Breakage with mtl-2.3-rc4

[andreasabel]

Looks like equivalence will break with mtl-2.3 (see haskell/mtl#86):

[2 of 2] Compiling Data.Equivalence.Monad ( src/Data/Equivalence/Monad.hs, dist/build/Data/Equivalence/Monad.o, dist/build/Data/Equivalence/Monad.dyn_o )

src/Data/Equivalence/Monad.hs:293:31: error:
    Not in scope: type constructor or class ‘Error’
    Perhaps you meant ‘ErrorT’ (imported from Control.Monad.Trans.Error)
    Perhaps you want to add ‘Error’ to the import list in the import of
    ‘Control.Monad.Trans.Error’ (src/Data/Equivalence/Monad.hs:55:1-41).
    |
293 | instance (MonadEquiv c v d m, Error e) => MonadEquiv c v d (ErrorT e m) where
    |                               ^^^^^
Error: cabal: Failed to build equivalence-0.3.5

ErrorT is deprecated in favor of ExceptT.

[andreasabel]

I am looking into a fix, PR will be forthcoming.

[andreasabel]

PR is #15

[andreasabel]

I also revised the existing versions on hackage so that they are excluded by mtl >= 2.3:

Revising "equivalence-0.2.4.cabal" (equivalence-0.2.4~0)

• Changed the library component's library dependency on 'base'
  from >=4 && <5
  to >=4 && <4.12

• Changed the library component's library dependency on 'mtl'
  from -any
  to <2.3

Revising "equivalence-0.2.5.cabal" (equivalence-0.2.5~0)

• Changed the library component's library dependency on 'base'
  from >=4 && <5
  to >=4 && <4.12

• Changed the library component's library dependency on 'mtl'
  from -any
  to <2.3

Revising "equivalence-0.2.6.cabal" (equivalence-0.2.6~1)

• Changed the library component's library dependency on 'base'
  from >=4 && <5
  to >=4 && <4.12

• Changed the library component's library dependency on 'mtl'
  from -any
  to <2.3

Revising "equivalence-0.3.0.1.cabal" (equivalence-0.3.0.1~0)

• Changed the library component's library dependency on 'base'
  from >=4 && <5
  to >=4 && <4.12

• Changed the library component's library dependency on 'mtl'
  from >=2.2.1
  to >=2.2.1 && <2.3

Revising "equivalence-0.3.1.cabal" (equivalence-0.3.1~0)

• Changed the library component's library dependency on 'base'
  from >=4 && <5
  to >=4 && <4.12

• Changed the library component's library dependency on 'mtl'
  from >=2.0.1
  to >=2.2.1 && <2.3

• Changed the library component's library dependency on 'transformers'
  from >=0.2
  to >=0.2 && <0.6

Revising "equivalence-0.3.2.cabal" (equivalence-0.3.2~1)

• Changed the library component's library dependency on 'base'
  from >=4 && <5
  to >=4 && <4.12

• Changed the library component's library dependency on 'mtl'
  from >=2.0.1
  to >=2.2.1 && <2.3

• Changed the library component's library dependency on 'transformers'
  from >=0.2
  to >=0.2 && <0.6

Revising "equivalence-0.3.3.cabal" (equivalence-0.3.3~0)

• Changed the library component's library dependency on 'base'
  from >=4 && <5
  to >=4 && <4.13

• Changed the library component's library dependency on 'mtl'
  from >=2.0.1
  to >=2.2.1 && <2.3

• Changed the library component's library dependency on 'transformers'
  from >=0.2
  to >=0.2 && <0.6

Revising "equivalence-0.3.4.cabal" (equivalence-0.3.4~0)

• Changed the library component's library dependency on 'base'
  from >=4 && <5
  to >=4 && <4.13

• Changed the library component's library dependency on 'mtl'
  from >=2.0.1
  to >=2.2.1 && <2.3

• Changed the library component's library dependency on 'transformers'
  from >=0.2
  to >=0.2 && <0.6

Revising "equivalence-0.3.5.cabal" (equivalence-0.3.5~0)

• Changed the library component's library dependency on 'mtl'
  from >=2.0.1
  to >=2.2.1 && <2.3

• Changed the library component's library dependency on 'transformers'
  from >=0.2
  to >=0.2 && <0.6

• Changed the test suite 'test' component's library dependency on 'mtl'
  from >=2.0.1
  to >=2.2.1 && <2.3

Revising "equivalence-0.3.cabal" (equivalence-0.3~0)

• Changed the library component's library dependency on 'base'
  from >=4 && <5
  to >=4 && <4.12

• Changed the library component's library dependency on 'mtl'
  from >=2.2.1
  to >=2.2.1 && <2.3

[andreasabel]

Btw, if you are looking for a co-maintainer, I'd volunteer!