In-tree invocation of GHC built with Hadrian

[Alp Mestanogullari]

I can reproduce this problem. This doesn't come up when building stage2 
with that executable (stage1) because the commands that Hadrian emits 
all do something along the lines of `-no-user-package-db -package-db 
_build/stage0/lib/package.conf.d`, which masks the problem. I'm looking 
into this, I will open a ticket soon with the information that I can gather.

On 04/04/2019 13:21, Simon Peyton Jones via ghc-devs wrote:
>
> How can I run the inplace binary built by Hadrian.  I tried this
>
> ~/code/HEAD/_build/stage0/bin/ghc -c Foo.hs
>
> but I got this
>
> ~/code/HEAD/_build/stage0/bin/ghc -c Foo.hs
>
> Foo.hs:1:8: error:
>
>     Bad interface file: 
> /opt/ghc/8.6.4/lib/ghc-8.6.4/base-4.12.0.0/Prelude.hi
>
>         mismatched interface file versions (wanted "80920190403", got 
> "8064")
>
>   |
>
> 1 | module Foo where
>
>   |        ^^^
>
> simonpj at MSRC-3645512:~/tmp$
>
> Somehow the inplace binary built by Hadrian is looking for library 
> files in completely the wrong place.
>
> What should I do?
>
> Simon
>
>
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-- 
Alp Mestanogullari, Haskell Consultant
Well-Typed LLP, https://www.well-typed.com/

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