> Would you verify that passing --ghc-options when configuring a package
> adds the options to 'ghc-options:' if present in the .cabal file?
With pleasure. I made a «dummy» program to verify that (files here [1]):
1. A dummy `Main.hs` executable which uses an external library and also generates GHC warnings.
2. A simple `test-ghc-opts.cabal` file which has a `ghc-options:` to display warnings
3. A `build.sh` script which configures the program with a `ghc-options` to remove the [rpath] of dynamic linking.
If both the warnings are displayed and the [rpath] doesn't exist, it means that both ways of giving `ghc-options` are working side by side. It is the case on my computer! But I let you verify my scripts to be sure that I'm doing the test correctly.