Warning: The install command is a part of the legacy v1 style of cabal usage.

Please switch to using either the new project style and the new-install
command or the legacy v1-install alias as new-style projects will become the
default in the next version of cabal-install. Please file a bug if you cannot
replicate a working v1- use case with the new-style commands.

For more information, see: https://wiki.haskell.org/Cabal/NewBuild

Resolving dependencies...
Warning: The following packages are likely to be broken by the reinstalls:
parsec-3.1.13.0
Cabal-2.4.0.1
libiserv-8.6.3
ghci-8.6.3
ghc-8.6.3
ghc-boot-8.6.3
Continuing even though the plan contains dangerous reinstalls.
Downloading  bv-0.5
Starting     primitive-0.6.4.0
Starting     base-orphans-0.8
Starting     containers-0.5.11.0
Downloaded   bv-0.5
Starting     bv-0.5
Building     base-orphans-0.8
Building     primitive-0.6.4.0
Building     containers-0.5.11.0
Building     bv-0.5
Completed    base-orphans-0.8
Starting     random-1.1
Building     random-1.1
Completed    bv-0.5
Starting     split-0.2.3.3
Building     split-0.2.3.3
Completed    random-1.1
Downloading  TypeCompose-0.9.14
Downloaded   TypeCompose-0.9.14
Starting     TypeCompose-0.9.14
Building     TypeCompose-0.9.14
Completed    split-0.2.3.3
Downloading  random-strings-0.1.1.0
Downloaded   random-strings-0.1.1.0
Starting     random-strings-0.1.1.0
Building     random-strings-0.1.1.0
Completed    random-strings-0.1.1.0
Completed    TypeCompose-0.9.14
Completed    primitive-0.6.4.0
Starting     vector-0.12.0.2
Building     vector-0.12.0.2
Completed    containers-0.5.11.0
Starting     multiset-0.3.4.1
Starting     regex-applicative-0.3.3
Starting     binary-0.8.6.0
Building     multiset-0.3.4.1
Building     regex-applicative-0.3.3
Building     binary-0.8.6.0
Completed    regex-applicative-0.3.3
Completed    multiset-0.3.4.1
Completed    vector-0.12.0.2
Completed    binary-0.8.6.0
Starting     text-1.2.3.1
Building     text-1.2.3.1
Completed    text-1.2.3.1
Downloading  gll-0.4.0.12
Downloading  funcons-values-0.1.0.5
Downloaded   gll-0.4.0.12
Starting     gll-0.4.0.12
Downloaded   funcons-values-0.1.0.5
Starting     funcons-values-0.1.0.5
Building     gll-0.4.0.12
Building     funcons-values-0.1.0.5
Completed    funcons-values-0.1.0.5
Completed    gll-0.4.0.12
Downloading  funcons-tools-0.2.0.9
Downloaded   funcons-tools-0.2.0.9
Starting     funcons-tools-0.2.0.9
Building     funcons-tools-0.2.0.9
Failed to install funcons-tools-0.2.0.9
Build log ( /home/builder/.cabal/logs/ghc-8.6.3/funcons-tools-0.2.0.9-Jtj0FRn2BumJIVwnabNpPf.log ):
cabal: Entering directory '/tmp/cabal-tmp-20245/funcons-tools-0.2.0.9'
Configuring funcons-tools-0.2.0.9...
Preprocessing library for funcons-tools-0.2.0.9..
Building library for funcons-tools-0.2.0.9..
[ 1 of 75] Compiling Funcons.Types    ( src/Funcons/Types.hs, dist/build/Funcons/Types.o )

src/Funcons/Types.hs:326:43: error:
    Variable not in scope: upcastCharacter :: Values -> Maybe a1
    |
326 | isChar (FValue v)               = isJust (upcastCharacter v)
    |                                           ^^^^^^^^^^^^^^^

src/Funcons/Types.hs:348:36: error:
    Variable not in scope: upcastCharacter :: t -> Maybe a0
    |
348 | isCharacter_ v           = isJust (upcastCharacter v)
    |                                    ^^^^^^^^^^^^^^^
cabal: Leaving directory '/tmp/cabal-tmp-20245/funcons-tools-0.2.0.9'
cabal: Error: some packages failed to install:
funcons-tools-0.2.0.9-Jtj0FRn2BumJIVwnabNpPf failed during the building phase.
The exception was:
ExitFailure 1