"stack setup" output mentions "locally installed GHC" which is terribly confusing

[varosi]

on Windows 8, stack 1.1.2

There is no locally installed GHC:

ghc --version
'ghc' is not recognized as an internal or external command,
operable program or batch file.

stack setup --reinstall
stack will use a locally installed GHC
For more information on paths, see 'stack path' and 'stack exec env'
To use this GHC and packages outside of a project, consider using:
stack ghc, stack ghci, stack runghc, or stack exec

[mgsloan]

What about stack exec -- which ghc, stack exec -- ghc --version ?

Will re-open upon further details.

[varosi]

Running from cmd.exe (Windows Console) inside my project's folder where there is stack.yaml:

stack setup --reinstall
stack will use a locally installed GHC
For more information on paths, see 'stack path' and 'stack exec env'
To use this GHC and packages outside of a project, consider using:
stack ghc, stack ghci, stack runghc, or stack exec

stack exec -- which ghc
/c/Users/home/AppData/Local/Programs/stack/x86_64-windows/ghc-7.10.3/bin/ghc

stack exec -- ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.10.3

ghc --version
'ghc' is not recognized as an internal or external command,
operable program or batch file.

[varosi]

I couldn't not reopen it.

[sjakobi]

Is this a misunderstanding about the line "stack will use a locally installed GHC"?

It does appear as if the ghc in /c/Users/home/AppData/Local/Programs/stack/x86_64-windows/ghc-7.10.3/bin/ghc is present, right?

[mgsloan]

Hmm, yeah, it seems to think it is using a locally installed GHC, but the stack installed one is most immediately present on PATH

Does your PATH var contain that dir?

[sjakobi]

This is just bad wording: See Stack.SetupCmd and Stack.Setup.ensureCompiler.

Would something like this be clearer?

stack will use a sandboxed GHC that is separate from any local system installations

[varosi]

Yes, this is much more clear.

[varosi]

@mgsloan, nope, my PATH doesn't contain this directory.