# cabal new-run Resolving dependencies... Build profile: -w ghc- -O1 In order, the following will be built: - Single-1.0 (exe:foo) (first run) Configuring executable 'foo' for Single-1.0.. Preprocessing executable 'foo' for Single-1.0.. Building executable 'foo' for Single-1.0.. # cabal new-run Up to date # cabal new-run Up to date # cabal new-run Up to date # cabal new-run Up to date # cabal new-run cabal: Cannot run the package bar, it is not in this project (either directly or indirectly). If you want to add it to the project then edit the cabal.project file.