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499e20c0b2
fail is moving out of Monad and into it's own MonadFail class. This will be enforced in GHC 8.8 (I think). base-compat/base-compat-batteries 0.11.0 have adapted to this, and are approaching stackage nightly (https://github.com/commercialhaskell/stackage/issues/4802). hledger is now ready to build with base-compat-batteries 0.11.0, once all of our deps do (eg aeson). We are still compatible with the older 0.10.x and GHC 7.10.3 as well. For now we are using both fails: - new fail (from Control.Monad.Fail), used in our parsers, imported via base-compat-batteries Control.Monad.Fail.Compat to work with older GHC versions. - old fail (from GHC.Base, exported by Prelude, Control.Monad, Control.Monad.State.Strict, Prelude.Compat, ...), used in easytest's Test, since I couldn't find their existing fail implementation to update. To reduce (my) confusion, these are imported carefully, consistently, and qualified everywhere as Fail.fail and Prelude.fail, with clashing re-exports suppressed, like so: import Prelude hiding (fail) import qualified Prelude (fail) import Control.Monad.State.Strict hiding (fail) import "base-compat-batteries" Prelude.Compat hiding (fail) import qualified "base-compat-batteries" Control.Monad.Fail.Compat as Fail |
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| .. | ||
| Common.hs | ||
| CsvReader.hs | ||
| JournalReader.hs | ||
| LedgerReader.hs.disabled | ||
| TimeclockReader.hs | ||
| TimedotReader.hs | ||