Unhandled exception:
  * In program paludis -pi world:
  * When performing install action from command line:
  * When executing install task:
  * When adding PackageDepSpec 'virtual/baselayout':
  * When checking mask reasons for 'virtual/baselayout-1.13.0_alpha12::virtuals'
  * When checking mask reasons for 'sys-apps/baselayout-1.13.0_alpha12::gentoo'
  * When querying repository mask for 'sys-apps/baselayout-1.13.0_alpha12':
  * When parsing package dep spec '>=kde-misc/krusader-1.80.0_beta1.ebuild':
  * When parsing version spec '1.80.0_beta1.ebuild':
  * Name '1.80.0_beta1.ebuild' is not a valid version spec (paludis::BadVersionSpecError)