!!! Multiple package instances within a single package slot have been pulled !!! into the dependency graph, resulting in a slot conflict: dev-python/pluggy:0 (dev-python/pluggy-0.5.2:0/0::gentoo, ebuild scheduled for merge) pulled in by

--autounmask-backtrack < y | n >Allow backtracking after autounmask has detected that configuration changes are necessary. This option is not recommended, since it can cause a large amount of time to be wasted by backtracking calculations,…

1. cardとdeviceを調べる $ aplay -l **** ハードウェアデバイス PLAYBACK のリスト **** カード 0: PCH [HDA Intel PCH], デバイス 0: Generic Analog [Generic Analog] サブデバイス: 1/1 サブデバイス #0: subdevice #0 カード 0: PCH [HDA Intel PCH], …