cabal.out

# cabal v2-build
Resolving dependencies...
Build profile: -w ghc-<GHCVER> -O1
In order, the following will be built:
 - impl-0 (lib) (first run)
 - sig-0 (lib) (first run)
 - prog-0 (lib) (first run)
 - prog-0 (lib with Sig=impl-0-inplace:Sig) (first run)
 - prog-0 (exe:prog) (first run)
Configuring library for impl-0..
Preprocessing library for impl-0..
Building library for impl-0..
Configuring library for sig-0..
Preprocessing library for sig-0..
Building library instantiated with Sig = <Sig>
for sig-0..
Configuring library for prog-0..
Preprocessing library for prog-0..
Building library instantiated with Sig = <Sig>
for prog-0..
Configuring library instantiated with Sig = impl-0-inplace:Sig
for prog-0..
Preprocessing library for prog-0..
Building library instantiated with Sig = impl-0-inplace:Sig
for prog-0..
Configuring executable 'prog' for prog-0..
Warning: The package has an extraneous version range for a dependency on an internal library: prog >=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 'prog' for prog-0..
Building executable 'prog' for prog-0..