ghc-lib-parser-9.12.2.20250421 fails to build with ghc-9.12.2 on Windows 11

[Eason0210]

On Windows 11, I installed ghc 9.12.2 and cabal 3.14.2.0 with ghcup.

When I try to install ormolu with cabal install ormolu, will failed with the error as bellow:

> cabal install ormolu
Resolving dependencies...
Build profile: -w ghc-9.12.2 -O1
In order, the following will be built (use -v for more details):
 - Diff-1.0.2 (lib) (requires download & build)
 - alex-3.5.3.0 (exe:alex) (requires download & build)
 ... ( omitted a few lines here)
 - happy-2.1.5 (exe:happy) (requires download & build)
 - ghc-lib-parser-9.12.2.20250421 (lib) (requires download & build)
 - ormolu-0.8.0.0 (lib) (requires download & build)
 - ormolu-0.8.0.0 (exe:ormolu) (requires download & build)
Downloading  choice-0.2.4.1
Downloaded   choice-0.2.4.1
Downloaded   ormolu-0.8.0.0
 ... ( omitted a few lines here)
Installing   MemoTrie-0.6.9 (lib)
Completed    MemoTrie-0.6.9 (lib)
Installing   Diff-1.0.2 (lib)
Completed    Diff-1.0.2 (lib)
Installing   unliftio-0.2.25.1 (lib)
Completed    unliftio-0.2.25.1 (lib)
Building     ghc-lib-parser-9.12.2.20250421 (lib)

Failed to build ghc-lib-parser-9.12.2.20250421.
Build log (
C:\Users\Aqua\AppData\Local\cabal\logs\ghc-9.12.2\ghc-lib-parser-9.12.2._-78bb150ce88aba781a22a1b44514a659e5621e3c.log
):
Preprocessing library for ghc-lib-parser-9.12.2.20250421...
happy.exe: Uncaught exception ghc-internal:GHC.Internal.IO.Exception.IOException:

compiler\GHC\Parser.y: hGetContents: invalid argument (cannot decode byte sequence starting from 183)

HasCallStack backtrace:
  collectBacktraces, called at libraries\ghc-internal\src\GHC\Internal\Exception.hs:169:13 in ghc-internal:GHC.Internal.Exception
  toExceptionWithBacktrace, called at libraries\ghc-internal\src\GHC\Internal\Exception.hs:89:42 in ghc-internal:GHC.Internal.Exception
  throw, called at libraries\ghc-internal\src\GHC\Internal\IO\Handle\Text.hs:443:35 in ghc-internal:GHC.Internal.IO.Handle.Text

Error: [Cabal-7125]
Failed to build ghc-lib-parser-9.12.2.20250421 (which is required by exe:ormolu from ormolu-0.8.0.0). See the build log above for details.

But with cabal install ormolu with ghc-9.6.7 will succeed to install ormolu-0.7.7.0

I also try cabal install ghc-lib, failed with the same error:

❯ cabal install ghc-lib
Resolving dependencies...
Build profile: -w ghc-9.12.2 -O1
In order, the following will be built (use -v for more details):
 - ghc-lib-parser-9.12.2.20250421 (lib) (requires build)
 - ghc-lib-9.12.2.20250421 (lib) (requires download & build)
Warning:
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: Installation might not be completed as desired! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
The command "cabal install [TARGETS]" doesn't expose libraries.
* You might have wanted to add them as dependencies to your package. In this
case add "ghc-lib" to the build-depends field(s) of your package's .cabal
file.
* You might have wanted to add them to a GHC environment. In this case use
"cabal install --lib ghc-lib". The "--lib" flag is provisional: see
https://github.com/haskell/cabal/issues/6481 for more information.
Downloading  ghc-lib-9.12.2.20250421
Starting     ghc-lib-parser-9.12.2.20250421 (lib)
Building     ghc-lib-parser-9.12.2.20250421 (lib)
Downloaded   ghc-lib-9.12.2.20250421

Failed to build ghc-lib-parser-9.12.2.20250421.
Build log (
C:\Users\Aqua\AppData\Local\cabal\logs\ghc-9.12.2\ghc-lib-parser-9.12.2._-78bb150ce88aba781a22a1b44514a659e5621e3c.log
):
Preprocessing library for ghc-lib-parser-9.12.2.20250421...
happy.exe: Uncaught exception ghc-internal:GHC.Internal.IO.Exception.IOException:

compiler\GHC\Parser.y: hGetContents: invalid argument (cannot decode byte sequence starting from 183)

HasCallStack backtrace:
  collectBacktraces, called at libraries\ghc-internal\src\GHC\Internal\Exception.hs:169:13 in ghc-internal:GHC.Internal.Exception
  toExceptionWithBacktrace, called at libraries\ghc-internal\src\GHC\Internal\Exception.hs:89:42 in ghc-internal:GHC.Internal.Exception
  throw, called at libraries\ghc-internal\src\GHC\Internal\IO\Handle\Text.hs:443:35 in ghc-internal:GHC.Internal.IO.Handle.Text

Error: [Cabal-7125]
Failed to build ghc-lib-parser-9.12.2.20250421 (which is required by ghc-lib-9.12.2.20250421). See the build log above for details.

If you need more infomation, please let me knonw.

[itsybitesyspider]

I'm able to replicate this issue with this Dockerfile:

FROM debian:trixie

ENV DEBIAN_FRONTEND=noninteractive

RUN apt-get update && apt-get full-upgrade -y
RUN apt-get update && apt-get install -y bash-completion build-essential bzip2 curl just gpg make mesa-utils sudo tzdata wget xz-utils zip unzip libffi-dev libffi8 libffi8ubuntu1 libgmp-dev libgmp10 libncurses-dev libncurses6 libtinfo6 pkg-config

ENV BOOTSTRAP_HASKELL_GHC_VERSION=9.12.2
ENV BOOTSTRAP_HASKELL_CABAL_VERSION=3.16.0.0
ENV PATH=/root/.ghcup/bin:$PATH
RUN curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | BOOTSTRAP_HASKELL_NONINTERACTIVE=1 BOOTSTRAP_HASKELL_INSTALL_STACK=0 BOOTSTRAP_HASKELL_INSTALL_HLS=1 BOOTSTRAP_HASKELL_ADJUST_BASHRC=P sh
RUN ~/.ghcup/bin/cabal install ghc-lib

I have found no workaround.

[TristanCacqueray]

We had the same issue and here is a workaround: change-metrics/monocle@c37ab84