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dev: fix liftA2, Foldable1 build errors with ghc <9.6 [#2395]

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This commit is contained in:
Simon Michael 2025-09-02 08:18:09 +01:00
parent 4f03d22501
commit bc55e1c58f
2 changed files with 10 additions and 0 deletions
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6
hledger-lib/Hledger/Data/PeriodData.hs
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@ -19,7 +19,11 @@ module Hledger.Data.PeriodData
, tests_PeriodData
) where
#if MIN_VERSION_base(4,18,0)
import Data.Foldable1 (Foldable1(..))
#else
import Control.Applicative (liftA2)
#endif
import qualified Data.IntMap.Strict as IM
import qualified Data.IntSet as IS
#if !MIN_VERSION_base(4,20,0)
@ -48,10 +52,12 @@ instance Foldable PeriodData where
foldl f z (PeriodData h as) = foldl f (f z h) as
foldl' f z (PeriodData h as) = let fzh = f z h in fzh `seq` foldl' f fzh as
#if MIN_VERSION_base(4,18,0)
instance Foldable1 PeriodData where
foldrMap1 f g (PeriodData h as) = foldr g (f h) as
foldlMap1 f g (PeriodData h as) = foldl g (f h) as
foldlMap1' f g (PeriodData h as) = let fh = f h in fh `seq` foldl' g fh as
#endif
instance Traversable PeriodData where
traverse f (PeriodData h as) = liftA2 PeriodData (f h) $ traverse f as

4
hledger-lib/Hledger/Reports/MultiBalanceReport.hs
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@ -1,3 +1,4 @@
{-# LANGUAGE CPP #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE NamedFieldPuns #-}
@ -33,6 +34,9 @@ module Hledger.Reports.MultiBalanceReport (
)
where
#if !MIN_VERSION_base(4,18,0)
import Control.Applicative (liftA2)
#endif
import Control.Monad (guard)
import Data.Foldable (toList)
import Data.List (sortOn)