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linux/package managers: arch ignore packages

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wiki/linux/package_manager.md
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@ -19,22 +19,36 @@ It features the same syntax.
This section addresses various usages of the arch linux package managers.
#### Downgrading Packages
#### Ignoring Packages
Packages can be ignored by adding the package in `/etc/pacman.conf` under `IgnorePkg`.
In the following example `waybar` is ignored from updates.
To add more packages just add them separated by spaces.
```txt
IgnorePkg = waybar
```
To unignore the package from updates remove it from this line.
#### Downgrading Packages
Packages of the AUR can be downgraded by using the
[Downgrade](https://github.com/archlinux-downgrade/downgrade) program.
This program can then easily be used to an AUR package.
This works like the following assuming the package `v4l2loopback-dmks` needs to be downgraded.
```sh
```sh
sudo downgrade v4l2loopback-dmks
```
Afterwards the target version can be selected and the downgrading process will conclude.
After the downgrade of a package you will get asked if you want to
[ignore future updates](#ignoring-packages).
#### Manual Installation of a `PKGBUILD` File
A `PKGBUILD` file is a [shell](/wiki/linux/shell.md) script that contains the installation
A `PKGBUILD` file is a [shell](/wiki/linux/shell.md) script that contains the installation
information that is required by the Arch Linux.
Using the `makepkg` command it can be installed like the following command shows.
@ -80,7 +94,7 @@ paccache -rvuk0
Since `yay` mirrors the usage of `pacman` it can be used the same way and will clean both caches.
```sh
```sh
yay -Sc
```