add nushell

modules/home/nushell.nix

@@ -0,0 +1,37 @@
+{ ... }: {
+  programs = {
+    nushell = {
+      enable = true;
+      configFile.source = ../../shell/config.nu;
+      shellAliases = { vi = "nvim"; };
+      extraConfig = ''
+        let carapace_completer = {|spans|
+        carapace $spans.0 nushell ...$spans | from json
+        }
+        $env.config = {
+         show_banner: false,
+         completions: {
+         case_sensitive: false # case-sensitive completions
+         quick: true    # set to false to prevent auto-selecting completions
+         partial: true    # set to false to prevent partial filling of the prompt
+         algorithm: "fuzzy"    # prefix or fuzzy
+         external: {
+         # set to false to prevent nushell looking into $env.PATH to find more suggestions
+             enable: true 
+         # set to lower can improve completion performance at the cost of omitting some options
+             max_results: 100 
+             completer: $carapace_completer # check 'carapace_completer' 
+           }
+         }
+        } 
+        $env.PATH = ($env.PATH | 
+        split row (char esep) |
+        prepend /home/myuser/.apps |
+        append /usr/bin/env
+        )
+      '';
+    };
+    carapace.enable = true;
+    carapace.enableNushellIntegration = true;
+  };
+}