Missing Pre-processor Command Error Message

Summary

I was using hspec-discover and had forgotten to add build-tools: hspec-discover in my cabal file. When I tried running the tests i received the following unhelpful error message

$ cabal test -O0                
Resolving dependencies...
Build profile: -w ghc-9.2.7 -O0
In order, the following will be built (use -v for more details):
 - biparsing-core-0.0.0.1 (lib) (configuration changed)
 - biparsing-core-0.0.0.1 (test:spec) (configuration changed)
Configuring library for biparsing-core-0.0.0.1..
Preprocessing library for biparsing-core-0.0.0.1..
Building library for biparsing-core-0.0.0.1..
Configuring test suite 'spec' for biparsing-core-0.0.0.1..
Preprocessing test suite 'spec' for biparsing-core-0.0.0.1..
Building test suite 'spec' for biparsing-core-0.0.0.1..

tests/Spec.hs:1:1: error:
    hspec-discover: builderMainLoop: exec: invalid argument (Bad file descriptor)
  |
1 | {-# OPTIONS_GHC -F -pgmF hspec-discover #-}
  | ^

this error seems to indicate that there is some bad file descriptor in the Spec.hs file and gives a line number where to look.

The actual problem is that the command hspec-discover cannot be found in PATH. I would have expected an error more like

The command hspec-discover could not be found for pre-processing tests/Spec.hs

Related issue in hspec https://github.com/hspec/hspec/issues/879

Steps to reproduce

echo '{-# OPTIONS_GHC -F -pgmF not-a-real-command #-}' > /tmp/pre-processor-error.hs
ghc /tmp/pre-processor-error.hs

Expected behavior

The following compilation error should be output

Loaded package environment from /home/wjr/.ghc/x86_64-openbsd-9.2.7/environments/default

/tmp/pre-processor-error.hs:1:1: error:
    not-a-real-command: builderMainLoop: exec: invalid argument (Bad file descriptor)
  |
1 | {-# OPTIONS_GHC -F -pgmF not-a-real-command #-}
  | ^

Environment

• GHC version used: 9.2.7

Optional:

• Operating System: OpenBSD 7.4
• System Architecture: x86_64