[Haskell-cafe] Stack transitive dependencies

Hello, I have a package depending on another: Foo/stack.yaml: flags: {} packages: - '.' - location: ../Bar extra-dep: true extra-deps: - Bar-0.7.6 resolver: lts-2.19 When I compile (stack build), I obtain: -- While attempting to add dependency, Could not find package DebugTraceHelpers in known packages -- Failure when adding dependencies: DebugTraceHelpers: needed (==0.12.*), but not present in build plan, latest is 0.12 needed for package: Bar-0.7.6 I find it strange that it asks for DebugTraceHelpers because it's not a direct dependency of my package, but a dependency of a dependency. It is correctly mentioned in Bar/stack.yml: flags: {} packages: - '.' extra-deps: - DebugTraceHelpers-0.12 resolver: lts-2.19