更新软件包列表后，出现了可升级软件包的列表：
Listing... Done
libpython3.9-dev/focal 3.9.6-1+focal1 amd64 [upgradable from: 3.9.5-3~21.04]
libpython3.9-minimal/focal 3.9.6-1+focal1 amd64 [upgradable from: 3.9.5-3~21.04]
libpython3.9-stdlib/focal 3.9.6-1+focal1 amd64 [upgradable from: 3.9.5-3~21.04]
libpython3.9/focal 3.9.6-1+focal1 amd64 [upgradable from: 3.9.5-3~21.04]
python3.9-dev/focal 3.9.6-1+focal1 amd64 [upgradable from: 3.9.5-3~21.04]
python3.9-minimal/focal 3.9.6-1+focal1 amd64 [upgradable from: 3.9.5-3~21.04]
python3.9/focal 3.9.6-1+focal1 amd64 [upgradable from: 3.9.5-3~21.04]
尝试upgrade产生以下输出：
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
libpython3.9-minimal python3.9-minimal
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
现在，当我尝试安装时python3.9-minimal，它说它依赖于新安装的libpython3.9-minimal。但是，当我尝试安装时libpython3.9-minimal，出于某种原因，我被建议卸载 231 个软件包（可能是因为这 231 个软件包需要当前libpython3.9-minimal软件包）。还有其他方法可以解决这个问题吗？
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following packages were automatically installed and are no longer required:
apg apport-symptoms aptdaemon-data avahi-utils cups-pk-helper dc dctrl-tools dh-translations diffstat distro-info distro-info-data docbook-xml genisoimage
gir1.2-accountsservice-1.0 gir1.2-appindicator3-0.1 gir1.2-atspi-2.0 gir1.2-dbusmenu-glib-0.4 gir1.2-dee-1.0 gir1.2-gck-1 gir1.2-gcr-3 gir1.2-gdm-1.0
gir1.2-geoclue-2.0 gir1.2-gnomebluetooth-1.0 gir1.2-goa-1.0 gir1.2-graphene-1.0 gir1.2-gst-plugins-base-1.0 gir1.2-gstreamer-1.0 gir1.2-gtksource-4
gir1.2-gudev-1.0 gir1.2-gweather-3.0 gir1.2-handy-0.0 gir1.2-ibus-1.0 gir1.2-javascriptcoregtk-4.0 gir1.2-json-1.0 gir1.2-keybinder-3.0 gir1.2-mutter-7
gir1.2-nm-1.0 gir1.2-nma-1.0 gir1.2-notify-0.7 gir1.2-packagekitglib-1.0 gir1.2-polkit-1.0 gir1.2-rsvg-2.0 gir1.2-secret-1 gir1.2-snapd-1 gir1.2-soup-2.4
gir1.2-totemplparser-1.0 gir1.2-udisks-2.0 gir1.2-unity-7.0 gir1.2-upowerglib-1.0 gir1.2-vte-2.91 gir1.2-webkit2-4.0 gir1.2-wnck-3.0 gkbd-capplet
gnome-control-center-faces gnome-session-bin gnome-session-common gnome-shell-common gnome-startup-applications gnome-terminal-data gnome-todo-common
grilo-plugins-0.3-base gstreamer1.0-pipewire ibus-data javascript-common jq libaliased-perl libamtk-5-0 libamtk-5-common libapt-pkg-perl libarray-intspan-perl
libb-hooks-endofscope-perl libb-hooks-op-check-perl libbabeltrace1 libblkid-dev libboost-regex1.74.0 libc6-dbg libcairo-script-interpreter2 libcapture-tiny-perl
libclang-cpp12 libclass-data-inheritable-perl libclass-method-modifiers-perl libclass-xsaccessor-perl libcolord-gtk1 libcommon-sense-perl libconfig-tiny-perl
libconst-fast-perl libcontextual-return-perl libcpanel-json-xs-perl libdata-dpath-perl libdata-messagepack-perl libdata-optlist-perl libdata-validate-domain-perl
libdatrie-dev libdbus-1-dev libdbus-glib-1-dev-bin libdebuginfod-common libdebuginfod1 libdevel-callchecker-perl libdevel-size-perl libdevel-stacktrace-perl
libdistro-info-perl libdmapsharing-3.0-2 libdynaloader-functions-perl libegl-dev libegl1-mesa-dev libemail-address-xs-perl libepoxy-dev libexception-class-perl
libexporter-tiny-perl libfdk-aac2 libfile-chdir-perl libfile-dirlist-perl libfile-find-rule-perl libfile-homedir-perl libfile-touch-perl libfile-which-perl
libfont-ttf-perl libfribidi-dev libgetopt-long-descriptive-perl libgit-wrapper-perl libgitlab-api-v4-perl libgles-dev libgles1 libglvnd-dev libgnome-todo
libgnomekbd-common libgnomekbd8 libgom-1.0-0 libgpod-common libgpod4 libgraphite2-dev libgrilo-0.3-0 libgsound0 libgssdp-1.2-0 libgupnp-1.2-0 libgupnp-av-1.0-2
libgupnp-dlna-2.0-3 libharfbuzz-gobject0 libhash-fieldhash-perl libhpmud0 libhtml-html5-entities-perl libhttp-tiny-multipart-perl libimagequant0
libimport-into-perl libio-prompter-perl libio-pty-perl libio-string-perl libipc-run-perl libipc-run3-perl libipt2 libiterator-perl libiterator-util-perl libjq1
libjs-jquery libjs-sphinxdoc libjs-underscore libjson-maybexs-perl libjson-perl libjson-xs-perl libkeybinder-3.0-0 libldb2 liblist-compare-perl
