Downgrading packages

2023-09-14T20:11:20Z

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{{warning|Downgrading packages will almost always leave you in an unsupported partial upgrade state. These instructions are intended for advanced users who understand the consequences of downgrading packages}}

=Introduction= 


There are sometimes circumstances that require downgrading a package temporarily. While this should not be an issue for Manjaro users on the stable branch, it is sometimes needed when using the unstable branch.

=The easy way using Manjaro Downgrade= 


'''manjaro-downgrade''' is an application that helps automate the process of locating and downgrading packages.

==Installing Manjaro Downgrade== 


First you need to install Manjaro Downgrade, which is available in the official repositories of Manjaro. This can be done with the following command:


pamac install manjaro-downgrade

==Using Manjaro Downgrade== 


To use '''manjaro-downgrade''' simply run the command followed by the name of the package you want to downgrade. For example:


manjaro-downgrade firefox


This will result in output which looks like this:


Available packages:
1) firefox 55.0.3 1 x86_64 (remote)
2) firefox 60.0.1 1 x86_64 (remote)
3) firefox 64.0.2 1 x86_64 (remote)
4) firefox 64.0.2 1 x86_64 (local)
5) firefox 65.0 1 x86_64 (remote)
6) firefox 65.0 2 x86_64 (remote)
7) firefox 65.0.1 1 x86_64 (remote)
8) firefox 65.0.2 1 x86_64 (remote)
- 9) firefox 66.0 0 x86_64 (local)
10) firefox 66.0 1 x86_64 (remote)
11) firefox 66.0.1 1 x86_64 (remote)
12) firefox 66.0.2 1 x86_64 (remote)
13) firefox 66.0.3 1 x86_64 (remote)
14) firefox 66.0.4 1 x86_64 (remote)
+ 15) firefox 66.0.5 1 x86_64 (remote)
+ 16) firefox 66.0.5 1 x86_64 (local)


The entries listed as "local" are versions from your local package cache. The entries identified as "remote" are available from the Arch Linux Archive(ALA).


{{warning|Installing packages from the ALA is inherently dangerous as sometimes Manjaro needs custom versions of certain packages. Doing this can result in a broken system. As a result, downgrading from the ALA is disabled by default on the stable branch. If needed, you can enable it by setting the environment variable <pre>DOWNGRADE_FROM_ALA=1</pre>}}

==Adding packages to the ignore list== 


After downgrading the package, you should see a message similar to this:
add firefox to IgnorePkg? [y/n]


If you answer "y", the package will no long be upgraded in future updates until you manually remove it from the '''IgnorePkg''' line of '''/etc/pacman.conf'''

=Downgrading packages manually= 


The directory {{ic|/var/cache/pacman/pkg}} contains old versions of packages. First look for the package that you wish to downgrade is this directory then use {{ic|pacman -U}} to install it. For example, it could look like this:


We have to use the following command to install the previously installed version of the packages that need to be downgraded:


sudo pacman -U /var/cache/pacman/pkg/firefox-64.0.2-1-x86_64.pkg.tar.xz

==Ensuring downgraded packages won't be upgraded again== 


In order to stop these packages from being upgraded the next time you run updates, you can add them to the ignore list in '''/etc/pacman.conf'''. Look for the section that looks like this:
# Pacman won't upgrade packages listed in IgnorePkg and members of IgnoreGroup
# IgnorePkg =


Remove the comment in front of '''IgnorePkg''' and add the package name to the list. When you are done it should look like this:
# Pacman won't upgrade packages listed in IgnorePkg and members of IgnoreGroup
IgnorePkg = firefox


Once this is done the package will no long be upgraded in future updates until you manually remove it from the '''IgnorePkg''' line of '''/etc/pacman.conf'''
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Downgrading packages