cabal.out

# cabal v2-build
Resolving dependencies...
Build profile: -w ghc-<GHCVER> -O1
In order, the following will be built:
 - foo-0.1.0.0 (exe:my-cpp) (first run)
 - foo-0.1.0.0 (lib) (first run)
 - foo-0.1.0.0 (exe:hello-world) (first run)
Configuring executable 'my-cpp' for foo-0.1.0.0..
Preprocessing executable 'my-cpp' for foo-0.1.0.0..
Building executable 'my-cpp' for foo-0.1.0.0..
Configuring library for foo-0.1.0.0..
Preprocessing library for foo-0.1.0.0..
Building library for foo-0.1.0.0..
Configuring executable 'hello-world' for foo-0.1.0.0..
Warning: The package has an extraneous version range for a dependency on an internal library: foo -any && ==0.1.0.0. This version range includes the current package but isn't needed as the current package's library will always be used.
Preprocessing executable 'hello-world' for foo-0.1.0.0..
Building executable 'hello-world' for foo-0.1.0.0..