kernel-source/_constraints

<constraints>
  <hardware>
    <disk>
      <size unit="G">7</size>
    </disk>
  </hardware>

  <overwrite>
    <conditions>
      <arch>i586</arch>      <!-- applies only for either i586 or x86_64 packages -->
      <arch>x86_64</arch>
<package>kernel-debug</package>
<package>kernel-default</package>
<package>kernel-desktop</package>
<package>kernel-ec2</package>
<package>kernel-exynos</package>
<package>kernel-lpae</package>
<package>kernel-pae</package>
<package>kernel-vanilla</package>
<package>kernel-xen</package>
    </conditions>
    <hardware>
      <processors>8</processors>
      <disk>
        <size unit="G">14</size>
      </disk>
    </hardware>
  </overwrite>

  <overwrite>
    <conditions>
      <arch>i586</arch>
      <arch>x86_64</arch>
      <package>kernel-obs-qa</package>
    </conditions>
    <sandbox>kvm</sandbox>
  </overwrite>

  <overwrite>
    <conditions>
      <arch>i586</arch>
      <arch>x86_64</arch>
      <package>kernel-obs-qa-xen</package>
    </conditions>
    <sandbox>xen</sandbox>
  </overwrite>
</constraints>