Missing Enum instance for IoSubSystem

[Zubin Duggal]

You can see the branches and tags the commit was a part of.
For this commit, that is the branches ghc-9.12 and master
and the tags ghc-9.12.1-alpha1 ghc-9.12.1-alpha2 ghc-9.12.1-alpha3 ghc-9.12.1-rc1 ghc-9.13-start

So this commit hasn't made it into any release yet and will
be first released in GHC 9.12

On 24/12/04 10:21, Tom Ellis wrote:
>On Wed, Dec 04, 2024 at 03:47:06PM +0530, Zubin Duggal wrote:
>> > But the situation is strange, because it seems like the instance was
>> > removed in 2022:
>> >
>> > https://gitlab.haskell.org/ghc/ghc/-/commit/85b0f87a298c8e54b06a8f8c6ce88669c5cad3bc#f7c61f967f2b5c4951224837ae809183449da146_116_105
>> >
>> > So I don't understand why it still seems to exist in base-4.20.0.1:
>>
>> That patch only landed in April 2024
>
>Ah, that would explain it.  Is there a way of seeing in the repo the
>commit from which a release was made?  I don't see any tags
>corresponding to released versions (although I do see ghc-9.7-start,
>ghc-9.9-start, etc.).
>
>Tom
>
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