If I install a package using cabal install pkg then cabal will install all packages that pkg depends on. If there is a conflict with already installed packages then cabal shows which packages have to be installed freshly, which ones are updated and which installed ones will be broken.
Is there a way to get this list unconditionally instead of running the install procedure?
cabal install <pkg> --dry-run will print the packages that will be installed without actually performing any of the installation. It will not show this information though if the package is installed or similar.