Can't install using Cabal 3.10.2.1 + GHC 9.8.2.

error.txt

Configuring library for yi-language-0.19.0..
Preprocessing library for yi-language-0.19.0..
Building library for yi-language-0.19.0..
[ 1 of 10] Compiling Paths_yi_language ( dist/build/autogen/Paths_yi_language.hs, dist/build/Paths_yi_language.o, dist/build/Paths_yi_language.dyn_o )
[ 2 of 10] Compiling Yi.Style         ( src/Yi/Style.hs, dist/build/Yi/Style.o, dist/build/Yi/Style.dyn_o )
[ 3 of 10] Compiling Yi.Style.Library ( src/Yi/Style/Library.hs, dist/build/Yi/Style/Library.o, dist/build/Yi/Style/Library.dyn_o )
[ 4 of 10] Compiling Yi.Utils         ( src/Yi/Utils.hs, dist/build/Yi/Utils.o, dist/build/Yi/Utils.dyn_o )

src/Yi/Utils.hs:101:20-23: warning: [GHC-63394] [-Wx-partial]
    In the use of ‘head’
    (imported from Prelude, but defined in GHC.List):
    "This is a partial function, it throws an error on empty lists. Use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
    |
101 |           prefix = head heads
    |                    ^^^^
[ 5 of 10] Compiling Yi.Buffer.Basic  ( src/Yi/Buffer/Basic.hs, dist/build/Yi/Buffer/Basic.o, dist/build/Yi/Buffer/Basic.dyn_o )
[ 6 of 10] Compiling Yi.Region        ( src/Yi/Region.hs, dist/build/Yi/Region.o, dist/build/Yi/Region.dyn_o )
[ 7 of 10] Compiling Yi.Syntax        ( src/Yi/Syntax.hs, dist/build/Yi/Syntax.o, dist/build/Yi/Syntax.dyn_o )

src/Yi/Syntax.hs:126:76-79: warning: [GHC-63394] [-Wx-partial]
    In the use of ‘head’
    (imported from Prelude, but defined in GHC.List):
    "This is a partial function, it throws an error on empty lists. Use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
    |
126 |                   newResult = if null recomputed then oldResult else snd $ head recomputed
    |                                                                            ^^^^
[ 8 of 10] Compiling Yi.Lexer.Alex    ( src/Yi/Lexer/Alex.hs, dist/build/Yi/Lexer/Alex.o, dist/build/Yi/Lexer/Alex.dyn_o )
[ 9 of 10] Compiling Yi.Regex         ( src/Yi/Regex.hs, dist/build/Yi/Regex.o, dist/build/Yi/Regex.dyn_o )

src/Yi/Regex.hs:84:38-39: warning: [GHC-83475] [-Wunused-record-wildcards]
    No variables bound in the record wildcard match are used
    Suggested fix: Omit the ‘..’
   |
84 |                    seOptions = opts, .. }) = do put re
   |                                      ^^

src/Yi/Regex.hs:144:1-76: warning: [GHC-62161] [-Wincomplete-uni-patterns]
    Pattern match(es) are non-exhaustive
    In a pattern binding:
        Patterns of type ‘Maybe Regex’ not matched: Nothing
    |
144 | Just emptyRegex = makeRegexOptsM defaultCompOpt defaultExecOpt "[[:empty:]]"
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[10 of 10] Compiling Yi.Lexer.Compilation ( dist/build/Yi/Lexer/Compilation.hs, dist/build/Yi/Lexer/Compilation.o, dist/build/Yi/Lexer/Compilation.dyn_o )

dist/build/Yi/Lexer/Compilation.hs:274:50-51: error: [GHC-83865]
    • Couldn't match expected type ‘Int16#’ with actual type ‘Int#’
    • In the fifth argument of ‘alex_scan_tkn’, namely ‘sc’
      In the expression:
        alex_scan_tkn user__ input__ 0# input__ sc AlexNone
      In the expression:
        case alex_scan_tkn user__ input__ 0# input__ sc AlexNone of
          (AlexNone, input__')
            -> case alexGetByte input__ of
                 Nothing -> AlexEOF
                 Just _ -> AlexError input__'
          (AlexLastSkip input__'' len, _) -> AlexSkip input__'' len
          (AlexLastAcc k input__''' len, _)
            -> AlexToken input__''' len (alex_actions ! k)
    |
274 |   = case alex_scan_tkn user__ input__ 0# input__ sc AlexNone of
    |                                                  ^^

dist/build/Yi/Lexer/Compilation.hs:(304,1)-(337,67): error: [GHC-83865]
    Couldn't match type ‘Int#’ with ‘Int16#’
    Expected: t1
              -> t2
              -> Int#
              -> AlexInput
              -> Int16#
              -> AlexLastAcc
              -> (AlexLastAcc, AlexInput)
      Actual: t1
              -> t2
              -> Int#
              -> AlexInput
              -> Int#
              -> AlexLastAcc
              -> (AlexLastAcc, AlexInput)
    |
304 | alex_scan_tkn user__ orig_input len input__ s last_acc =
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^...

