Cupt is a high-level package manager for Debian and Debian-derived OSes, with dpkg(1) as a back-end.
The aim of this manual is to describe the all features Cupt package manager has to manage the system, from the most basics to very advanced tuning. Please submit your proposals/patches when you see some use case is not covered.
This manual was written for the second major version of Cupt (2.x branch).
You might not want to use Cupt, because:
You might want to use Cupt to have these, to my best knowledge, unique features:
Also, one of Cupt's targets is to have zero non-wishlist bugs. You might want to try it if you encountered a bug in other package manager(s).
Out of existing APT infrastructure, Cupt uses (and shares):
The following infrastructure items are Cupt-specific:
To start working with Cupt just install it using any present package manager
(for example, apt-get install cupt
or aptitude install cupt
) and run
cupt update
afterwards.
It should be safe to co-use Cupt and any APT-based package managers.
When using commands that modify a system, you have to either execute cupt
with
root privileges or supply --simulate
(or -s
) option.
Use cupt help
to get a list of subcommands and their short descriptions.
Cupt package manager sees the Debian system as a set of installed packages and repositories of available packages.
Each binary package has zero, one or more versions, of which zero or one versions may be installed.
Any installed package may be marked as automatically installed, it means that user didn't ask for this package to be installed, but it is needed to satisfy some dependency. Packages which are not automatically installed are manually installed.
Available versions (including installed one) of the binary package have unique
version strings. Since Cupt 2.6, Cupt-specific version string suffixes (for example,
^installed
or ^dhs0
) may be applied. More details on this here.
Cupt uses three types of output to user: information, warnings and errors.
All warning messages are prepended with W:
. They mean non-critical errors,
which may be, depending on the situation, real errors or things to ignore.
All error messages are prepended with E:
. Most of errors block the executing
of the program, but not all.
Errors and warnings are written to the standard error.
All other messages are the information for the user. They are written to standard output.
cupt pkgnames --installed-only
gives you the list, one package name per line. You can also use
dpkg -l | grep "^ii"
for more detailed information.
dpkg -s
package_name
or
cupt show --installed-only
package_name
A second command is preferable, for example, when you want to know is this package automatically installed or not.
To show a default package version:
cupt show
package_name
Example: cupt show dpkg
To show all available package versions:
cupt show --all-versions
package_name
If you want to see a Debian changelog for a package, use the subcommand changelog
.
Example: cupt changelog exim4
If you want to see a Debian copyright file a for a package, use the subcommand copyright
.
Example: cupt copyright exim4
Note: Cupt can show changelogs and copyrights either for installed packages, or for packages available in official repositories in Debian or Ubuntu.
To search for a package, specify one or more regular expressions as arguments:
cupt search
keyword1 keyword2 ... keywordN
Example: you want to find a Qt-based audio player:
cupt search audio qt player
: found qmmp.
cupt search music qt player
: found also amarok.
Another example: you want to find GTK+-related Perl modules:
cupt search --names-only "gtk.*perl"
To update repository medadata, use
cupt update
It's recommended to update metadata every time before you install or upgrade packages.
Note: Cupt downloads quite a many files to update repository metadata. Some files may be downloaded in 2-3 different ways (like indexes) or are not so important (like translations for package descriptions). You may see some warnings, but if you don't see an error message like
E: there were errors while downloading release and index data
, the process overall went fine. You can also check program exit code.
When some package is changing its state, Cupt calls the action:
An example of action preview prompt:
$ cupt install kdm akregator exim4 The following packages will be installed: exim4 exim4-base exim4-config exim4-daemon-light The following packages will be upgraded: kde-window-manager kdebase-workspace-bin kdebase-workspace-data kdebase-workspace-kgreet-plugins kdm ksysguard ksysguardd libkdecorations4 libkephal4abi1 libkscreensaver5 libksgrd4 libksignalplotter4 libkwineffects1abi1 libkworkspace4 libplasma-geolocation-interface4 libplasmaclock4abi1 libplasmagenericshell4 libprocesscore4abi1 libprocessui4a libsolidcontrol4abi1 libsolidcontrolifaces4abi1 libtaskmanager4abi1 libweather-ion6 plasma-dataengines-workspace plasma-desktop plasma-widgets-workspace The following packages will be removed: libgsasl7(a) libntlm0(a) msmtp(a) msmtp-mta Action summary: 1 manually installed and 3 automatically installed packages will be installed 1 manually installed and 25 automatically installed packages will be upgraded 1 manually installed and 3 automatically installed packages will be removed Need to get 25.7MiB/83.4MiB of archives. After unpacking 3512KiB will be used. Do you want to continue? [y/N/q/a/?]
In the output above you can see: lists of packages to change the state, the summary of planned changes, the total download amount of packages (83.4MiB), the download amount considering the cache of already downloaded archives (25.7MiB), an estimate of difference in disk usage after the actions (+3512KiB), a user prompt what to do.
For removed and purged packages, a suffix (a) is appended to a package name if a package was automatically installed.
The following answers to a user prompt are available:
To install a package:
cupt install
package_name
Example: cupt install exim4
To install several packages:
cupt install
package_name_1 package_name_2 ... package_name_N
Example: cupt install exim4 kvirc kdm
To upgrade one or more installed packages, use the same commands as for installing packages.
To remove a package:
cupt remove
package_name
Example:
cupt remove gdb
To remove several packages:
cupt remove
package_name_1 package_name_2 ... package_name_N
Example:
cupt remove gdb kvirc exim4
To upgrade as many packages as possible:
cupt full-upgrade
In the mode above, Cupt will even consider removing manually installed packages. If you want to restrict removing manually installed packages, do
cupt full-upgrade --no-remove
Or, shorter:
cupt safe-upgrade
There is the third upgrade mode, which is to be used for upgrades to the next major distribution releases:
cupt dist-upgrade
This subcommand upgrades Cupt itself and dpkg at first, and then calls new version of itself to upgrade the rest.
To purge a package, i.e. remove a package along with its configuration files and maybe some dynamically generated or runtime files:
cupt remove --purge
package_name
Or:
cupt purge
package_name
To purge several packages:
cupt purge
package_name_1 package_name_2 ... package_name_N
Example:
cupt purge gdb
Whenever Cupt needs to install, upgrade or downgrade packages it downloads
binary package archives (.deb
files) to an archive cache. These archives
are not removed after the first usage so they can be reused later.
If you do upgrades often, it's a good idea to periodically delete old package
archives to save the disk space. It's done by the subcommand autoclean
:
cupt autoclean
The command above will delete all package archives which do not belong to currently available repositories.
If you want to remove all archives from the cache, do
cupt clean
Both subcommands above will also remove the partially downloaded archive files which may stay around after the terminated download operations.
Cupt uses the same repository list format as APT. See sources.list(5).
Each version of a certain package has one or more sources where it comes from.
Each source consists of download information and a subrepository information, or release information.
The following properties belong to release information:
http://ftp.fi.debian.org/debian
testing
or stable
wheezy
or sid
main
or non-free
Debian
Debian-Security
6.0
Any of properties above may be empty.
