Initialize system during installation

scripts/Arch/OS/install.fish

@@ -2,6 +2,11 @@
 begin
     set -l dir (status dirname)
 
+    function installValhallaDeps -V dir
+        source "$dir/../Scripts/software.fish"
+        and pacinst fish git jq nix sudo tmux
+    end
+
     function getDeploymentScript -V dir
         echo "$dir/../Scripts/deploy.fish"
     end

scripts/Common/OS/install.fish

@@ -5,13 +5,32 @@ source "$dir/../Scripts/config.fish"
 source "$dir/../Scripts/hooks.fish"
 
 if [ (id -u) -eq 0 ]
-    set -l name (getOSConfig setupUser.name)
+    set -l nixVersion nixos-24.05
     set -l sudoConfig "/etc/sudoers.d/PortValhalla"
+    set -l channelDir /nix/var/nix/profiles/per-user/root/channels/nixpkgs
     rm ~/.bash_profile
 
+    if ! git status -C (status dirname) &> /dev/null
+        git config --system --add safe.directory (realpath "$(status dirname)/../../..")
+    end
+
     if [ -z "$TMUX" ]
-        tmux new-session $cmdline
+        if [ -z "$CONFIG_NAME" ]
+            selectProfile config
+            and set -x CONFIG_NAME "$config"
+        end
+
+        if [ ! -d "$channelDir" ]
+            mkdir -p "$channelDir"
+            and git clone https://github.com/NixOS/nixpkgs.git --depth=1 -b "$nixVersion" "$channelDir"
+            and rm -rf "$channelDir/.git"
+        end
+
+        and runHook --force installValhallaDeps 'Please set up a function `installValhallaDeps` for installing `fish`, `git`, `jq`, `nix`, `sudo` and `tmux`.'
+        and tmux new-session $cmdline
     else
+        set -l name (getOSConfig setupUser.name)
+
         begin
             echo "Creating setup user"