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Horizontal composition does not compile anymore in later version of agda #19
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I noticed that some time back, but have not had a chance to dig in. Thanks for the bump, it helps hike the priority. The fix isn't entirely straightforward, and I'd like to report it as a regression too. |
I'm currently trying to bring the library up to date with current stdlib and Agda. Talking about natural transformations -- the problem is with the signature of assoc₀ -- type checker can't infer an implicit parameter for ∘₀. I don't understand how it used to compile before -- inferring the parameter requires functor composition ({F = H ∘F F} {I ∘F G} ):
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And it's even worse in 1.0, it crashes because of irrelevance. |
I am wondering by how much is it broken? is it worth fixing or better start another category theory library from scratch, potentially taking advantages of 2.6? |
(posting this here too, as a PR is not the best place for a discussion)
on quite a few files. I think "from scratch" is now the way to go. |
This library can now be declared obsolete, so closing this as irrelevant. |
In 2.5.4.2, horizontal composition of natural transformations doesn't compile anymore, due to failure of inference of metavariables. I am not sure whose problem it is. Any chance you can take a look?
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