View source for Debian backports

= Debian backports =

== Trixie ==

=== Configuration ===

* /etc/apt/sources.list (remember to setup permissions 644)

<pre>
# Note: HTTP protocol has less overhead then FTP
# http://unix.stackexchange.com/a/30211

# stable
deb http://deb.debian.org/debian/ trixie main non-free-firmware contrib non-free
deb http://deb.debian.org/debian/ trixie-updates main non-free-firmware contrib non-free

# security
deb http://security.debian.org/debian-security trixie-security main non-free-firmware contrib non-free

# backport
deb http://deb.debian.org/debian trixie-backports main non-free-firmware contrib non-free

# unstable
#deb http://deb.debian.org/debian/ unstable main non-free-firmware contrib non-free
</pre>

* /etc/apt/preferences (remember to setup permissions 644)

<pre>
Package: *
Pin: release o=Debian, a=trixie
Pin-Priority: 900

Package: *
Pin: release o=Debian Backports
Pin-Priority: 200

#Package: *
#Pin: release o=Debian a=unstable
#Pin-Priority: 100
</pre>

* /etc/apt/apt.conf (remember to setup permissions 644)

<pre>
APT::Default-Release "trixie";
APT::Cache-Limit 1310851072;
</pre>

=== Install a backport package ===

* as a suggestion
<pre>
apt-get -t trixie-backports install <PACKAGE>
</pre>

* or as a requirement

<pre>
apt-get install <PACKAGE>/trixie-backports
</pre>

== Stretch ==

=== Configuration ===

* /etc/apt/sources.list (remember to setup permissions 644)

<pre>
# Note: HTTP protocol has less overhead then FTP
# http://unix.stackexchange.com/a/30211

# stable
deb http://ftp.debian.org/debian/ stretch main contrib non-free
deb http://ftp.debian.org/debian/ stretch-updates main contrib non-free
#deb-src http://ftp.debian.org/debian/ stretch main contrib non-free

# security
deb http://security.debian.org/ stretch/updates main contrib non-free
#deb-src http://security.debian.org/ stretch/updates main contrib non-free

# backport
deb http://ftp.debian.org/debian/ stretch-backports main contrib non-free

# unstable
#deb http://ftp.debian.org/debian/ unstable main contrib non-free
</pre>

* /etc/apt/preferences (remember to setup permissions 644)

<pre>
Package: *
Pin: release o=Debian, a=stretch
Pin-Priority: 900

Package: *
Pin: release o=Debian Backports
Pin-Priority: 200

#Package: *
#Pin: release o=Debian a=unstable
#Pin-Priority: 100

</pre>

* /etc/apt/apt.conf (remember to setup permissions 644)

<pre>
APT::Default-Release "stretch";
APT::Cache-Limit 1310851072;

</pre>

=== Install a backport package ===

* as a preference
<pre>
apt-get -t stretch-backports install <PACKAGE>
</pre>

* or as a requirement

<pre>
apt-get install <PACKAGE>/stretch-backports
</pre>

== Jessie ==

=== Configuration ===

* /etc/apt/sources.list

<pre>
# Note: HTTP protocol has less overhead then FTP
# http://unix.stackexchange.com/a/30211

# stable
deb http://ftp.debian.org/debian/ jessie main contrib non-free
deb http://ftp.debian.org/debian/ jessie-updates main contrib non-free
#deb-src http://ftp.debian.org/debian/ jessie main contrib non-free

# security
deb http://security.debian.org/ jessie/updates main contrib non-free
#deb-src http://security.debian.org/ jessie/updates main contrib non-free

# backport
deb http://ftp.debian.org/debian/ jessie-backports main contrib non-free

# unstable
#deb http://ftp.debian.org/debian/ unstable main contrib non-free
</pre>



* /etc/apt/preferences

<pre>
Package: *
Pin: release o=Debian, a=jessie
Pin-Priority: 900

Package: *
Pin: release o=Debian Backports
Pin-Priority: 200

#Package: *
#Pin: release o=Debian a=unstable
#Pin-Priority: 100

</pre>



* /etc/apt/apt.conf                              

<pre>
APT::Default-Release "jessie";
APT::Cache-Limit 1310851072;

</pre>

=== Install a backport package ===

<pre>
apt-get -t jessie-backports install <PACKAGE>
</pre>
or
<pre>
apt-get install <PACKAGE>/jessie-backports
</pre>

== Wheezy ==

=== Configuration ===

* /etc/apt/sources.list

<pre>
# stable
deb http://http.debian.net/debian/ wheezy main contrib non-free
deb http://http.debian.net/debian/ wheezy-updates main contrib non-free
#deb-src http://http.debian.net/debian/ wheezy main contrib non-free

# security
deb http://security.debian.org/ wheezy/updates main contrib non-free
#deb-src http://security.debian.org/ wheezy/updates main contrib non-free

# backport
deb http://http.debian.net/debian/ wheezy-backports main contrib non-free

# unstable
#deb http://http.debian.net/debian/ unstable main contrib non-free

</pre>



* /etc/apt/preferences

<pre>
Package: *
Pin: release o=Debian, a=wheezy
Pin-Priority: 900

Package: *
Pin: release o=Debian Backports
Pin-Priority: 200

#Package: *
#Pin: release o=Debian a=unstable
#Pin-Priority: 100

</pre>



* /etc/apt/apt.conf                              

<pre>
APT::Default-Release "wheezy";
APT::Cache-Limit 67108864;

</pre>

=== Install a backport package ===

<pre>
apt-get -t wheezy-backports install <PACKAGE>
</pre>
or
<pre>
apt-get install <PACKAGE>/wheezy-backports
</pre>

== Find packages other than stable ==

<pre>
apt-show-versions | grep -v /stable
</pre>

== Make your backports of a package ==

You can follow the instructions on [https://wiki.debian.org/SimpleBackportCreation SimpleBackportCreation] to make a backport of a package. To do that without change your local system, you can use chroot, docker or other container tools to install deps and prepare the package.

For instance, we can do a backport of Inter fonts from testing to stable following the instructions from the link above:

<pre>
[host]$ mkdir -p .volumes/mnt/shared
[host]$ docker run -it --rm --volume=$(pwd)/.volumes/mnt/shared:/mnt/shared debian:bullseye-slim /bin/bash
[docker]$ apt-get update
[docker]$ apt-get install packaging-dev debian-keyring devscripts equivs
[docker]$ rmadison fonts-inter
[docker]$ echo deb-src http://deb.debian.org/debian/ testing main >> /etc/apt/sources.list
[docker]$ apt-get update
[docker]$ apt-get source fonts-inter/testing
[docker]$ cd fonts-inter-3.19+ds/
[docker]$ mk-build-deps --install --remove
[docker]$ dch --bpo
[docker]$ fakeroot debian/rules binary
[docker]$ dpkg-buildpackage -b -us -uc
[docker]$ cd ..
[docker]$ mv *.deb mnt/shared/
[docker]$ exit
[host]$ cd mnt/shared/
[host]$ dpkg -i /mnt/shared/fonts-inter_3.19+ds-2_all.deb
[host]$ dpkg -L fonts-inter
</pre>

== References ==

* [https://wiki.debian.org/SourcesList Debian sources.list config]
* [http://backports-master.debian.org/Instructions/ Debian backports instructions]

[[Category:unix]]
[[Category:linux]]
[[Category:debian]]