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@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