Bug#1084123: haskell-libmpd: FTBFS: Variable not in scope

[Sebastian Ramacher]

Source: haskell-libmpd
Version: 0.10.0.0-2
Severity: serious
Tags: ftbfs
Justification: fails to build from source (but built successfully in the past)
X-Debbugs-Cc: sramacher at debian.org

https://buildd.debian.org/status/fetch.php?pkg=haskell-libmpd&arch=amd64&ver=0.10.0.0-2%2Bb3&stamp=1727373231&raw=0

[10 of 48] Compiling Network.MPD.Commands.Parse ( src/Network/MPD/Commands/Parse.hs, dist-ghc/build/specs/specs-tmp/Network/MPD/Commands/Parse.o )

src/Network/MPD/Commands/Parse.hs:25:14: error: [GHC-88464]
    Variable not in scope:
      foldM
        :: (Count -> (ByteString, ByteString) -> Either String Count)
           -> t2 -> [(ByteString, ByteString)] -> Either String Count
    Suggested fix:
      Perhaps use one of these:
        ‘foldl’ (imported from Prelude),
        ‘UTF8.foldl’ (imported from Data.ByteString.UTF8),
        ‘foldr’ (imported from Prelude)
   |
25 | parseCount = foldM f def . toAssocList
   |              ^^^^^

src/Network/MPD/Commands/Parse.hs:35:22: error: [GHC-88464]
    Variable not in scope:
      foldM
        :: (Device -> (a1, ByteString) -> Either String Device)
           -> t1 -> [(ByteString, ByteString)] -> Either String Device
    Suggested fix:
      Perhaps use one of these:
        ‘foldl’ (imported from Prelude),
        ‘UTF8.foldl’ (imported from Data.ByteString.UTF8),
        ‘foldr’ (imported from Prelude)
   |
35 | parseOutputs = mapM (foldM f def)
   |                      ^^^^^

src/Network/MPD/Commands/Parse.hs:47:14: error: [GHC-88464]
    Variable not in scope:
      foldM
        :: (Stats -> (a0, ByteString) -> Either String Stats)
           -> t0 -> [(ByteString, ByteString)] -> Either String Stats
    Suggested fix:
      Perhaps use one of these:
        ‘foldl’ (imported from Prelude),
        ‘UTF8.foldl’ (imported from Data.ByteString.UTF8),
        ‘foldr’ (imported from Prelude)
   |
47 | parseStats = foldM f def . toAssocList
   |              ^^^^^

src/Network/MPD/Commands/Parse.hs:72:26: error: [GHC-88464]
    Variable not in scope:
      foldM
        :: (Song -> (ByteString, ByteString) -> Either String Song)
           -> Song -> [(ByteString, ByteString)] -> Either String Song
    Suggested fix:
      Perhaps use one of these:
        ‘foldl’ (imported from Prelude),
        ‘UTF8.foldl’ (imported from Data.ByteString.UTF8),
        ‘foldr’ (imported from Prelude)
   |
72 |     ("file", path):ys -> foldM f (defaultSong (Path path)) ys
   |                          ^^^^^

Cheers
-- 
Sebastian Ramacher