liblist-moreutils-perl liblist-moreutils-xs-perl liblist-someutils-perl liblist-someutils-xs-perl liblist-utilsby-perl liblog-any-adapter-screen-perl
liblog-any-perl libluajit-5.1-2 libluajit-5.1-common libmarkdown2 libmbedcrypto3 libmbedtls12 libmbedx509-0 libmediaart-2.0-0 libmodule-implementation-perl
libmodule-runtime-perl libmoo-perl libmoox-aliases-perl libmoox-struct-perl libmount-dev libmouse-perl libmpdec3 libmtdev-dev libmutter-7-0
libnamespace-autoclean-perl libnamespace-clean-perl libnet-domain-tld-perl libnetplan0 libnumber-compare-perl libnumber-range-perl libnvidia-cfg1-465
libnvidia-common-465 libnvidia-decode-465 libnvidia-encode-465 libnvidia-extra-465 libnvidia-fbc1-465 libnvidia-gl-465 libnvidia-ifr1-465 libobject-id-perl
libobrender32v5 libobt2v5 libonig5 libopengl-dev libopengl0 libpackage-stash-perl libpackage-stash-xs-perl libparams-classify-perl libparams-util-perl
libparams-validate-perl libpath-iterator-rule-perl libpath-tiny-perl libpcre16-3 libpcre2-dev libpcre2-posix2 libpcre3-dev libpcre32-3 libpcrecpp0v5 libpeas-common
libperlio-gzip-perl libpixman-1-dev libpod-constants-perl libpod-parser-perl libproc-processtable-perl libqt5xml5 libre-engine-re2-perl libre2-9 libreadonly-perl
libref-util-perl libref-util-xs-perl libregexp-pattern-license-perl libregexp-pattern-perl librole-tiny-perl librsync2 librygel-core-2.6-2 librygel-db-2.6-2
librygel-renderer-2.6-2 librygel-server-2.6-2 libsane-hpaio libselinux1-dev libsepol1-dev libsereal-decoder-perl libsereal-encoder-perl libsgutils2-2
libsort-key-perl libsort-versions-perl libsource-highlight-common libsource-highlight4v5 libstartup-notification0 libstrictures-perl libstring-copyright-perl
libstring-escape-perl libstring-shellquote-perl libsub-exporter-perl libsub-exporter-progressive-perl libsub-identify-perl libsub-install-perl libsub-quote-perl
libtalloc2 libtepl-5-0 libterm-readkey-perl libtevent0 libtext-glob-perl libtext-levenshteinxs-perl libtext-markdown-discount-perl libtext-xslate-perl libthai-dev
libtime-duration-perl libtime-moment-perl libtorrent-rasterbar10 libtype-tiny-perl libtype-tiny-xs-perl libtypes-serialiser-perl libunicode-utf8-perl
libvariable-magic-perl libvncserver1 libwant-perl libwbclient0 libwhoopsie-preferences0 libwnck-3-0 libwnck-3-common libxatracker2 libxcb-render0-dev libxcb-res0
libxcb-shm0-dev libxcomposite-dev libxcursor-dev libxdamage-dev libxinerama-dev libxklavier16 libxnvctrl0 libxrandr-dev libxres1 libxvmc1 libyaml-libyaml-perl
libyelp0 libz3-4 libz3-dev licensecheck lintian media-player-info mobile-broadband-provider-info mscompress mutter-common network-manager-gnome
nvidia-compute-utils-465 nvidia-kernel-common-465 nvidia-kernel-source-465 nvidia-utils-465 obconf obsession pango1.0-tools patchutils plymouth-label
policykit-1-gnome power-profiles-daemon printer-driver-hpcups python-apt-common python-pip-whl python3-minimal python3.9-minimal rhythmbox-data rygel
session-migration sgml-base sgml-data switcheroo-control t1utils totem-common vim-runtime wayland-protocols whoopsie-preferences x11-apps x11-session-utils
x11proto-randr-dev x11proto-xinerama-dev xbitmaps xbrlapi xfonts-scalable xinit xinput xml-core xserver-xorg-core xserver-xorg-input-all
xserver-xorg-input-libinput xserver-xorg-input-wacom xserver-xorg-legacy xserver-xorg-video-all xserver-xorg-video-amdgpu xserver-xorg-video-ati
xserver-xorg-video-fbdev xserver-xorg-video-intel xserver-xorg-video-nouveau xserver-xorg-video-nvidia-465 xserver-xorg-video-qxl xserver-xorg-video-radeon
xserver-xorg-video-vesa xserver-xorg-video-vmware xwayland yelp-xsl
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
policykit-1-gnome python3.9-minimal
Recommended packages:
libpython3.9-stdlib python3.9
The following packages will be REMOVED:
apport apport-gtk aptdaemon apturl apturl-common cdbs chrome-gnome-shell command-not-found deja-dup devscripts dkms dput duplicity eog firefox
