Comment 1 for bug 1737561

Can you share some details on what you're building? A YAML snippet would be great.

From your wording this sounds like the expected behavior. There's a new "to" statement is underway which installs packages for a specific target architecture (https://github.com/snapcore/snapcraft/pull/1639) as well as a :target suffix to generically install the package for the target architecture (https://github.com/snapcore/snapcraft/pull/1536). My guess would be that one of those would address your use case.