I have these Localizable settings under resources/language directory.

resources/language/
├── Base.lproj
│   └── Localizable.strings
└── ja.lproj
    └── Localizable.strings

I want to import them into separated target.

targets:
  LGTM:
    platform: macOS
    type: application
    sources:
      - LGTM
      - resources/language
  LGTM_iOS:
    platform: iOS
    type: application
    sources:
      - LGTM_iOS
      - resources/language

This spec ends-up with the files only added to LGTM target.

Also on Xcode, both files are displayed as same name, so maybe it's better if we could display the parent directory names for Localizable.strings.