dist/build/Yi/Lexer/Compilation.hs:319:27-30: error: [GHC-83865]
    • Couldn't match expected type ‘Int#’ with actual type ‘Int32#’
    • In the first argument of ‘(+#)’, namely ‘base’
      In the expression: base +# ord_c
      In an equation for ‘offset’: offset = (base +# ord_c)
    |
319 |                 offset = (base +# ord_c)
    |                           ^^^^

dist/build/Yi/Lexer/Compilation.hs:322:73-77: error: [GHC-83865]
    • Couldn't match expected type ‘Int#’ with actual type ‘Int16#’
    • In the first argument of ‘(==#)’, namely ‘check’
      In the first argument of ‘tagToEnum#’, namely ‘(check ==# ord_c)’
      In the second argument of ‘(&&)’, namely
        ‘(tagToEnum# (check ==# ord_c))’
    |
322 |                 new_s = if GTE(offset,0#) && EQ(check,ord_c)
    |                                                                         ^^^^^

dist/build/Yi/Lexer/Compilation.hs:327:13-15: error: [GHC-83865]
    • Couldn't match expected type ‘Int16#’ with actual type ‘Int#’
    • In the pattern: -1#
      In a case alternative: -1# -> (new_acc, input__)
      In the expression:
        case new_s of
          -1# -> (new_acc, input__)
          _ -> alex_scan_tkn
                 user__ orig_input
                 (if c < 0x80 || c >= 0xC0 then (len +# 1#) else len) new_input
                 new_s new_acc
    |
327 |             -1# -> (new_acc, input__)
    |             ^^^

src/Yi/Lexer/common.hsinc:33:45-46: error: [GHC-83865]
    • Couldn't match expected type ‘Int16#’ with actual type ‘Int#’
    • In the fifth argument of ‘alex_scan_tkn'’, namely ‘sc’
      In the expression: alex_scan_tkn' user input 0# input sc AlexNone
      In the expression:
        case alex_scan_tkn' user input 0# input sc AlexNone of
          (AlexNone, input', lookahead)
            -> case alexGetByte input of
                 Nothing -> (AlexEOF, lookahead)
                 Just _ -> (AlexError input', lookahead)
          (AlexLastSkip input'' len, _, lookahead)
            -> (AlexSkip input'' len, lookahead)
          (AlexLastAcc k input'' len, _, lookahead)
            -> (AlexToken input'' len (alex_actions ! k), lookahead)
   |
33 |   = case alex_scan_tkn' user input 0# input sc AlexNone of
   |                                             ^^

src/Yi/Lexer/common.hsinc:(47,1)-(73,61): error: [GHC-83865]
    Couldn't match type ‘Int#’ with ‘Int16#’
    Expected: t1
              -> t2
              -> Int#
              -> AlexInput
              -> Int16#
              -> AlexLastAcc
              -> (AlexLastAcc, AlexInput, Int)
      Actual: t1
              -> t2
              -> Int#
              -> AlexInput
              -> Int#
              -> AlexLastAcc
              -> (AlexLastAcc, AlexInput, Int)
   |
47 | alex_scan_tkn' user orig_input len input s last_acc =
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^...

src/Yi/Lexer/common.hsinc:56:25-28: error: [GHC-83865]
    • Couldn't match expected type ‘Int#’ with actual type ‘Int32#’
    • In the first argument of ‘(+#)’, namely ‘base’
      In the expression: base +# ord_c
      In an equation for ‘offset’: offset = (base +# ord_c)
   |
56 |           offset     = (base +# ord_c)
   |                         ^^^^

src/Yi/Lexer/common.hsinc:59:73-77: error: [GHC-83865]
    • Couldn't match expected type ‘Int#’ with actual type ‘Int16#’
    • In the first argument of ‘(==#)’, namely ‘check’
      In the first argument of ‘tagToEnum#’, namely ‘(check ==# ord_c)’
      In the second argument of ‘(&&)’, namely
        ‘(tagToEnum# (check ==# ord_c))’
   |
59 |           new_s      = if GEQ_(offset, 0#) && EQ_(check, ord_c)
   |                                                                         ^^^^^

src/Yi/Lexer/common.hsinc:64:11-13: error: [GHC-83865]
    • Couldn't match expected type ‘Int16#’ with actual type ‘Int#’
    • In the pattern: -1#
      In a case alternative: -1# -> (new_acc, input, (I# (new_len)))
      In the expression:
        case new_s of
          -1# -> (new_acc, input, (I# (new_len)))
          _ -> alex_scan_tkn' user orig_input new_len new_input new_s new_acc
   |
64 |           -1# -> (new_acc, input, IBOX(new_len))
   |           ^^^

[josephcsible]

Those errors look like they're from the version of Alex you have installed being too old for your GHC version.

[mfourne]

#1136 might be related, but I couldn't reproduce it before. Since #1136 fixes most of the fallout for me and the OP deleted their account, I'm tempted to close this and make a new issue for newer vty. Any comments on this?

[josephcsible]

I like that plan too.