To see available releases:
cupt policy
Example:
$ cupt policy Package files: /var/lib/dpkg/status installed/: o=dpkg,a=installed,l=,c=,v=,n=now http://ftp.fi.debian.org/debian stable/main: o=Debian,a=stable,l=Debian,c=main,v=6.0,n=squeeze http://security.debian.org stable/main: o=Debian,a=stable,l=Debian-Security,c=main,v=6.0,n=squeeze http://ftp.fi.debian.org/debian squeeze-updates/main: o=Debian,a=squeeze-updates,l=Debian,c=main,v=,n=squeeze-updates http://ftp.fi.debian.org/debian testing/main: o=Debian,a=testing,l=Debian,c=main,v=,n=wheezy http://ftp.fi.debian.org/debian testing/contrib: o=Debian,a=testing,l=Debian,c=contrib,v=,n=wheezy http://ftp.fi.debian.org/debian testing/non-free: o=Debian,a=testing,l=Debian,c=non-free,v=,n=wheezy http://ftp.fi.debian.org/debian unstable/main: o=Debian,a=unstable,l=Debian,c=main,v=,n=sid http://ftp.fi.debian.org/debian unstable/contrib: o=Debian,a=unstable,l=Debian,c=contrib,v=,n=sid http://ftp.fi.debian.org/debian unstable/non-free: o=Debian,a=unstable,l=Debian,c=non-free,v=,n=sid http://ftp.fi.debian.org/debian experimental/main: o=Debian,a=experimental,l=Debian,c=main,v=,n=experimental
The format of lines above:
basic_URI archive/
component: o=
vendor,a=
archive,l=
label,c=
component,v=
version,n=
codename
Note that "installed" release have the archive installed
and the codename now
.
To see the release descriptions of releases a version belongs to:
cupt show --with-release-info
package_name
Example:
cupt show --with-release-info dpkg
Each package version has a pin, an integer number.
Amongst all versions of the same binary package, the one who has maximal pin is policy, or preferred version. It's also candidate in APT terminology and in Cupt before 2.3.
Cupt assigns pins to package versions according to the APT documentation (apt_preferences(5)). Plus, it adds:
cupt::cache::pin::addendums::downgrade
)
cupt::cache::pin::addendums::hold
)
experimental
distribution (the option cupt::cache::pin::addendums::not-automatic
)
Note that sometimes the way APT assigns pins to versions is not the way described in its documentation, so Cupt's pins (modulo Cupt-specific additions described above) are not necessarily identical to what APT produces.
cupt policy
package_name
Example:
$ cupt policy dpkg dpkg: Installed: 1.15.5.6 Preferred: 1.15.8.10 Version table: 1.15.8.10 991 http://ftp.fi.debian.org/debian testing/main (signed) http://ftp.fi.debian.org/debian unstable/main (unsigned) http://ftp.se.debian.org/debian testing/main (signed) http://ftp.se.debian.org/debian unstable/main (signed) *** 1.15.5.6 100 /var/lib/dpkg/status installed/ (unsigned) 1.14.31 -1499 http://security.debian.org oldstable/main (signed)
In the output above we can see: installed version ('1.15.5.6'), preferred version ('1.15.8.10') and a version table. In total, 3 versions of dpkg are available.
For each version in version table we can see (on example of '1.15.8.10'): a version pin ('991'), a list of repositories where this version is available.
Each repository line is:
basic_URI archive/
component (signedness)
The repository marked as signed if it has a valid and verified cryptographic signature, and unsigned otherwise.
Starting with version 2.6, Cupt's behavior regarding merging versions having the same version string changed.
Firstly, Cupt now never merges installed versions with versions from
repositories, since dpkg provides no way to know if the installed version is
the same as the version from repository. All version strings of installed
versions now have ^installed
suffix, for example 1.2.4^installed
.
Secondly, if same versions from different repositories have different hash
sums, instead of discarding everything but first version Cupt now append
suffixes like ^dhs0
or ^dhs315
to version strings of non-first
versions, for example 1.2.4^dhs0
.
When there are more than one version for a package, Cupt provides following ways to select a version of the binary package in the arguments of the various subcommands:
cupt show dpkg
=
version.
Example:
cupt show dpkg=1.15.8.10
/
archive or /
codename.
Examples:
cupt show dpkg/unstable
cupt show dpkg/sid
The syntax described above is known as binary package version expression. In the cupt(1) manual page all subcommands which accept this syntax are clearly marked as such.
Many subcommands accept several arguments of the same meaning. Examples:
cupt show dpkg cupt libpqxx3=3.0.2-1
cupt install youtube-dl clive/stable
cupt remove libabc-dev libefg-dev libxyz-dev
cupt policy perl perl-base
You can use wildcards * and ? to select multiple package names. Examples:
cupt show perl-b*
Shows policy versions of packages which names start with perl-b
, for example
perl-base
and perl-byacc
.
cupt show perl-*/experimental
Shows experimental version of packages which names start with perl-
and
which have experimental versions. In other words, packages without a version in
experimental
distribution won't be selected.
cupt show *=2.0.0-1 | grep Package
List packages which have a version 2.0.0-1
. Using wildcards with versions is
maybe useless, but possible.
cupt full-upgrade xserver-xorg-*/installed
Perform a full upgrade but keep all installed packages with names starting with
xserver-xorg-
at their current versions.
cupt show ?aff*
Show policy versions of packages with names which have 'a', 'f' and 'f' on 2nd,
3rd and 4th positions (starting with 1st), respectively.
Starting with Cupt 2.4, there is a special subcommand iii
("install if
installed") for installing new versions of already installed packages while not
touching uninstalled packages. It behaves like install
, but ignores
arguments corresponding to not installed packages.
Examples:
git
) on multiple
machines, where some of these machines have that package installed and some
not. If you have a mechanism to send one command to all machines (say, ssh
multiplexer), you can send the command
cupt update && cupt iii gitThe second part of the command will do nothing on the machines where
git
is
not installed and will install the preferred version of the package git
where this package was installed.
cupt iii xserver-xorg-video*
You can use special positional options --install
, --remove
,
--purge
, --iii
, --satisfy
, --unsatisfy
, --markauto
,
--unmarkauto
, --asauto=yes
, --asauto=no
, --asauto=default
to
override the specified action until the end of the arguments or the next action
override option.
Examples:
cupt remove msmtp-mta --install exim4-daemon-light esmtp
Install packages exim4-daemon-light
and esmtp
, remove the package
msmtp-mta
.
cupt install exim4-daemon-light --remove msmtp-mta esmtp
Install the package exim4-daemon-light
, remove packages msmtp-mta
and esmtp
.
cupt purge libkate1 --remove libass4 --purge libdirac-decoder0
Remove the package libass4
, purge packages libkate1
and libdirac-decoder0
.
cupt install lightspark --remove gnash --satisfy "iceweasel (>= 5)"
Install the package lightspark
, remove the packae gnash
, and make sure that
iceweasel
(at least of version 5
) is installed.
cupt install sieve-connect --unsatisfy "iceweasel (<< 3.5.20)"
Install the package sieve-connect
, upgrade or remove the package iceweasel
if it is installed and has the version lower than 3.5.20
.
cupt install libv4l-0 cupt --iii libreadline6 vlc*
Install packages libv4l-0
and cupt
, install the preferred version of
libreadline6
if it's installed already, install the preferred versions of
packages which names start with vlc
and which are installed already .
