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HugoDaniel / timerep

Reading and parsing time in Haskell
zlib License
9 stars 6 forks source link

Cabal Install error with GHC 7.4.2 on Mac 10.7 #2

Closed tatac1 closed 9 years ago

tatac1 commented 12 years ago

Hi Hugo

I got the error message when installing,

Resolving dependencies... Configuring rfc3339-1.0.4... Preprocessing library rfc3339-1.0.4... Building rfc3339-1.0.4... [1 of 1] Compiling Data.Time.RFC3339 ( Data/Time/RFC3339.hs, dist/build/Data/Time/RFC3339.o )

Data/Time/RFC3339.hs:60:10: Illegal instance declaration for RFC3339 String' (All instance types must be of the form (T a1 ... an) where a1 ... an are *distinct type variables*, and each type variable appears at most once in the instance head. Use -XFlexibleInstances if you want to disable this.) In the instance declaration forRFC3339 String' cabal: Error: some packages failed to install: rfc3339-1.0.4 failed during the building phase. The exception was: ExitFailure 1

I have confirm " {-# LANGUAGE TypeSynonymInstances, FlexibleInstances #-}" in the RFC3339.hs, it's no wired...

How can i solve it?

Tarrasch commented 12 years ago

I think this is due to that you should use the newer timerep package and not the rfc3339 package which I think is deprecated.

k0ral commented 9 years ago

Closed since it's about a deprecated package using an unsupported GHC version.