Running test with the stage-1 compiler

[Alp Mestanogullari]

For what it's worth, there's a "shortcut" to save a few keystrokes: 
--test-compiler=stage1

But this broke at some point in the past few months, as documented in 
#17528. I am however working on a patch to make this work.

On 09/12/2019 23:23, Ben Gamari wrote:
> 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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-- 
Alp Mestanogullari, Haskell Consultant
Well-Typed LLP, https://www.well-typed.com/

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