cupt remove youtube-dl --install clive --satisfy "iceweasel (>= 4)" --purge cvs subversion --install git --unsatisfy "xinput (<< 1.5)"
Install packages clive
and git
, remove the package
youtube-dl
, purge packages cvs
and subversion
, make sure that the package
iceweasel
of version 4 or higher is installed, make sure that the package
xinput
either is not installed or has the version 1.5
or higher.
cupt install vlc --markauto xine
Install the package vlc
and mark the package xine
automatically installed.
cupt remove bindfs --unmarkauto fuse
You have a package bindfs
installed and now don't need it anymore.
cupt remove bindfs
shows that the package fuse
will be removed as it was a
dependency of bindfs
; you however decide you want to keep it in the system
and run the command above.
cupt install mumble libgeoip1 geoip-dbg
(in this and following examples we suppose that currently mumble
is
manually installed, libgeoip1
is automatically installed, geoip-dbg
is
not installed)
geoip-dbg
will be manually installed.
cupt install --asauto=yes mumble libgeoip1 geoip-dbg
mumble
will be marked as automatically installed, geoip-dbg
will be automatically installed
cupt install --asauto=no mumble libgeoip1 geoip-dbg
libgeoip1
will be marked as manually installed, geoip-dbg
will be manually installed
cupt install --asauto=yes mumble --asauto=default libgeoip1 geoip-dbg
mumble
will be marked as automatically installed, geoip-dbg
will be manually installed
Alternatively, you can supply some suffixes to package names, that suffixes override the current action for the suffixed package(s) only:
You can use the + modifier in subcommands: remove
, purge
. Examples:
cupt remove youtube-dl clive+
: remove youtube-dl
, install clive
cupt purge exim4 msmtp-mta+ mutt/experimental+
: remove exim4
along with
its configuration files, install msmtp-mta
and mutt
(from experimental)
You can use the - modifier in the install
and *-upgrade
-like subcommands. Examples:
cupt install gnuchess/unstable gnome-chess pychess-
: install gnuchess
(from unstable
), gnome-chess
, remove pychess
cupt full-upgrade cvs-
:
a) cvs
is installed -> do an upgrade with removing cvs
b) cvs
is not installed -> do an upgrade, keeping cvs
uninstalled
Cupt has an integration (through a special download method) with
debdelta(1). To make Cupt try to download archive deltas before downloading
full archives, just install the package debdelta
and that's it. No manual
invocation of debdelta utilities is needed.
See more about debdelta project here: http://debdelta.debian.net/.
To list the dependencies of one or more package versions, use the subcommand depends
:
cupt depends libc6/testing arora/unstable
If you don't want to see Recommends there, use --important
:
cupt depends --important libc6/testing
If, on the contrary, you want to see even Suggests, use --with-suggests
:
cupt depends --with-suggests libc6/testing
You can also list selected relations recursively, using --recurse
:
cupt depends --recurse dpkg
If you want to see a reverse dependencies of some version, use the subcommand rdepends
:
cupt rdepends xz-utils
All the command switches described here are also applicable to rdepends
as well.
Starting with Cupt 2.3 an action summary is shown by default.
To remove it, use --no-summary
command-line option. To remove it
permanently, set the configuration option
cupt::console::actions-preview::show-summary
to no
.
Alternatively, you may want to hide details and view only a summary, this can
be achieved by specifying --summary-only
command-line option. This option
can be useful in a conjunction with --simulate
command-line option to have
a quick preview.
You can request more information to show in the action preview prompt:
--show-versions
(-V
) option. Example:
$ cupt install gcc-4.6 -V The following packages will be installed: cpp-4.6 [4.6.0~rc1-1] gcc-4.6 [4.6.0~rc1-1] gcc-4.6-base [4.6.0~rc1-1] libppl-c4 [0.11.2-3] libppl9 [0.11.2-3] libpwl5 [0.11.2-3] libquadmath0 [4.6.0~rc1-1] The following packages will be upgraded: binutils [2.20.1-15 -> 2.21.0.20110302-2] libcloog-ppl0 [0.15.9-2 -> 0.15.9-3] libgcc1 [1:4.5.2-1 -> 1:4.6.0~rc1-1] libgomp1 [4.5.2-1 -> 4.6.0~rc1-1]
--show-size-changes
(-Z
) option. Example:
$ cupt install gcc-4.6 -Z The following packages will be installed: cpp-4.6 <+10.6MiB> gcc-4.6 <+15.0MiB> gcc-4.6-base <+192KiB> libppl-c4 <+4264KiB> libppl9 <+1176KiB> libpwl5 <+100KiB> libquadmath0 <+496KiB> The following packages will be upgraded: binutils <+1300KiB> libcloog-ppl0 libgcc1 <+8192B> libgomp1 <+16.0KiB>
--show-archives
(-A
) option. Example:
$ cupt install gcc-4.7 -A The following packages will be installed: cpp-4.7 [(experimental)] gcc-4.7 [(experimental)] gcc-4.7-base [(experimental)] libitm1 [(experimental)] The following packages will be upgraded: libgcc1 [(installed,testing) -> (experimental)] libgomp1 [(installed,testing) -> (experimental)] libquadmath0 [(installed,testing) -> (experimental)]
--show-codenames
(-N
) option. Example:
$ cupt install libstreams0 -N The following packages will be upgraded: libstreamanalyzer0 [(now,squeeze) -> (wheezy,sid)] libstreams0 [(now,squeeze) -> (wheezy,sid)]
--show-components
(-C
) option. It's mostly useful in conjunction
with --show-codenames
or --show-archives
. Example:
$ cupt install libstreams0 -CN The following packages will be upgraded: libstreamanalyzer0 [(now,squeeze/main) -> (wheezy/main,sid/main)] libstreams0 [(now,squeeze/main) -> (wheezy/main,sid/main)]
--show-vendors
(-O
) option. Useful if you have repositories of more
than one vendor and usually in conjunction with -V
, -A
or -N
. Example:
$ cupt install libstreams0 -VNO The following packages will be upgraded: libstreamanalyzer0 [0.7.2-1+b1(dpkg:now,Debian:squeeze) -> 0.7.7-1(Debian:wheezy,Debian:sid)] libstreams0 [0.7.2-1+b1(dpkg:now,Debian:squeeze) -> 0.7.7-1(Debian:wheezy,Debian:sid)]
--show-reasons
(-D
) option.
Example:
$ cupt install gcc-4.6 -D The following packages will be installed: cpp-4.6 reason: gcc-4.6 4.6.0~rc1-1 depends on 'cpp-4.6 (= 4.6.0~rc1-1)' gcc-4.6 reason: user request gcc-4.6-base reason: cpp-4.6 4.6.0~rc1-1 depends on 'gcc-4.6-base (= 4.6.0~rc1-1)' libppl-c4 reason: gcc-4.6 4.6.0~rc1-1 depends on 'libppl-c4' libppl9 reason: gcc-4.6 4.6.0~rc1-1 depends on 'libppl9' libpwl5 reason: libppl-c4 0.11.2-3 depends on 'libpwl5' libquadmath0 reason: gcc-4.6 4.6.0~rc1-1 depends on 'libquadmath0 (>= 4.6.0~rc1-1)' The following packages will be upgraded: binutils reason: gcc-4.6 4.6.0~rc1-1 depends on 'binutils (>= 2.21~)' libcloog-ppl0 reason: gcc-4.6 4.6.0~rc1-1 depends on 'libcloog-ppl0 (>= 0.15.9-3~)' libgcc1 reason: gcc-4.6 4.6.0~rc1-1 depends on 'libgcc1 (>= 1:4.6.0~rc1-1)' libgomp1 reason: gcc-4.6 4.6.0~rc1-1 depends on 'libgomp1 (>= 4.6.0~rc1-1)'
--show-not-preferred
option.
