Add instructions for installing contributed packages

developer/general/package-contributions.md

@@ -7,6 +7,9 @@ permalink: /doc/package-contributions/
 Package Contributions
 =====================
 
+_This page is for developers who wish to contribute packages.
+If you want to install contributed packages, please see [installing contributed packages]._
+
 We're very grateful to the talented and hard-working community members who contribute software packages to Qubes OS.
 This page explains the inclusion criteria and procedures for such packages, as well as the roles and responsibilities of those involved.
 
@@ -94,6 +97,7 @@ If you do not wish to be the maintainer of your package, please let us know.
 If you do not act on your maintainer duties for a given package for an extended period of time and after at least one reminder, we will assume that you no longer wish to be the maintainer for that package.
 
 
+[installing contributed packages]: /doc/installing-contributed-packages/
 [Inclusion Criteria]: #inclusion-criteria
 [Contribution Procedure]: #contribution-procedure
 [Update Procedure]: #update-procedure

user/advanced-configuration/installing-contributed-packages.md

@@ -0,0 +1,33 @@
+---
+layout: doc
+title: Installing contributed packages
+permalink: /doc/installing-contributed-packages/
+---
+
+# Installing contributed packages
+
+_This page is for users who wish to install contributed packages.
+If you want to contribute a package, please see [package contributions]._
+
+
+Qubes OS contributed packages are available under the [QubesOS-contrib] GitHub Project.
+This is a place where our community can [contribute Qubes OS related packages, additions and various customizations][package contributions].
+
+If you want to install one of these packages, first you need to enable the repository in your system (dom0 and/or templates). This can be done by installing the `qubes-repo-contrib` package. This package includes the repository definition and keys necessary to download, verify, and install [QubesOS-contrib] packages.
+
+In dom0, use `qubes-dom0-update`:
+
+    sudo qubes-dom0-update qubes-repo-contrib
+
+In a Fedora-based template, use `dnf`:
+
+    sudo dnf install qubes-repo-contrib
+
+In a Debian-based template, use `apt`:
+
+    sudo apt update && sudo apt install qubes-repo-contrib
+
+
+[package contributions]: /doc/package-contributions/
+[QubesOS-contrib]: https://github.com/QubesOS-contrib/
+

user/common-tasks/software-update-dom0.md

@@ -122,6 +122,10 @@ sudo qubes-dom0-update --enablerepo=qubes-dom0-unstable
 To enable or disable any of these repos permanently, change the corresponding `enabled` value to `1` in
 `/etc/yum.repos.d/qubes-dom0.repo`.
 
+## Contributed package repository
+
+Please see [installing contributed packages].
+
 ## Kernel upgrade
 
 This section describes upgrading the kernel in dom0 and domUs.
@@ -219,4 +223,5 @@ For example: sys-whonix.
 [testing]: /doc/testing/
 [troubleshooting newer hardware]: /doc/newer-hardware-troubleshooting/
 [Managing VM kernel]: /doc/managing-vm-kernel/
+[installing contributed packages]: /doc/installing-contributed-packages/
 

user/common-tasks/software-update-domu.md

@@ -43,6 +43,9 @@ Advanced users can execute the standard update command for that operating system
 
 If you wish to install updates that are still in [testing], you must enable the appropriate testing repositories.
 
+## Contributed package repository
+
+Please see [installing contributed packages].
 
 ### Fedora
 
@@ -314,4 +317,5 @@ Note that the app will autostart only when the AppVM starts. If you would like t
 [RPM Fusion]: http://rpmfusion.org/
 [service framework]: /doc/qubes-service/
 [How to Reinstall a TemplateVM]: /doc/reinstall-template/
+[installing contributed packages]: /doc/installing-contributed-packages/