cabal.out

# cabal v2-build
Resolving dependencies...
Build profile: -w ghc-<GHCVER> -O1
In order, the following will be built:
 - p-1.0 (lib) (first run)
 - q-1.0 (exe:qexe) (first run)
Configuring library for p-1.0..
Preprocessing library for p-1.0..
Building library for p-1.0..
Configuring executable 'qexe' for q-1.0..
Preprocessing executable 'qexe' for q-1.0..
Building executable 'qexe' for q-1.0..
# cabal v2-build
Build profile: -w ghc-<GHCVER> -O1
In order, the following will be built:
 - p-1.0 (lib) (file P.hs changed)
Preprocessing library for p-1.0..
Building library for p-1.0..
# cabal v2-build
Build profile: -w ghc-<GHCVER> -O1
In order, the following will be built:
 - q-1.0 (exe:qexe) (file <ROOT>/cabal.dist/work/dist/build/<ARCH>/ghc-<GHCVER>/p-1.0/cache/build changed)
Preprocessing executable 'qexe' for q-1.0..
Building executable 'qexe' for q-1.0..
# q qexe
BBB