This is enabled for upgrades by default.
For non-upgrade example, the next command may be used to determine the
installed packages which have a better candidate (again, usually that means
they can be upgraded):
$ cupt install --no-auto-remove --show-not-preferred -V The following packages will have a not preferred version: comerr-dev [2.1-1.41.12-4], preferred: 2.1-1.41.12-4stable1 e2fslibs [1.41.12-4], preferred: 1.41.12-4stable1 e2fsprogs [1.41.12-4], preferred: 1.41.12-4stable1 libcomerr2 [1.41.12-4], preferred: 1.41.12-4stable1 libkadm5clnt-mit7 [1.8.3+dfsg-4], preferred: 1.8.3+dfsg-4squeeze2 libkadm5srv-mit7 [1.8.3+dfsg-4], preferred: 1.8.3+dfsg-4squeeze2 libkdb5-4 [1.8.3+dfsg-4], preferred: 1.8.3+dfsg-4squeeze2 libss2 [1.41.12-4], preferred: 1.41.12-4stable1 linux-image-2.6.32-5-amd64 [2.6.32-34squeeze1], preferred: 2.6.32-38 openssh-client [1:5.5p1-6], preferred: 1:5.5p1-6+squeeze1 tzdata [2011g-1], preferred: 2011k-0squeeze1
You can also combine them.
Instead of displaying the reasons for all changed packages, starting with Cupt 2.6 you can request the reason chain for the specific package. To do this, use the choice rc. Example:
$ cupt -s install exim4-daemon-light The following packages will be installed: bsd-mailx exim4-base exim4-config exim4-daemon-light liblockfile-bin liblockfile1 The following packages will be removed: msmtp-mta The following packages are no longer needed and thus will be auto-removed: libgsasl7 libntlm0 msmtp Action summary: 1 manually installed and 5 automatically installed packages will be installed 1 manually installed packages will be removed 3 automatically installed packages are no longer needed and thus will be auto-removed Need to get 2241KiB/2241KiB of archives. After unpacking 3006KiB will be used. Do you want to continue? [y/N/q/a/rc/?] rc Enter a binary package name to show reason chain for (empty to cancel): bsd-mailx bsd-mailx: exim4-base 4.80-6 recommends 'mailx' exim4-base: exim4-daemon-light 4.80-6 depends on 'exim4-base (>= 4.80)' exim4-daemon-light: user request Do you want to continue? [y/N/q/a/rc/?] rc Enter a binary package name to show reason chain for (empty to cancel): msmtp-mta msmtp-mta: exim4-daemon-light 4.80-6 conflicts with 'mail-transport-agent' exim4-daemon-light: user request Do you want to continue? [y/N/q/a/rc/?]
In a solution preview (action preview prompt) you have an ability to specify more package expressions and a restart a resolving process. To do this, use the choice a. Example:
$ cupt install gnash The following packages will be installed: dmsetup dosfstools freepats fuse-utils gconf2-common gnash gnash-common gstreamer0.10-ffmpeg gstreamer0.10-fluendo-mp3 gstreamer0.10-plugins-bad gstreamer0.10-plugins-base gvfs hdparm libass4 libatasmart4 libboost-thread1.42.0 libcdaudio1 libcelt0-0 libexempi3 libexif12 libfftw3-3 libflite1 libfuse2 libgconf2-4 libgdu0 libgme0 libgnome-keyring0 libgsf-1-114 libgsf-1-common libgtkglext1 libgudev-1.0-0 libidl0 libiptcdata0 libkate1 liblvm2app2.2 libmimic0 libmms0 libmodplug1 libmusicbrainz4c2a libntfs-3g75 libntfs10 libofa0 libopenspc0 liborbit2 liborc-0.4-0 libparted0debian1 libpolkit-backend-1-0 libraptor2-0 librasqal3 librsvg2-2 libsgutils2-2 libslv2-9 libsoundtouch0 libvisual-0.4-0 libvisual-0.4-plugins libwildmidi1 libyajl1 libzbar0 mtools ntfs-3g ntfsprogs policykit-1 policykit-1-gnome udisks The following packages will be upgraded: libblkid1 libdbus-glib-1-2 libdevmapper1.02.1 libglib2.0-0 libgstreamer-plugins-base0.10-0 libgstreamer0.10-0 libpcre3 libpolkit-agent-1-0 libpolkit-gobject-1-0 librdf0 libschroedinger-1.0-0 libudev0 The following packages will be removed: libeggdbus-1-0(a) librasqal2(a) Need to get 62.3MiB/62.3MiB of archives. After unpacking 105MiB will be used. Do you want to continue? [y/N/q/a/?] a Enter a package expression (empty to finish): libgnome-keyring0- Enter a package expression (empty to finish): The following packages will be installed: freepats gnash gnash-common gstreamer0.10-ffmpeg gstreamer0.10-fluendo-mp3 gstreamer0.10-plugins-bad gstreamer0.10-plugins-base libass4 libboost-thread1.42.0 libcdaudio1 libcelt0-0 libexempi3 libexif12 libfftw3-3 libflite1 libgme0 libgsf-1-114 libgsf-1-common libgtkglext1 libgudev-1.0-0 libiptcdata0 libkate1 libmimic0 libmms0 libmodplug1 libmusicbrainz4c2a libofa0 libopenspc0 liborc-0.4-0 libraptor2-0 librasqal3 librsvg2-2 libslv2-9 libsoundtouch0 libvisual-0.4-0 libvisual-0.4-plugins libwildmidi1 libyajl1 libzbar0 The following packages will be upgraded: libglib2.0-0 libgstreamer-plugins-base0.10-0 libgstreamer0.10-0 libpcre3 librdf0 libschroedinger-1.0-0 libudev0 The following packages will be removed: librasqal2(a) Leave the following dependencies unresolved: gstreamer0.10-plugins-base 0.10.30-1 recommends 'gvfs' Need to get 56.2MiB/56.2MiB of archives. After unpacking 85.6MiB will be used. Do you want to continue? [y/N/q/a/?]
The effect above is the same as if you specified
cupt install gnash libgnome-keyring0-
in the command line from the start.
Starting from Cupt 2.6 you can specify multiple expressions on the same line.
Some parts of the actions preview will be colored if you enable colors by
setting the option cupt::console::use-colors
to auto
or yes
(see
cupt.conf(5)).
In the colored output different colors specify different actions types. Manually installed package names and potentially unsafe actions have bold colors.
There are two types of configuration variables - regular (or scalar) and list ones. Scalar options have a single scalar value, and list option's value is a list of strings. Modifying a scalar option means substituting its previous value completely in favor of new specified one, modifying a list option means adding one more string to the existing list.
Cupt has many configuration variables, some of them may be specified/overridden using command-line switches, some needs to be modified explicitly. See the full variable list and descriptions at cupt.conf(5).
