Add zsh-autocomplete

modules/core/user.nix

@@ -9,6 +9,7 @@
 }:
 let
   shellCfg = config.modules.shell;
+  zshCfg = config.modules.zsh;
 in
 {
   imports = [ inputs.home-manager.nixosModules.home-manager ];
@@ -52,5 +53,10 @@ in
   # Set /etc/shells so GDM will show our user when ZSH is selected
   environment.shells = [ pkgs.${shellCfg.defaultShell} ];
 
+  # Needed to get completion for system packages (e.g. systemd)
+  environment.pathsToLink =
+    [ ]
+    ++ (if zshCfg.enable then [ "/share/zsh" ] else [ ]);
+
   nix.settings.allowed-users = [ "${username}" ];
 }

modules/home/zsh/completion.nix

@@ -0,0 +1,18 @@
+{
+  config,
+  lib,
+  osConfig,
+  ...
+}:
+with lib;
+let
+  cfg = osConfig.modules.zsh;
+  xdgCfg = config.xdg;
+in
+{
+  config = mkIf cfg.enable {
+    home.file."${xdgCfg.configHome}/zsh/completion.zsh" = {
+      source = ./completion.zsh;
+    };
+  };
+}

modules/home/zsh/completion.zsh

@@ -0,0 +1,20 @@
+# Work with hidden files
+_comp_options+=(globdots)
+
+# Autocomplete cache options
+zstyle ':completion:*' use-cache on
+zstyle ':completion:*' cache-path "$XDG_CACHE_HOME/zsh/.zcompcache"
+
+# Colors
+zstyle ':completion:*:default' list-colors ${(s.:.)LS_COLORS}
+# Menu options
+zstyle ':completion:*' menu select
+zstyle ':completion:*:*:*:*:descriptions' format '%F{green}-- %d --%f'
+zstyle ':completion:*:*:*:*:corrections' format '%F{yellow}!- %d (errors: %e) -!%f'
+zstyle ':completion:*:messages' format ' %F{purple} -- %d --%f'
+zstyle ':completion:*:warnings' format ' %F{red}-- no matches found --%f'
+# Group results
+zstyle ':completion:*' group-name ''
+
+# Autocomplete options
+zstyle ':completion:*' completer _extensions _complete _approximate

modules/home/zsh/default.nix

@@ -12,6 +12,7 @@ let
 in
 {
   imports = [
+    ./completion.nix
     ./p10k.nix
   ];
 
@@ -19,7 +20,7 @@ in
     enable = cfg.enable;
     dotDir = "${xdgCfg.configHome}/zsh";
     autosuggestion.enable = false;
-    enableCompletion = true;
+    enableCompletion = false;
     syntaxHighlighting = {
       enable = true;
       highlighters = [
@@ -53,14 +54,19 @@ in
         source "${xdgCfg.configHome}/zsh/p10k.zsh";
       '';
       zshConfig = mkOrder 1000 ''
+        # Autocompletion and menu styling
+        zmodload zsh/complist
+        autoload -Uz compinit && compinit
+        source "${xdgCfg.configHome}/zsh/completion.zsh";
+
         # vi keybindings for menu select
-      #bindkey -M menuselect 'h' vi-backward-char
+        bindkey -M menuselect 'h' vi-backward-char
-      #bindkey -M menuselect 'k' vi-up-line-or-history
+        bindkey -M menuselect 'k' vi-up-line-or-history
-      #bindkey -M menuselect 'j' vi-down-line-or-history
+        bindkey -M menuselect 'j' vi-down-line-or-history
-      #bindkey -M menuselect 'l' vi-forward-char
+        bindkey -M menuselect 'l' vi-forward-char
 
         # Tab to accept current selection
-      #bindkey -M menuselect '^I' accept-and-infer-next-history
+        bindkey -M menuselect '^I' accept-and-infer-next-history
 
         # Control arrow keys
         bindkey '^[[1;5C' forward-word
@@ -85,6 +91,11 @@ in
         src = "${pkgs.zsh-powerlevel10k}/share/zsh-powerlevel10k/";
         file = "powerlevel10k.zsh-theme";
       }
+      {
+        name = "zsh-autocomplete";
+        src = "${pkgs.zsh-autocomplete}/share/zsh-autocomplete/";
+        file  = "zsh-autocomplete.zsh";
+      }
     ];
   };
 }