DHi Simon,

It seems that GHC is "helpfully" adding flags to your invocation see https://ghc.gitlab.haskell.org/ghc/doc/users_guide/packages.html#package-environments

You can see exactly what is being added by inspecting the environment file /home/simonpj/.ghc/x86_64-linux-9.5.20220628/environments/default.

You can safely delete .ghc/x86_64-linux-9.5.20220628/environments/default. Although without knowing how it got there, it may re-appear.

You can set `export GHC_ENVIRONMENT=-` or pass `-package-env -` on your command line to disable the reading of environment files.

Regards,

Douglas Wilson

On Tue, Jul 12, 2022 at 1:24 PM Simon Peyton Jones <simon.peytonjones@gmail.com> wrote:

I'm in a GHC tree, built with Hadrian, I'm getting this red problem. But compilation has got way past compiling base.

why is it looking in my .ghc/... directory? It should be looking in my build tree.

Simon

bash$ ~/code/HEAD-1/_build/ghc-stage1 -c Foo.hs
Loaded package environment from /home/simonpj/.ghc/x86_64-linux-9.5.20220628/environments/default
<command line>: cannot satisfy -package-id base-4.17.0.0
(use -v for more information)

bash$ cat ~/code/HEAD-1/_build/ghc-stage1
"/home/simonpj/code/HEAD-1/_build/stage0/bin/ghc" "-no-global-package-db" "-package-db /home/simonpj/code/HEAD-1/_build/stage1/lib/package.conf.d" "$@"

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