To see the current configuration, use config-dump
subcommand. Examples:
$ cupt config-dump | grep recommends apt::install-recommends "yes"; cupt::resolver::keep-recommends "yes"; cupt::resolver::tune-score::failed-recommends "600";
$ cupt config-dump | grep "methods " cupt::downloader::protocols::copy::methods { "file"; }; cupt::downloader::protocols::debdelta::methods { "debdelta"; }; cupt::downloader::protocols::file::methods { "file"; }; cupt::downloader::protocols::ftp::methods { "curl"; }; cupt::downloader::protocols::ftp::methods { "wget"; }; cupt::downloader::protocols::http::methods { "curl"; }; cupt::downloader::protocols::http::methods { "wget"; }; cupt::downloader::protocols::https::methods { "curl"; }; cupt::downloader::protocols::https::methods { "wget"; };
You can distinguish list options there by figure brackets around the values.
Cupt reads configuration first from APT configuration files (conforming to the
APT documentation (apt.conf(5))), then from Cupt-specific configuration
files (see cupt.conf(5)/cupt::directory::configuration), then applies those
specified in the command line using --option
(or -o
) switch or by
dedicated switches corresponding to the option.
To modify a regular option in the command line, use
-o
option_name=
new_value
Example:
cupt install kmail -o cupt::console::assume-yes=yes
To modify a list option (i.e. add a new string) in the command line, use
-o
option_name::=
added_string
Example:
cupt -s update -o "apt::update::pre-invoke::=ls /var"
You can use -o
multiple times.
If you want to know, is a certain package automatically installed or not, do
cupt show --installed-only
package_name
Example:
cupt show --installed-only dpkg
To list manually installed packages:
cupt showauto --invert
To list automatically installed packages:
cupt showauto
To mark some package(s) as automatically installed, use the markauto
subcommand, for example:
cupt markauto libqtcore4 udev
To mark some package(s) as manually installed, use the unmarkauto
subcommand, for example:
cupt unmarkauto tar traceroute
When doing installs/upgrades/etc. all newly installed packages not requested by user are marked as automatically installed. For every package management actions Cupt's resolver can determine if some automatically installed packages are not needed anymore. Automatically installed packages, which are no more a part of any valuable dependency chain of manually installed packages, are deleted by default. The names of this process is auto-removal.
If you don't want auto-removal to be performed, use --no-auto-remove
switch
or set the option cupt::resolver::auto-remove
to no
.
All forward interdependencies between packages can be divided into two groups -- hard and soft ones. While hard dependencies must be satisfied in order to make a system (or proposed solution) valid, soft ones may stay unsatisfied. Hard dependencies are 'Pre-Depends', 'Depends'. Soft dependencies are 'Recommends', 'Suggests' and 'Enhances'. Cupt completely ignores 'Enhances', but can act on 'Recommends' or 'Suggests'. All the remainder of this section is dedicated to the last two.
By default, Cupt ignores 'Suggests', but tries to, with an average priority, satisfy new dependencies in 'Recommends' and keep already satisfied 'Recommends'.
You can use the following options to change the behavior:
no
to not satisfy new 'Recommends'. See also the command-line
switch --no-install-recommends
.
no
to make resolver ignore all 'Recommends'
yes
to make resolver try to satisfy new 'Suggests'
yes
to make resolver try to keep already satisfied 'Suggests'
Note 1: having the option apt::install-
X set to yes
without
cupt::resolver::keep-
X set to yes
as well is useless, Cupt's native
resolver will warn about it.
Note 2: even when the appropriate apt::install-
X option is set, Cupt
ignores not changed soft dependencies. Say, if there is an installed package
gettext
of version 1.2
which Recommends: cvs
, a relation cvs
is not
satisfied in the system, and gettext
is upgraded to a version 1.3
which also
have the same Recommends: cvs
, Cupt won't try to satisfy this dependency.
After you agree with a proposed solution (by entering a positive answer in an action preview prompt) Cupt starts a package installation process, which is done in several phases:
*.deb
). May be empty
if no packages are needed or all needed packages are already in the cache.
dpkg::pre-invoke
and
dpkg::pre-install-pkgs
) if any. Examples of them are apt-listchanges(1),
apt-listbugs(1) and dpkg-preconfigure(1). These hooks may ask questions
and cancel the whole package installation process.
dpkg::post-invoke
) if any.
Note: Cupt itself does not ask anything from the user during the package installation process. All questions usually come from programs which Cupt calls.
Example:
1: # cupt install cmake
This is a command line.
2: Building the package cache... 3: Initializing package resolver and worker... 4: Scheduling requested actions... 5: Resolving possible unmet dependencies...
These are (optional) information messages from Cupt.
6: 7: The following 4 packages will be INSTALLED: 8: 9: libarchive1 libcurl3 libssh2-1 libxmlrpc-core-c3 10: 11: The following 2 packages will be UPGRADED: 12: 13: cmake cmake-data 14: 15: Need to get 5637KiB/6007KiB of archives. After unpacking 1963KiB will be freed. 16: Do you want to continue? [y/N/q/a/?] y
This is an action preview prompt.
17: Performing requested actions:
This is the 'preparation' phase.
18: Get:1 http://ftp.fi.debian.org/debian wheezy/main,sid/main,wheezy/main,sid/main cmake-data 2.8.4+dfsg.1-2 [1224KiB] 19: Get:2 http://ftp.fi.debian.org/debian wheezy/main,sid/main,wheezy/main,sid/main cmake 2.8.4+dfsg.1-2 [4102KiB] 20: Get:3 http://ftp.fi.debian.org/debian wheezy/main,sid/main,wheezy/main,sid/main libarchive1 2.8.4-1 [149KiB] 21: Get:4 http://ftp.fi.debian.org/debian wheezy/main,sid/main,wheezy/main,sid/main libxmlrpc-core-c3 1.16.33-2 [162KiB] 22: Fetched 5637KiB in 1s.
This is the 'downloading' phase.
23: Reading changelogs... Done
This is the 'pre-hooks' phase (namely, apt-listchanges in this case).
24: Selecting previously deselected package libarchive1. 25: (Reading database ... 94022 files and directories currently installed.) 26: Unpacking libarchive1 (from .../libarchive1_2.8.4-1_i386.deb) ... 27: Setting up libarchive1 (2.8.4-1) ... 28: Processing triggers for man-db ... 29: Selecting previously deselected package libssh2-1. 30: (Reading database ... 94034 files and directories currently installed.) 31: Unpacking libssh2-1 (from .../libssh2-1_1.2.6-1_i386.deb) ... 32: Setting up libssh2-1 (1.2.6-1) ... 33: Selecting previously deselected package libcurl3. 34: (Reading database ... 94041 files and directories currently installed.) 35: Unpacking libcurl3 (from .../libcurl3_7.21.3-1_i386.deb) ... 36: Setting up libcurl3 (7.21.3-1) ... 37: Selecting previously deselected package libxmlrpc-core-c3. 38: (Reading database ... 94058 files and directories currently installed.) 39: Unpacking libxmlrpc-core-c3 (from .../libxmlrpc-core-c3_1.16.33-2_i386.deb) ... 40: Setting up libxmlrpc-core-c3 (1.16.33-2) ... 41: (Reading database ... 94080 files and directories currently installed.) 42: Removing cmake ... 43: Processing triggers for man-db ... 44: (Reading database ... 94071 files and directories currently installed.) 45: Preparing to replace cmake-data 2.8.1-2 (using .../cmake-data_2.8.4+dfsg.1-2_all.deb) ... 46: Unpacking replacement cmake-data ... 47: Setting up cmake-data (2.8.4+dfsg.1-2) ... 48: emacsen-common: Handling install of emacsen flavor emacs 49: Processing triggers for man-db ... 50: Selecting previously deselected package cmake. 51: (Reading database ... 94087 files and directories currently installed.) 52: Unpacking cmake (from .../cmake_2.8.4+dfsg.1-2_i386.deb) ... 53: Setting up cmake (2.8.4+dfsg.1-2) ... 54: Processing triggers for man-db ...
