/cabal#9669 is resolved in some satisfible way.

If you want sooner containers-0.8 support, help those matters instead.