Rom*_*nko 5 fedora dependencies package-management dnf
例如，如果我启动希腊语言元包的安装，系统会提示我安装其依赖项和弱依赖项。
$ LC_ALL=C sudo dnf install langpacks-el
[sudo] password for roman:
Last metadata expiration check: 4:03:14 ago on Sat Sep 25 13:17:49 2021.
Dependencies resolved.
===============================================================================
Package Arch Version Repository Size
===============================================================================
Installing:
langpacks-el noarch 3.0-14.fc34 fedora 10 k
Installing dependencies:
autocorr-el noarch 1:7.1.6.2-1.fc34 updates 81 k
langpacks-core-el noarch 3.0-14.fc34 fedora 10 k
langpacks-core-font-el noarch 3.0-14.fc34 fedora 10 k
Installing weak dependencies:
glibc-langpack-el x86_64 2.33-20.fc34 updates 512 k
hunspell-el noarch 1:0.9-7.fc34 fedora 1.7 M
hyphen-el noarch 0.20051018-23.fc34 fedora 9.3 k
libreoffice-help-el x86_64 1:7.1.6.2-1.fc34 updates 3.6 M
libreoffice-langpack-el x86_64 1:7.1.6.2-1.fc34 updates 854 k
mythes-el noarch 0.20070412-25.fc34 fedora 161 k
Transaction Summary
===============================================================================
Install 10 Packages
Total download size: 6.9 M
Installed size: 56 M
Is this ok [y/N]:
但是，如果我尝试手动列出依赖项，我看不到弱依赖项。我如何查找它们？
这是我尝试过的。
$ LC_ALL=C dnf repoquery --depends langpacks-el
Last metadata expiration check: 3:15:20 ago on Sat Sep 25 14:07:02 2021.
langpacks-core-el
$ LC_ALL=C dnf repoquery --depends langpacks-core-el
Last metadata expiration check: 3:15:42 ago on Sat Sep 25 14:07:02 2021.
langpacks-core-font-el
$ LC_ALL=C dnf repoquery --depends langpacks-core-font-el
Last metadata expiration check: 3:16:08 ago on Sat Sep 25 14:07:02 2021.
dejavu-sans-fonts
根据手册页：
dnf [选项] repoquery [<选择选项>] [<查询选项>] [<包文件规范>]
在可用的 DNF 存储库中搜索选定的软件包并显示所需的有关它们的信息。它相当于远程存储库的rpm -q 。
- 依靠
显示包所依赖、增强、推荐、建议或补充的功能。
dnf repoquery --depends仅打印前向依赖项（langpacks-el包中列出的依赖项为Requires/Recommends/Suggests ），因此它在这里按预期工作，因为“额外”包是通过后向/反向依赖项引入的。hunspell-el例如，该软件包具有反向弱依赖关系（此依赖关系在hunspell-el补充中列出），这意味着当您同时安装和安装(hunspell and langpacks-el)时，它将被安装。对于语言包，这允许仅安装已安装的包的语言包 -如果您还没有 KDE，您将无法获得 KDE 本地化（也是补充）。hunspelllangpack-elkde-l10n-ellangpacks-el
您可以打印反向弱依赖关系--whatsupplements
# dnf repoquery --whatsupplements langpacks-core-el
glibc-langpack-el-0:2.33-20.fc34.x86_64
glibc-langpack-el-0:2.33-5.fc34.x86_64
# dnf repoquery --whatsupplements langpacks-el
gimp-help-el-0:2.10.0-6.fc34.noarch
guayadeque-langpack-el-0:0.4.7-0.27.20210315git37840c1.fc34.noarch
guayadeque-langpack-el-0:0.4.7-0.30.20210415git79ec09d.fc34.noarch
hunspell-el-1:0.9-7.fc34.noarch
hyphen-el-0:0.20051018-23.fc34.noarch
kde-l10n-el-0:17.08.3-10.fc34.noarch
libreoffice-langpack-el-1:7.1.2.2-1.fc34.x86_64
libreoffice-langpack-el-1:7.1.6.2-1.fc34.x86_64
mythes-el-0:0.20070412-25.fc34.noarch
shotcut-langpack-el-0:21.03.21-2.fc34.noarch
tesseract-langpack-ell-0:4.1.0-1.fc34.noarch
我认为不可能用一个命令同时打印前向和后向依赖关系。