This is the 'action themselves' phase, dpkg's output and messages from packages' maintainer scripts.
In the case the process fails at phase 'action themselves' (either due to bug in Cupt, dpkg, or packages), you'll see some error messages from dpkg and then error messages from Cupt.
Source packages are the files from which binary packages are built. They have two major differences:
To view a source package information:
cupt showsrc
package_name
Example:
cupt showsrc cupt
You can specify more than one package, for example:
cupt showsrc sed mawk
To view available source versions, pin info and releases versions come from,
use policysrc
subcommand. Its output is the same as for policy
subcommand. Example:
cupt policysrc sed mawk
To download source package(s), use the source
subcommand, for example:
cupt source clive youtube-dl
By default source
subcommand also unpack the package so it's ready for the
exploring and building. To prevent this, use the --download-only
switch.
Also, you can download only one part of source package, use switches
--tar-only
, --diff-only
and --dsc-only
for that.
If you want to build binary packages out of a source one, you will have to
satisfy source package's build dependencies before. Use the subcommand
build-dep
to do it, for example:
cupt build-dep clive
All new packages, installed by this subcommand, will be marked as automatically installed, and will be a subject for auto-removal at next package management action.
So, the process of building binary packages out of source one may be, taking
clive
package as an example:
cupt source clive cupt build-dep clive cd clive-2.2.13 && debuild && cd ../ [...] cupt install
The last line will remove all unneeded anymore packages (given auto-removal is
turned on), including those installed by build-dep
.
You can select source package versions in two ways:
cupt showsrc game-music-emu=0.5.5-2 gcc-defaults/experimental
$ cupt show g++/experimental | head -n5 Package: g++ Version: 4:4.6.0-2exp1 Status: not installed Source: gcc-defaults Source version: 1.101exp1 $ cupt showsrc g++/experimental | head -n3 Package: gcc-defaults Binary: cpp, g++, g++-multilib, gobjc, gobjc-multilib, gobjc++, gobjc++-multilib, gfortran, gfortran-multilib, gccgo, gccgo-multilib, libgcj-common, gcj, gij, libgcj-bc, gcj-jdk, gcj-jre-headless, gcj-jre, gcc, gcc-multilib, gdc, gcc-spu, g++-spu, gfortran-spu Version: 1.101exp1Here,
g++
is a binary package name and gcc-defaults
is a source package
name. In the second command, as there is no source package g++
, a binary
package was looked up, a version 4:4.6.0-2exp1
of it was found, and then a
source version was selected as if you specified
cupt showsrc gcc-defaults=1.101exp1in the first place.
You can supply both syntaxes to all subcommands which work with source package versions, examples:
cupt build-dep clive/unstable
cupt source man-db=2.5.9-4>
Cupt has a shell-like environment, in which you can supply any subcommand as if you typed it in to the command line, but without preceding cupt command name.
Example:
$ cupt shell This is interactive shell of cupt package manager. cupt>policy libsoprano4 libsoprano4: Installed: 2.2.2+dfsg.1-1 Preferred: 2.3.0+dfsg.1-2 Version table: 2.3.0+dfsg.1-2 501 http://debian.org.ua/debian unstable/main (signed) *** 2.2.2+dfsg.1-1 100 /var/lib/dpkg/status installed/ (unsigned) 2.3.0+dfsg.1-1 2 http://debian.org.ua/debian experimental/main (signed) cupt>depends libsoprano4/experimental libsoprano4 2.3.0+dfsg.1-1: Depends: libc6 (>= 2.2.5) Depends: libclucene0ldbl (>= 0.9.20-1) Depends: libgcc1 (>= 1:4.1.1) Depends: libqt4-dbus (>= 4:4.5.2) Depends: libqt4-network (>= 4:4.5.2) Depends: libqt4-xml (>= 4:4.5.2) Depends: libqtcore4 (>= 4:4.5.2) Depends: libstdc++6 (>= 4.1.1) Depends: soprano-daemon (= 2.3.0+dfsg.1-1) cupt>rdepends soprano-daemon soprano-daemon 2.3.0+dfsg.1-2: Reverse-Depends: libsoprano4 2.3.0+dfsg.1-2: soprano-daemon (= 2.3.0+dfsg.1-2) cupt>show soprano-daemon Package: soprano-daemon Version: 2.3.0+dfsg.1-2 Status: not installed Source: soprano Priority: optional Section: utils Size: 153KiB Uncompressed size: 536KiB Maintainer: Debian Qt/KDE Maintainers <debian-qt-kde@lists.debian.org> Architecture: amd64 Depends: libc6 (>= 2.2.5), libgcc1 (>= 1:4.1.1), libqt4-dbus (>= 4:4.5.2), libqt4-network (>= 4:4.5.2), libqtcore4 (>= 4:4.5.2), libraptor1 (>= 1.4.18), librdf0 (>= 1.0.9), libsoprano4 (>= 2.3.0), libstdc++6 (>= 4.1.1) Conflicts: libsoprano-dev (<< 2.3.0+dfsg.1-1), libsoprano4 (<< 2.3.0+dfsg.1-1) Replaces: libsoprano-dev (<< 2.3.0+dfsg.1-1), libsoprano4 (<< 2.3.0+dfsg.1-1) URI: http://debian.org.ua/debian/pool/main/s/soprano/soprano-daemon_2.3.0+dfsg.1-2_amd64.deb MD5: af29b39a741d9a52de91c8e5562e0609 SHA1: 1dfebe27b79f10911358949e56f89c64b43265eb SHA256: d5b290a60de56f6a7e0af44f5265c6668bb4689204556b9022a5233a808349fc Description: daemon for the Soprano RDF framework Soprano is a pluggable RDF storage, parsing, and serialization framework based on Qt 4. Soprano is targeted at desktop applications that need to store RDF data. Its API has been optimized for simplicity and ease of use, while its modular structure allows it to use various different RDF storage implementations as its backend. . This package contains the Soprano daemon, D-Bus service, parser plugins, and a storage plugin for the Redland RDF Application Framework. Homepage: http://soprano.sourceforge.net cupt>--simulate install libsoprano4 The following 1 packages will be INSTALLED: soprano-daemon The following 1 packages will be UPGRADED: libsoprano4 Need to get 700KiB/700KiB of archives. After unpacking 196KiB will be used. Do you want to continue? [y/N/q] q cupt>exit
What this mode may be useful for:
shell
subcommand, as all others, recognizes cupt(1)/Common options,
you can use that to set some configuration options for all the shell session.
