feat: add nushell integration config

home-manager/stvnliu/shells/default.nix

@@ -10,6 +10,7 @@ in
     imports = [
       ./zsh.nix
       ./fish
+      ./nushell
       ./zoxide.nix
       ./direnv.nix
       ./starship
@@ -22,8 +23,9 @@ in
     config = {
       myShells = {
         zsh.enable = false;
-        fish.enable = true;
-        defaultShell = "fish";
+        fish.enable = false;
+        nushell.enable = true;
+        defaultShell = "${config.programs.nushell.package}/bin/nu";
         prompts.starship.enable = true;
       };
     };

home-manager/stvnliu/shells/direnv.nix

@@ -2,6 +2,7 @@
   programs = {
     direnv = {
       enable = true;
+      enableNushellIntegration = true;
       nix-direnv.enable = true;
     };
   };

home-manager/stvnliu/shells/nushell/default.nix

@@ -0,0 +1,26 @@
+{
+  pkgs,
+  config,
+  lib,
+  ...
+}: let
+  cfg = config.myShells.nushell;
+in
+  with lib; {
+    options = {
+      myShells.nushell = {enable = mkEnableOption "Enables nushell config";};
+    };
+    config = mkIf cfg.enable {
+      programs = {
+        nushell = {
+          enable = true;
+          configFile.source = ./init/config.nu;
+          shellAliases = import ../aliases/default.nix {inherit pkgs;};
+        };
+        carapace = {
+          enable = true;
+          enableNushellIntegration = true;
+        };
+      };
+    };
+  }

home-manager/stvnliu/shells/nushell/init/config.nu

@@ -0,0 +1,15 @@
+$env.config = {
+  show_banner: false,
+  hooks: {
+      pre_prompt: [{ ||
+        if (which direnv | is-empty) {
+          return
+        }
+
+        direnv export json | from json | default {} | load-env
+        if 'ENV_CONVERSIONS' in $env and 'PATH' in $env.ENV_CONVERSIONS {
+          $env.PATH = do $env.ENV_CONVERSIONS.PATH.from_string $env.PATH
+        }
+      }]
+    }
+}