Hadrian failed to build stage1 ghc-prim

[sighingnow]

When building ghc using hadrain with the following command

stack exec hadrian -- \
    --lint                         \
    --directory "$absoluteRoot/.." \
    -j8                            \
    --flavour=devel2               \
    "$@"

I got the error:

Error when running Shake build system:
* _build/stage1/libraries/ghc-prim/libHSghc-prim-0.5.2.0_p.a
* OracleQ (KeyValue ("_build/stage1/libraries/ghc-prim/package-data.mk","MODULES"))
* _build/stage1/libraries/ghc-prim/package-data.mk
* _build/stage1/libraries/ghc-prim/package-data.mk _build/stage1/libraries/ghc-prim/setup-config
* libraries/ghc-prim/configure
Error, file does not exist and no rule available:
  libraries/ghc-prim/configure

Seems due to the change of ghc-prim in https://phabricator.haskell.org/D4378

[angerman]

Which GHC are you trying to build? HEAD?

[sighingnow]

Yes, I'm trying to build the ghc HEAD.

• GHC version: commit f57c3059d7c8b8e00bd3a9f9153c3520f6db14d4 (testsuite: Bump allocations for T9630)
• Hadrian version: commit da397291a9052387862c27c87ec29b6fce2c7d77 (Make shell.nix less broken)

[angerman]

Strange. libraries/ghc-prim/configure should exists. It does for me.

[sighingnow]

I finally manage to make it work after deleting the _build, inplace and hadrian/cfg/system.config manually (and restart the shell).

Maybe something went wrong with my local msys2 environment. Many thanks for your attention to this! @angerman