[Haskell-cafe] external git dependency source in .cabal

Hello, I'm trying to reference an external source of a package within a sandbox, using cabal 2.0.0.1: source-repository head type: git location: <git URL of pack1> executable myExe build-depends: base==4.10.1.0, pack1 -any But "cabal -v install --only-dependencies" fails: cabal: Encountered missing dependencies: pack1 -any Any hint ? -- Fabien