Added initial post and graphical sections for gentoo

docs/gentoo-desktop-setup/graphical-session/session-manager.md

@@ -0,0 +1,21 @@
+Session management is necessary for tracking and giving rights to certain users. For a functional setup install both `elogind` and `turnstile` and enable their corresponding services.
+
+``` shell-session
+root@host:~# emerge -av elogind turnstile
+root@host:~# rc-update add elogind boot
+root@host:~# rc-update add turnstiled dbus
+```
+
+Then configure `pam` to allow them to track the user:
+
+``` shell title="/etc/pam.d/system-login"
+...
+session optional    pam_elogind.so
+session optional    pam_turnstile.so
+```
+
+When a user logs in it should now be able to start a graphical session. This should be done with:
+
+``` shell-session
+user@host:~$ dbus-run-session -- <window_manager>
+```

docs/gentoo-desktop-setup/graphical-session/window-manager.md

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+River is a wayland tiling window manager which is configured only using its `riverctl` interface. It is rather minimal but still remains functional. River is coded using Zig but this is by default masked on Gentoo so first unmask them:
+
+``` title="/etc/portage/package.accept_keywords/zig"
+dev-lang/zig ~amd64
+app-eselect/eselect-zig ~amd64
+```
+
+Then emerge `river` like normal.
+
+``` shell-session
+root@host:~# emerge -av river
+```

docs/gentoo-desktop-setup/post-install/ccache.md

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+`ccache` is a program which save compiling cache speeding up recompile's of big software. First install it:
+
+```
+root@host:~# emerge -av dev-util/ccache
+```
+
+And create a configuration file for `ccache`.
+
+``` title="/etc/ccache.conf"
+cache_dir = /var/cache/ccache
+
+max_size = 20G
+umask = 002
+hash_dir = false
+compiler_check = %compiler% -dumpversion
+
+compression = true
+compression_level = 1
+```
+
+Configure `portage` to allow `ccache` for specified packages:
+
+``` title="/etc/portage/env/enable-ccache.conf"
+FEATURES="ccache"
+CCACHE_DIR="/var/cache/ccache"
+```
+
+Then for every package with which you want to use `ccache` add them:
+
+``` title="/etc/portage/package.env/ccache"
+sys-kernel/gentoo-kernel enable-ccache.conf
+sys-kernel/firefox enable-ccache.conf
+...
+```
+

docs/gentoo-desktop-setup/post-install/drivers.md

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+Video drivers are necessary for a graphical session to function. In Gentoo it is as simple as specifying what video card the system uses using USE flags:
+
+``` title="/etc/portage/package.use/00video"
+*/* VIDEO_CARDS: -* <amdgpu radeonsi || intel || nvidia>
+```

docs/gentoo-desktop-setup/post-install/users.md

@@ -0,0 +1,32 @@
+Adding a user to the system is essential for actually using it as a desktop. It is pretty straight forward:
+
+``` shell-session
+root@host:~# useradd -m -G <wheel,>plugdev,pipewire -s /bin/bash <username>
+root@host:~# passwd <username>
+...
+passwd: password updated successfully
+```
+
+> The `pipewire` group will not exist yet until the corresponding package is installed.
+
+The `wheel` group should ideally only be assigned to one singular admin account. The users in the group are allowed to use the `doas` command to gain root privileges. This is necessary for installing packages and changing system files but not for a normal user.
+
+## Doas
+
+Installing and configuring `doas` should be done like so.
+
+``` title="/etc/portage/package.use/doas"
+app-admin/doas persist
+```
+
+> This USE flag is necessary when typing the user's password every few seconds gets to annoying.
+
+``` shell-session
+root@host:~# emerge -av doas
+```
+
+``` title="/etc/doas.conf"
+permit persist :wheel as root
+```
+
+Now users who are in the `wheel` group are allowed to use the `doas` command to gain root privileges.

mkdocs.yml

@@ -96,6 +96,14 @@ nav:
     -  gentoo-desktop-setup/index.md
     - 'Provisioning': gentoo-desktop-setup/provisioning.md
     - 'Installation': gentoo-desktop-setup/installation.md
+    - 'Post installation':
+      - 'Firmware and drivers': gentoo-desktop-setup/post-install/drivers.md
+      - 'Swap': gentoo-desktop-setup/post-install/swap.md
+      - 'Users': gentoo-desktop-setup/post-install/users.md
+    - 'Graphical session':
+      - 'Session manager': gentoo-desktop-setup/graphical-session/session-manager.md
+      - 'Login manager': gentoo-desktop-setup/graphical-session/login-manager.md
+      - 'Window manager': gentoo-desktop-setup/graphical-session/window-manager.md
 
   - 'Void-desktop setup':
     - void-desktop-setup/index.md