Stack invokes the wrong Hadrian build script when building GHC from source

[fwcd]

General summary

Building a recent version of GHC from source by specifying compiler: ghc-git-COMMIT-FLAVOUR in a stack.yaml (as described here) fails with the following error:

Building GHC from source with `quick` flavour. It can take a long time (more than one hour)...
Did not find executable at specified path: /tmp/with-repo468829/cloned/hadrian/build.stack.sh

Steps to reproduce

For example:

1. Create stack.yaml with

compiler: ghc-git-7bc7eea3897dcb8a87fdb0921f451b9bc77309f6-quickest

(This is the newest GHC commit at the time of writing)

2. Run stack build

Expected

The script hadrian/build-stack should be invoked.

Actual

The script hadrian/build.stack.sh was invoked (apparently the script has been renamed).

Stack version

$ stack --version
Version 2.5.1, Git revision d6ab861544918185236cf826cb2028abb266d6d5 x86_64 hpack-0.33.0

Method of installation

Official binary

[hsyl20]

Thanks for fixing this! A related issue to fix:

In Stack.Setup, there is still:

           hadrianArgs = fmap T.unpack
               [ "-c"                    -- run ./boot and ./configure
               , "-j" <> tshow threads   -- parallel build
               , "--flavour=" <> flavour -- selected flavour
               , "binary-dist"
               ]

but -c is broken again (cf https://gitlab.haskell.org/ghc/ghc/-/issues/19804) and probably won't be fixed... Instead of using it, we should call the following commands before invoking hadrian:

stack --stack-yaml hadrian/stack.yaml exec -- ./boot
stack --stack-yaml hadrian/stack.yaml exec -- ./configure

@fwcd If you had the bandwidth to offer a patch for this, it would be great :)