Example:
cupt shell --simulate -o apt::install-recommends=noInstalling new recommends will be switched off for all the session inside the shell, and no real actions will be performed for subcommands that change the system. Note that you can override them (by supplying
-o cupt::worker::simulate=no
and -o apt::install-recommends=yes
, respectively, for this example).
As of Cupt version 2.3, you can limit the used package repositories for each package manager invocation without editing the sources.list(5). The limiting can be done by repository archive names or codenames.
The common syntax is:
limiting_option=
value,
value,
...,
value
Use the option --include-archives
or --include-codenames
to use only
specified repositories. In other words, no matter how many repositories are
present in the sources.list(5), only packages from specified repositories
will be considered.
Examples:
cupt rdepends --include-archives=testing,unstable libffi5
List reverse-dependencies of libffi5
package in testing
and
unstable
.
cupt safe-upgrade --include-archives=stable,stable-updates
Upgrade the system, considering only packages from archives stable
and
stable-updates
.
cupt install xserver-xorg --include-codenames=wheezy
Install the package xserver-xorg
, if its version in the wheezy
is different
than installed one or there is no such package installed. If any packages need
to be changed in order to process this query (e.g., installing new dependencies
or removing conflicting packages), only versions from wheezy
will be
considered.
cupt search --names-only '.*?-perl' --include-archives=experimental
Search for Perl module packages in experimental
.
Use the option --exclude-archives
or --exclude-codenames
to not use
specified repositories. If a package version has multiple repositories and at
least one of them is not excluded, the version will be visible.
Examples:
search -n cupt --exclude-archives=stable
Search for Cupt-related packages, but ignore packages from stable
.
cupt full-upgrade --exclude-codenames=sid,experimental
Upgrade not using packages which come only from sid
or experimental
.
Limiting repositories can also be done by modifying the
cupt::cache::limit-releases::*
family of configuration variables directly.
Note: unlike the pinning settings which only set version priorities, limiting repositories is an "absolute" tool. For example, if the version has a very negative pin, it will be still considered for installation if there is no better choices, but if all repositories which contain a version are not used, Cupt will forgot about that version from a very start and forever, without exceptions.
As of Cupt version 2.2, most actions that effectively change the state of the system or Cupt itself (namely, working with packages, updating repository metadata and working with system snapshots) are logged by default.
The place (the file path) where to place the logs is determined by the option
cupt::directory::log
. By default, logs are written to /var/log/cupt.log
.
There are 4 levels of logging:
Logging levels are set for each subsystem independently. By default, the
logging level for package changes is set to 2
, other logging levels are set
to 1
. To change the logging level for some subsystem, use the option
cupt::worker::log::levels::
subsystem. See cupt.conf(5) for details.
Finally, if you want to disable the logging entirely, set the option
cupt::worker::log
to no
.
Functional selectors is a extended syntax for selecting binary or source versions by their properties or relations. It's available starting with Cupt 2.6.
It can be used whereever
binary package version expression and
source package version expression can be
used. It addition, it can be used as a parameter to search --fse
.
The full syntax and function reference can be found in cupt_functionalselectors(7).
Examples of functional selector expressions (FSE):
essential()
All essential versions (those which have Essential: yes
).
In the command line it will be
cupt show 'essential()'
or
cupt search --fse 'essential()'
e()
The same. e
is a shortcut for essential
.
package:name(.*req.*)
All versions which package name contains the substring req
.
Pn(.*req.*)
Same. Pn
is a shortcut for package:name
.
and(Pn(b.*), e())
All versions which are essential and which package name starts with a letter
b
.
and(Pn(b.*), e)
Same. In subexpressions ()
can be omitted for functions with no parameters.
Pn(b.*) & e()
Same. x & y & z
is a special shortcut syntax for and(x, y, z)
.
or(e, provides(vim))
Versions which are essential or provide vim
virtual package.
e() | provides(vim)
Same. x | y | z
is a special shortcut syntax for or(x, y, z)
.
xor(Pn(vim.*), provides(vim))
Versions, which either have a package name which starts with vim
or provide
vim
virtual package, but not both.
not(Pn(vim-nox)) & provides(vim)
Versions which provide vim
virtual package, excluding the package
vim-nox
.
installed() & priority(extra)
Installed versions of priority extra
.
maintainer(.*lists.alioth.debian.org.*) & priority(required)
Versions of priority required
and which maintainer email address is a
mailing list hosted on the Alioth service.
field(Python-Version, .*2\.3.*)
Versions which have a non-standard field Python-Version
with a substring
2.3
somewhere in the value.
Pn(.*python.*) & section(utils)
Versions from utils
section having python
somewhere in the package
name.
package:installed() & release:component(non-free)
All versions of installed packages which come from non-free
release
component.
uploaders(.*gmail\.com>)
All source versions where at least one uploader has a Gmail mail address.
recommends(installed() & e)
All packages which are recommended by installed essential packages.
and( Ys(Pn(xfce4.*))|Ye(Pn(xfce4.*)), not(Pn(xfce4.*)) )
All packages which are Suggests (Ys
) or Enhances (Ye
) of any package
which name starts with xfce4
, excluding xfce4...
packages themselves.
with(_x, Pn(xfce4.*), and( Ys(_x)|Ye(_x), not(_x)) )
Same.
with(_x, Pn(grep), reverse-depends(_x) | reverse-recommends(_x))
All versions which depend on or recommend grep
.
fmap(Pn(grep), reverse-depends,reverse-recommends)
Same.
build-depends(Pn(grep))
Build-dependencies of the all available versions of the source package grep
.
recursive(_r, Pn(cupt)&i, and( Yd(_r)|Yr(_r), not(Pn(.*downloadmethod.*))) )
All direct and indirect depended on and recommended packages (excluding those
which have downloadmethod
in the package name from the recursive chain) of
the installed version of cupt
package.
For complex FSEs like this it, the multiline no-shortcut equivalent might be preferred:
#!/bin/sh cupt search --fse ' recursive(_r, package:name(cupt) & installed(), and( depends(_r) | recommends(_r), not( package:name(.*downloadmethod.*) ) ) )'
System snapshots, created by Cupt, consist of binary archives of installed packages. The idea is you create snapshots at some time, and when after some changes you system is messed up, you can go back to the working set of packages.
Caveats:
It's recommended not to use this feature if you have better alternatives available (for example, LVM snapshots or filesystem-level snapshots).
To create a snapshot, use
cupt snapshot save
snapshot_name
Example:
cupt snapshot save 20110405
To revert the system to a saved snapshot, use
cupt snapshot load
snapshot_name
Example:
cupt snapshot load 20110405
You can also list the available snapshots (cupt snapshot list
), rename
(cupt snapshot rename
), remove (cupt snapshot remove
).
