Running test with the stage-1 compiler

[Ben Gamari]

Simon Peyton Jones via ghc-devs <ghc-devs at haskell.org> writes:

> Apparently 'sh validate' now uses Hadrian.
> This has broken one of my workflows:
>
>   *   build the stage1 compiler
>   *   cd testsuite/tests
>   *   make stage=1
>
> That is, run the testsuite with the stage-1 compile.  (This often produces a small test case for a compiler crash, much easier than debugging GHC compiling itself.)
> How do I do this?

I suspect (but have not tested) that you can accomplish this with

    hadrian/build.cabal.sh --flavor=validate --build-root=_buildvalidate  --test-compiler=_buildvalidate/stage0/bin/ghc

Although I'll admit  this is far from convenient. If you weren't using
the `validate` script this would just be

    hadrian/build.cabal.sh --test-compiler=_build/stage0/bin/ghc

Cheers,

- Ben
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