guard against failures with old versions of 'either'

This commit is contained in:
Alp Mestanogullari 2014-12-19 18:26:03 +01:00
parent 0fea0ddbf9
commit df5c8d9843

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@ -34,7 +34,7 @@ library
, aeson , aeson
, attoparsec , attoparsec
, bytestring , bytestring
, either , either >= 4.3
, http-types , http-types
, network-uri >= 2.6 , network-uri >= 2.6
, safe , safe