There is an ability to change the system not by specifying versions of packages
to install or remove, but by specifying dependencies just as some binary
package have them. The subcommand to perform this is satisfy
:
cupt satisfy
dependency_expression_1 ... dependency_expression_N
Examples:
cupt satisfy "xserver-xorg (>> 1.6)" "xserver-common (<< 1.6.1~)"
cupt satisfy "nautilus (>= 2.16.0), libnautilus-extension1 (>= 2.16.0), wget (>= 1.10.0)"
cupt satisfy "youtube-dl | clive"
If you want some dependency expression to be unsatisfied instead, add minus
(-
) to the end of an argument:
cupt satisfy mail-reader-
Be careful:
cupt satisfy vim emacs-
: install vim or anything which provides it, remove emacs and anything which provides it
cupt satisfy "vim, emacs-"
: remove emacs, vim and anything which provides them
If you happen to have a system, where the disk space is very limited, doing a big upgrades or installations can be a problem. For example, you have 1 GiB of disk space total, installed packages occupy 600 MiB of them, now you want to do a massive upgrade, and it's needed to download 500 MiB of archives to do that, and after the upgrade packages will occupy 700 MiB. Here, the simple approach of download everything needed and then upgrade everything needed wouldn't work since there is no 1100 MiB of the disk space available. The answer is to do the upgrade by smaller parts. Now, although it can be done by selecting groups of packages to upgrade or install by hand, Cupt can try to do it automatically.
To enable the changeset-based mode you will be need specify how many space is available for downloaded files. It's impossible to compute the amount reliably since changed packages may use some additional space (for example, kernel upgrades) or you may write or remove something to the filesystem before/while the upgrading is progressing. A rough guess of 'amount of free space minus 100 MiB' is a good start.
After you computed the disk space you can give for package archives, specify it
as a value, in bytes, for cupt::worker::archives-space-limit
option.
Example:
cupt full-upgrade -o cupt::worker::archives-space-limit=200000000
Once this option is set, an action scheduler will try to divide all the changes into smaller consecutive changesets so the following conditions are met:
If such changesets are found, Cupt will proceed with actions, otherwise an error with a minimal suitable number will be printed.
For each changeset, package archives will be downloaded before doing actions and removed before the next changeset begins.
Sometimes it is a good idea to keep installed binary packages which were built out of same source package (let's call them related) to have the same source version.
Related packages are synchronized if they have the same source version, i.e. binary version may not be the same. For example, the following pairs are usually synchronized:
qprint 1.0-1
and qprint-doc 1.0-1
qprint 1.0-1+b2
and qprint-doc 1.0-1
But the following are usually not:
qprint 1.0-1
and qprint-doc 1.0-2
Cupt's resolver tries to synchronize the versions of related binary packages if
the option cupt::resolver::synchronize-by-source-versions
is set to
non-default value.
Note: this option works properly only if you have source packages available for all the packages touched by a resolver.
Note: this option doesn't touch installed packages.
Example:
cupt safe-upgrade -o cupt::resolver::synchronize-by-source-versions=hard
The hard
value means that all changed packages must be synchronized, e.g.
consider the synchronization an additional hard dependency. The soft
value
means that all unsynchronized changed packages will have a penalty of
cupt::resolver::score::failed-synchronization
, e.g. consider the
synchronization as additional soft dependency.
Example:
Suppose we have libfoo1
and foo
binary packages which came from the same
source package. We have libfoo1 1.2-1
and foo 1.2-1
installed.
Situation 1: libfoo1
has new 1.3-1
version and foo has new 1.3-1
version.
Situation 2: libfoo1
has new 1.3-1
version and foo has new 1.3-2
version.
We do:
cupt install foo
What would be done by resolver if we have:
foo
, leave libfoo1
as of installed version
Situation 2: install new foo
, leave libfoo1
as of installed version
foo
and libfoo1
Situation 2: install new foo
, leave libfoo1
as of installed version
foo
and libfoo1
Situation 2: give up with an error tree, (assuming foo
depends on
libfoo1
, if it does not, then install new foo
, remove libfoo1
)
Cupt's native dependency problem resolver plans system changes, if needed, to make installed packages set correct after making the changes user demand.
In the most cases, there are several solutions to a problem. To choose amongst them, resolver assign scores to all of them.
Score is an integer (positive or negative) and is a sum of version weight
difference and an action modifier. Version weight, or "normalized version
priority", is a version pin value minus a default pin for a preferred versions.
Action modifiers are action type-specific addendums and are controlled by the
option group cupt::resolver::score::
X (see the full list of them in
cupt.conf(5)).
For native resolver, the negative scores indicate "negative" changes, and positive scores indicate "positive" changes. When several alternative solutions for a problem are available, they are considered in the score descending order. The ultimate goal of score system to assign positive scores to everything user wants and negative scores to everything user doesn't want. But since "positive" and "negative" is something that varies from user to user and from action to action, there is no (and cannot be) a silver bullet.
So, how can you adjust solution scores? From the definition of the score (above) you may adjust version pinning and/or set resolver score variables to different values.
Examples:
$ echo 'q' | cupt -s -t experimental full-upgrade --summary-only | grep "^ " W: some solutions were dropped, you may want to increase the value of the 'cupt::resolver::max-solution-count' option 0 manually installed and 48 automatically installed packages will be installed 129 manually installed and 474 automatically installed packages will be upgraded 0 manually installed and 32 automatically installed packages will be removed 2 manually installed and 17 automatically installed packages will have a not preferred version $ echo 'q' | cupt -s -t experimental full-upgrade --summary-only -o cupt::resolver::score::unsatisfied-recommends=250 | grep "^ " W: some solutions were dropped, you may want to increase the value of the 'cupt::resolver::max-solution-count' option 0 manually installed and 43 automatically installed packages will be installed 129 manually installed and 473 automatically installed packages will be upgraded 0 manually installed and 34 automatically installed packages will be removed 2 manually installed and 14 automatically installed packages will have a not preferred version 4 dependency problems will stay unresolved $ echo 'q' | cupt -s -t experimental full-upgrade --summary-only -o cupt::resolver::score::new=-1000 | grep "^ " W: some solutions were dropped, you may want to increase the value of the 'cupt::resolver::max-solution-count' option 0 manually installed and 30 automatically installed packages will be installed 124 manually installed and 429 automatically installed packages will be upgraded 3 manually installed and 70 automatically installed packages will be removed 9 manually installed and 14 automatically installed packages will have a not preferred version 7 dependency problems will stay unresolved $ echo 'q' | cupt -s -t experimental full-upgrade --summary-only -o cupt::resolver::score::new=-1000 -o cupt::resolver::score::downgrade=0 | grep "^ " W: some solutions were dropped, you may want to increase the value of the 'cupt::resolver::max-solution-count' option 0 manually installed and 18 automatically installed packages will be installed 119 manually installed and 464 automatically installed packages will be upgraded 1 manually installed and 20 automatically installed packages will be removed 14 manually installed and 37 automatically installed packages will have a not preferred version 4 dependency problems will stay unresolved
When an amount of available solutions is big, you may see the following message while resolver is operating:
W: some solutions were dropped, you may want to increase the value of the 'cupt::resolver::max-solution-count' option
Cupt's native resolver may have only limited amount of different solutions in
the memory, and this amount is determined by the value of the
cupt::resolver::max-solution-count
option. The default value is enough for
requests of small and medium complexity, but may be not enough for request of
high complexity. So, for systems where there is enough free RAM, consider
increasing the value to values like 4000 or even 16000.
There are several types of debug information available, the debug output is
turned on by setting some debug::
type option to yes
. All debug output
lines is prepended with D:
and are sent to standard error.
debug::resolver
.
debug::worker
.
debug::downloader
.
debug::gpgv
.
debug::logger
.
An example: you want to see a very detailed resolver information regarding your query:
cupt install exim4 -o debug::resolver=yes 2>resolver.debug.log
A debug information will be put to a file resolver.debug.log
.