Update Debian install instructions

docs/requirements.txt

@@ -1,6 +1,7 @@
 docutils>=0.17.1
 pygments>=2.7
 sphinx-book-theme
+sphinx-copybutton
 sphinx-design
 sphinx-favicon
 sphinx-intl

docs/source/conf.py

@@ -40,7 +40,7 @@ os.environ["TZ"] = "Europe/Oslo"
 time.tzset()
 
 needs_sphinx = "5.0"
-extensions = ["sphinx_design"]
+extensions = ["sphinx_design", "sphinx_copybutton"]
 templates_path = ["_templates"]
 source_suffix = ".rst"
 master_doc = "index"

docs/source/int_overview.rst

@@ -13,7 +13,7 @@ structure of your text. It collects a lot of information from your text and uses
 structure of it in various ways to help you get an overview of your writing.
 
 The chapters labelled "Recommended Reading" includes additional information on how the different
-parts if the application work and what the features do. 
+parts of the application work and what the features do. 
 
 The "Optional" and "Lookup" chapters contain additional information or lookup tables that are not
 essential for using the application.

docs/source/int_started.rst

@@ -72,28 +72,103 @@ Debian and Mint
 
 Since this is a pure Python package, the Launchpad PPA can in principle also be used on Debian or
 Mint. However, the above command will fail to add the signing key, as it is Ubuntu-specific.
+Instead, do one of the following:
 
-Instead, run the following commands to add the repository and key:
+.. tab-set::
 
-.. code-block:: bash
+   .. tab-item:: Debian 13 (Trixie) and Later
+      :selected:
 
-   sudo gpg --no-default-keyring --keyring /usr/share/keyrings/novelwriter-ppa-keyring.gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys F19F1FCE50043114
-   echo "deb [signed-by=/usr/share/keyrings/novelwriter-ppa-keyring.gpg] http://ppa.launchpad.net/vkbo/novelwriter/ubuntu noble main" | sudo tee /etc/apt/sources.list.d/novelwriter.list
+      As of Debian 13 (Trixie) and other Debian derivatives, the keyring format has changed.
+      The following instructions use Sequoia to install the key in the correct format, and sets up
+      the source file in the new format.
+
+      If you don't have Sequoia installed, first run:
+
+      .. code-block:: bash
+
+         sudo apt install sq
+
+      Import the keyring:
+
+      .. code-block:: bash
+
+         sudo sq network keyserver --server hkps://keyserver.ubuntu.com search "F19F1FCE50043114" \
+               --output /usr/share/keyrings/novelwriter-ppa-keyring.gpg --overwrite
+
+      Add the source file:
+
+      .. tab-set::
+
+         .. tab-item:: Releases
+            :selected:
+
+            .. code-block:: bash
+
+               sudo sh -c "cat > /etc/apt/sources.list.d/novelwriter.sources" << EOF
+               Types: deb
+               URIs: http://ppa.launchpad.net/vkbo/novelwriter/ubuntu/
+               Suites: noble
+               Components: main
+               Signed-By: /usr/share/keyrings/novelwriter-ppa-keyring.gpg
+               EOF
+
+         .. tab-item:: Pre-Releases
+
+            .. code-block:: bash
+
+               sudo sh -c "cat > /etc/apt/sources.list.d/novelwriter-pre.sources" << EOF
+               Types: deb
+               URIs: http://ppa.launchpad.net/vkbo/novelwriter-pre/ubuntu/
+               Suites: noble
+               Components: main
+               Signed-By: /usr/share/keyrings/novelwriter-ppa-keyring.gpg
+               EOF
+
+   .. tab-item:: Debian 12 (Bookworm) and Earlier
+
+      For Debian 12 (Bookworm) and older, and equivalent derivatives, use the old keyring format
+      and apt sources list file format.
+
+      Import the keyring:
+
+      .. code-block:: bash
+
+         sudo gpg --no-default-keyring --keyring /usr/share/keyrings/novelwriter-ppa-keyring.gpg \
+                  --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys F19F1FCE50043114
+
+      Add the source list:
+
+      .. tab-set::
+
+         .. tab-item:: Releases
+            :selected:
+
+            .. code-block:: bash
+
+               echo "deb [signed-by=/usr/share/keyrings/novelwriter-ppa-keyring.gpg] http://ppa.launchpad.net/vkbo/novelwriter/ubuntu noble main" | sudo tee /etc/apt/sources.list.d/novelwriter.list
+
+         .. tab-item:: Pre-Releases
+
+            .. code-block:: bash
+
+               echo "deb [signed-by=/usr/share/keyrings/novelwriter-ppa-keyring.gpg] http://ppa.launchpad.net/vkbo/novelwriter-pre/ubuntu noble main" | sudo tee /etc/apt/sources.list.d/novelwriter-pre.list
+
+      .. tip::
+         If you get an error message like ``gpg: failed to create temporary file`` when importing the key
+         from the Ubuntu keyserver, try creating the folder it fails on, and import the key again:
+
+         .. code-block:: bash
+
+            sudo mkdir -m 700 /root/.gnupg/
+
+**Install novelWriter**
 
 Then run the update and install commands as for Ubuntu:
 
 .. code-block:: bash
 
-   sudo apt update
-   sudo apt install novelwriter
-
-.. tip::
-   If you get an error message like ``gpg: failed to create temporary file`` when importing the key
-   from the Ubuntu keyserver, try creating the folder it fails on, and import the key again:
-
-   .. code-block:: bash
-
-      sudo mkdir /root/.gnupg/
+   sudo apt update && sudo apt install novelwriter
 
 
 AppImage Releases

docs/source/usage_breakdown.rst

@@ -194,7 +194,7 @@ within those documents.
 The four heading levels, **Level 1** to **Level 4**, are treated as follows:
 
 * **Level 1** is used for the novel title, and for partitions.
-* **Level 2** is used for chapter tiles.
+* **Level 2** is used for chapter titles.
 * **Level 3** is used for scene titles -- optionally replaced by separators.
 * **Level 4** is for section titles within scenes, if such granularity is needed.