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Wrong version constraint on transformers #8

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josefs opened this issue Jan 5, 2014 · 1 comment
Closed

Wrong version constraint on transformers #8

josefs opened this issue Jan 5, 2014 · 1 comment

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@josefs
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josefs commented Jan 5, 2014

Currently the constraint for transformers is (>=0.2.0.0 && <0.4), but that's wrong, because mmorph depends on the module Control.Applicative.Backwards which was only introduced in version 0.3.0.0 in transformers.

Expect a pull request soon.
josefs added a commit to josefs/Haskell-MMorph-Library that referenced this issue Jan 5, 2014
@josefs
Fix constraints for transformers package, fixes Gabriella439#8
4091644 
The constraint on transformers was too lax, including version 0.2.0.0. But since mmorph depends on Control.Applicative.Backwards which was introduced in version 0.3.0.0 it's not OK to compile againts 0.2.0.0
josefs added a commit to josefs/Haskell-MMorph-Library that referenced this issue Jan 6, 2014
@josefs
Remove the instance for Backwards to fix Gabriella439#8
5230ba6 
Importing Control.Applicative.Backwards means that we have to depend on
transformers version 0.3 or higher. This change lets us keep the more lax
constraint in transformers.
@Gabriella439
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Fixed in version 1.0.2, which now compiles against transformers <= 0.3.0.0.

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@josefs @Gabriella439