Tips-&-Tricks.md

@@ -287,6 +287,47 @@ Click `Updates` tab within the PureOS Store (and per [this issue](https://source
 Flatpak support and PureOS store integration are installed by default. Only need to add the Flathub repository via the terminal as described in their setup description [step 3](https://flatpak.org/setup/Debian/) For example:\
 `flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo`
 
+#### Customize Flatpak Installation Location
+
+Source: <https://docs.flatpak.org/en/latest/tips-and-tricks.html#adding-a-custom-installation>
+
+> By default Flatpak installs apps system-wide, and can also be made to install per-user with the --user option accepted by most commands. A third option is to set up a custom installation, which could be stored on an external hard drive.
+>
+> First ensure that the config directory exists:
+>
+> ```sh
+> $ sudo mkdir -p /etc/flatpak/installations.d
+> ```
+>
+> Then open a file in that directory as root:
+>
+> ```sh
+> $ sudoedit /etc/flatpak/installations.d/extra.conf
+> ```
+>
+> And write something like this:
+>
+> ```ini
+> [Installation "extra"]
+> Path=/media/purism/mysdcard/flatpak/
+> DisplayName=Extra Installation
+> StorageType=sdcard
+> ```
+>
+> [...] Replace the path with the actual path you want to use.
+>
+> Then you can add a remote using a command like:
+>
+> ```sh
+> $ flatpak --installation=extra remote-add flathub https://flathub.org/repo/flathub.flatpakrepo
+> ```
+>
+> And install to it with:
+>
+> ```sh
+> $ flatpak --installation=extra install flathub org.inkscape.Inkscape
+> ```
+
 ### Add App to favorites:
 
 To add an app from your app list to the Favorites section (i.e. pin to the top of the list), long-press on the app, then select `Add to Favorites`. The Favorites section expands to accommodate the new favorite app. To remove an app from Favorites, long-press the app, then select `Remove from Favorites`.