foomatic-db-compressed-ppds gdb gdm3 gedit gedit-common gir1.2-peas-1.0 gir1.2-rb-3.0 gir1.2-totem-1.0 gnome-control-center gnome-getting-started-docs gnome-menus
gnome-online-accounts gnome-remote-desktop gnome-shell gnome-shell-extension-appindicator gnome-shell-extension-desktop-icons-ng gnome-shell-extension-prefs
gnome-shell-extension-ubuntu-dock gnome-terminal gnome-todo gnome-tweaks gnome-user-docs gvfs-backends hplip hplip-data ibus ibus-table kazam
language-selector-common language-selector-gnome libappindicator3-dev libatk-bridge2.0-dev libatk1.0-dev libatspi2.0-dev libcairo2-dev libdbus-glib-1-dev
libdbusmenu-glib-dev libgdk-pixbuf-2.0-dev libglib2.0-dev libglib2.0-dev-bin libgtk-3-dev libgudev-1.0-dev libharfbuzz-dev libinput-dev libpango1.0-dev
libpeas-1.0-0 libpulse-dev libpython3-dev libpython3-stdlib libpython3.9 libpython3.9-dev libpython3.9-stdlib librhythmbox-core10 libsmbclient libspeechd-dev
libtotem0 libwacom-dev llvm-12-dev llvm-12-tools lsb-release nautilus-extension-gnome-terminal nautilus-share netplan.io networkd-dispatcher nvidia-dkms-465
nvidia-driver-465 nvidia-prime nvidia-settings obs-studio openbox openprinting-ppds orca plymouth-theme-spinner plymouth-theme-ubuntu-text printer-driver-foo2zjs
printer-driver-foo2zjs-common printer-driver-m2300w printer-driver-postscript-hp printer-driver-ptouch printer-driver-pxljr printer-driver-sag-gdi python3
python3-apport python3-apt python3-aptdaemon python3-aptdaemon.gtk3widgets python3-bcrypt python3-blinker python3-brlapi python3-cairo python3-certifi
python3-cffi-backend python3-chardet python3-click python3-colorama python3-commandnotfound python3-cryptography python3-cups python3-cupshelpers python3-dateutil
python3-dbus python3-debconf python3-debian python3-defer python3-dev python3-distro python3-distro-info python3-distupgrade python3-distutils python3-fasteners
python3-future python3-gdbm python3-gi python3-gi-cairo python3-gpg python3-graphviz python3-httplib2 python3-ibus-1.0 python3-idna python3-jeepney python3-jwt
python3-keyring python3-launchpadlib python3-lazr.restfulclient python3-lazr.uri python3-ldb python3-lib2to3 python3-lockfile python3-louis python3-macaroonbakery
python3-magic python3-mako python3-markupsafe python3-monotonic python3-nacl python3-netifaces python3-notify2 python3-oauthlib python3-olefile python3-paramiko
python3-pexpect python3-pil python3-pip python3-pipdeptree python3-pkg-resources python3-problem-report python3-protobuf python3-ptyprocess python3-pyatspi
python3-pygments python3-pymacaroons python3-renderpm python3-reportlab python3-reportlab-accel python3-requests python3-rfc3339 python3-scour
python3-secretstorage python3-setuptools python3-simplejson python3-six python3-software-properties python3-speechd python3-systemd python3-talloc python3-tz
python3-unidiff python3-uno python3-update-manager python3-urllib3 python3-wadllib python3-wheel python3-xdg python3-xkit python3-yaml python3.9 python3.9-dev
qbittorrent rhythmbox rhythmbox-plugin-alternative-toolbar rhythmbox-plugins samba-libs scour screen-resolution-extra software-properties-common
software-properties-gtk steam-launcher system-config-printer system-config-printer-common system-config-printer-udev totem totem-plugins ubuntu-advantage-tools
ubuntu-desktop ubuntu-desktop-minimal ubuntu-docs ubuntu-drivers-common ubuntu-minimal ubuntu-release-upgrader-core ubuntu-release-upgrader-gtk ubuntu-session
ubuntu-standard ufw unattended-upgrades update-manager update-manager-core update-notifier update-notifier-common usb-creator-common usb-creator-gtk
v4l2loopback-dkms vim vlc-plugin-samba xorg xserver-xorg yelp
The following NEW packages will be installed:
policykit-1-gnome
The following packages will be upgraded:
libpython3.9-minimal python3.9-minimal
2 upgraded, 1 newly installed, 231 to remove and 0 not upgraded.
Need to get 2.705 kB of archives.
After this operation, 965 MB disk space will be freed.
Do you want to continue? [Y/n]
答案1
问题是我有 deadsnakes PPA，它添加了 python3.9 包的额外版本，这些版本与需要库存 python3.9 包的其他包不兼容。