FM / ubuntu-release-upgrader

/usr/share/ubuntu-release-upgrader

Name	Size	Mode	Actions
additional_pkgs.cfg	26	0644	edit dl rm
deb2snap.json	571	0644	edit dl rm
demoted.cfg	2776	0644	edit dl rm
DistUpgrade.cfg	4567	0644	edit dl rm
mirrors.cfg	21584	0644	edit dl rm
removal_blacklist.cfg	619	0644	edit dl rm

Edit: /usr/share/ubuntu-release-upgrader/DistUpgrade.cfg (4567B)

[View]
# the views will be tried in this order, if one fails to import, the next
# is tried
View=DistUpgradeViewGtk3,DistUpgradeViewKDE,DistUpgradeViewText
#View=DistUpgradeViewNonInteractive
#Depends= apt (>= 1.0.10.2ubuntu2)
# the views below support upgrades over ssh connection
SupportSSH=DistUpgradeViewText,DistUpgradeViewNonInteractive

# Distro contains global information about the upgrade
[Distro]
# the meta-pkgs we support
MetaPkgs=ubuntu-desktop, kubuntu-desktop, xubuntu-core,
   xubuntu-desktop, ubuntustudio-desktop, mythbuntu-desktop,
   kubuntu-netbook, lubuntu-desktop, ubuntu-gnome-desktop,
   ubuntu-mate-core, ubuntu-mate-desktop,
   ubuntukylin-desktop, ubuntu-budgie-desktop
BaseMetaPkgs=ubuntu-minimal, ubuntu-standard
# minimal & standard, are handed via BaseMetaPkgs rule
# ubuntu-core is left-over task we forgot to remove
IgnoredTasks=minimal, standard, ubuntu-core
Demotions=demoted.cfg
#RemoveEssentialOk=sysvinit, sysvutils, belocs-locales-bin
RemovalBlacklistFile=removal_blacklist.cfg
# if those packages were installed, make sure to keep them installed
KeepInstalledPkgs=xserver-xorg-video-all
KeepInstalledSection=translations
RemoveObsoletes=yes
PurgeObsoletes=yes
#ForcedObsoletes=ksplash-engine-moodin, powernowd, laptop-mode-tools
# hints for for stuff that should be done right after the cache calculated
# the dist-upgrade (not to be confused with the PostUpgrade hooks in the
# quirks handling)
#PostUpgradePurge=linux-restricted-modules-common
#PostUpgradeRemove=xsettings-kde
#PostUpgradeUpgrade=brasero,edubuntu-desktop
#PostUpgradeInstall=apt
PostInstallScripts=./xorg_fix_proprietary.py
EnableApport=yes
# this supported blacklisting certain versions to ensure we do not upgrade
#  - blcr-dkms fails to build on kernel 2.6.35
#BadVersions=blcr-dkms_0.8.2-13
# ubiquity slideshow
#SlideshowUrl=http://people.canonical.com/~mvo/ubiquity-slideshow-upgrade/slides/

# information about the individual meta-pkgs
[ubuntu-desktop]
KeyDependencies=lightdm, unity, ubuntu-artwork, ubuntu-sounds
# those pkgs will be marked remove right after the distUpgrade in the cache
PostUpgradeRemove=gnome-cups-manager, powermanagement-interface, deskbar-applet, nautilus-cd-burner
ForcedObsoletes=desktop-effects, gnome-app-install, policykit-gnome, gnome-mount

[kubuntu-desktop]
KeyDependencies=plasma-desktop, kubuntu-settings-desktop
PostUpgradeRemove=powermanagement-interface, guidance-power-manager, kde-guidance-powermanager, kmix
# those packages are marked as obsolete right after the upgrade
ForcedObsoletes=ivman, gtk-qt-engine
# help the resolver a bit: LP: #1426132
PostUpgradeInstall=baloo-kf5

[kubuntu-netbook]
KeyDependencies=plasma-netbook, kubuntu-settings-netbook

[ubuntu-netbook]
KeyDependencies=gdm, ubuntu-netbook-default-settings

[xubuntu-core]
KeyDependencies=xubuntu-artwork, xubuntu-default-settings, xfwm4
PostUpgradeRemove=notification-daemon

[xubuntu-desktop]
KeyDependencies=xubuntu-artwork, xubuntu-default-settings, xfwm4
PostUpgradeRemove=notification-daemon

[ubuntustudio-desktop]
KeyDependencies=ubuntustudio-default-settings, ubuntustudio-look

[ichthux-desktop]
KeyDependencies=ichthux-artwork, ichthux-default-settings

[mythbuntu-desktop]
KeyDependencies=mythbuntu-artwork, mythbuntu-default-settings

[lubuntu-desktop]
KeyDependencies=lubuntu-artwork, lubuntu-default-settings

[ubuntu-gnome-desktop]
KeyDependencies=ubuntu-gnome-default-settings, ubuntu-gnome-wallpapers

[ubuntu-mate-core]
KeyDependencies=mate-desktop-environment-core, ubuntu-mate-default-settings, marco
PostUpgradeRemove=ibus,lightdm-gtk-greeter,lightdm-gtk-greeter-settings

[ubuntu-mate-desktop]
KeyDependencies=ubuntu-mate-core, deja-dup-caja
PostUpgradeRemove=ibus,lightdm-gtk-greeter,lightdm-gtk-greeter-settings

[ubuntukylin-desktop]
KeyDependencies=ubuntukylin-keyring, ubuntukylin-wallpapers, ubuntu-kylin-docs

[ubuntu-budgie-desktop]
KeyDependencies=budgie-desktop-environment, budgie-welcome, ubuntu-budgie-themes

[Files]
BackupExt=distUpgrade
LogDir=/var/log/dist-upgrade/

[Sources]
From=eoan
To=focal
ValidOrigin=Ubuntu
ValidMirrors = mirrors.cfg
Components=main,restricted,universe,multiverse
Pockets=security,updates,proposed,backports
;AllowThirdParty=False

;[PreRequists]
;Packages=release-upgrader-apt,release-upgrader-dpkg
;SourcesList=prerequists-sources.list
;SourcesList-ia64=prerequists-sources.ports.list
;SourcesList-hppa=prerequists-sources.ports.list

[Network]
MaxRetries=3

[NonInteractive]
ForceOverwrite=yes
RealReboot=no
DebugBrokenScripts=no
DpkgProgressLog=no
;TerminalTimeout=2400

cmd: