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Emerge (Gentoo) 报告软件包已安装和未安装

tag-icon • tag-icon linux gentoo emerge
Emerge (Gentoo) 报告软件包已安装和未安装

我正在尝试将 Gentoo 安装从 2018 年底升级到当前版本（2020 年 3 月）。我正在按照给出的指示进行操作这里。

我有一个主机安装，其中包含最新（2020 年 3 月）的 Gentoo 系统，并从那里我将旧安装安装在<old-inst>.我正在尝试使用以下命令进行升级：

emerge --ask --verbose --verbose-conflicts --update --deep --newuse --root=<old-inst> --config-root=<old-inst> @world --backtrack=20000

这在已安装的软件包和更新将安装的软件包之间产生了一些冲突。我通过删除旧包并尝试使用上面的命令再次更新来解决这些问题。我的计划是在更新成功运行后再次安装已删除的软件包。

这个策略对很多冲突都有效，但现在我遇到了一个无法解决的冲突。以下是来自的信息emerge --update ...：

!!! Multiple package instances within a single package slot have been pulled
!!! into the dependency graph, resulting in a slot conflict:

dev-python/cffi:0

    (dev-python/cffi-1.11.4:0/1.11.4::gentoo, installed) USE="-doc -test" PYTHON_TARGETS="python2_7 python3_6" pulled in by
        >=dev-python/cffi-1.8:0/1.11.4=[python_targets_python2_7(-),-python_single_target_python2_7(-),python_targets_python3_6(-),-python_single_target_python3_6(-),-python_single_target_python3_7(-),-python_single_target_python3_8(-)] required by (dev-python/cryptography-2.8-r1:0/0::gentoo, installed) USE="-idna -libressl -test" PYTHON_TARGETS="python2_7 python3_6 (-pypy3) (-python3_7) (-python3_8)"
                     ^^^^^^^^^^
    >=dev-python/cffi-1.1:0/1.11.4=[python_targets_python2_7(-),-python_single_target_python2_7(-),python_targets_python3_6(-),-python_single_target_python3_6(-),-python_single_target_python3_7(-)] required by (dev-python/bcrypt-3.1.6:0/0::gentoo, installed) USE="-test" PYTHON_TARGETS="python2_7 python3_6 (-python3_7)"
                     ^^^^^^^^^^
    dev-python/cffi:0/1.11.4=[python_targets_python3_6(-),-python_single_target_python3_6(-),-python_single_target_python3_7(-)] required by (dev-python/pyzmq-16.0.2:0/0::gentoo, installed) USE="(-doc) -test" PYTHON_TARGETS="python3_6 (-python3_7)"
               ^^^^^^^^^^

    (dev-python/cffi-1.13.2:0/1.13.2::gentoo, ebuild scheduled for merge) USE="-doc -test" PYTHON_TARGETS="python2_7 python3_6 (-python3_7) (-python3_8)" pulled in by >=dev-python/cffi-1.1:0/1.13.2=[python_targets_python2_7(-),-python_single_target_python2_7(-),python_targets_python3_6(-),-python_single_target_python3_6(-),-python_single_target_python3_7(-)] required by (dev-python/bcrypt-3.1.6:0/0::gentoo, installed in '/systemrescuecd/customcd/files/') USE="-test" PYTHON_TARGETS="python2_7 python3_6 (-python3_7)"
                     ^^^^^^^^^^
        dev-python/cffi:0/1.13.2=[python_targets_python2_7(-),python_targets_python3_6(-),-python_single_target_python2_7(-),-python_single_target_python3_6(-),-python_single_target_python3_7(-)] required by (dev-python/pyzmq-16.0.2:0/0::gentoo, installed in '/systemrescuecd/customcd/files/') USE="(-doc) -test" PYTHON_TARGETS="python2_7 python3_6 (-python3_7)"

如果我正确解释此信息，则至少dev-python/cffi会安装两个不同版本的软件包：例如， version1.13.2是由 package 拉取的dev-python/bcrypt，并且 version1.11.4已安装。所以我的计划是dev-python/cffi先删除包，然后再试emerge --update ...一次。所以我做了

emerge --ask --root=<old-inst> --config-root=<old-inst> -C dev-python/cffi

但emerge报告说该软件包没有安装，这让我很困惑。如果我随后尝试，emerge --update ...我会再次收到已安装该软件包的一个版本的信息。那么，该软件包是否已安装？以及如何解决这个冲突呢？或者万一包信息损坏了，有办法修复吗？

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