- pkgname: a
  version: 1
  requires:
    - b=1
  provides:
    - a = 1
    - a(x86-64) = 1

- pkgname: a
  version: 2
  requires:
    - b=2
  provides:
    - a = 2
    - a(x86-64) = 2

- pkgname: b
  version: 1
  provides:
    - b = 1
    - b(x86-64) = 1

- pkgname: b
  version: 2
  provides:
    - b = 2
    - b(x86-64) = 2