mise: enable nushell integration (#6363)

modules/programs/mise.nix

@@ -21,6 +21,7 @@ in {
     "enableBashIntegration"
     "enableZshIntegration"
     "enableFishIntegration"
+    "enableNushellIntegration"
     "settings"
   ];
 
@@ -39,6 +40,9 @@ in {
       enableZshIntegration =
         lib.hm.shell.mkZshIntegrationOption { inherit config; };
 
+      enableNushellIntegration =
+        lib.hm.shell.mkNushellIntegrationOption { inherit config; };
+
       globalConfig = mkOption {
         type = tomlFormat.type;
         default = { };
@@ -103,6 +107,16 @@ in {
       fish.interactiveShellInit = mkIf cfg.enableFishIntegration ''
         ${getExe cfg.package} activate fish | source
       '';
+
+      nushell = mkIf cfg.enableNushellIntegration {
+        extraEnv = ''
+          let mise_path = $nu.default-config-dir | path join mise.nu
+          ^mise activate nu | save $mise_path --force
+        '';
+        extraConfig = ''
+          use ($nu.default-config-dir | path join mise.nu)
+        '';
+      };
     };
   };
 }

tests/modules/programs/mise/default.nix

@@ -4,4 +4,5 @@
   mise-bash-integration = ./bash-integration.nix;
   mise-zsh-integration = ./zsh-integration.nix;
   mise-fish-integration = ./fish-integration.nix;
+  mise-nushell-integration = ./nushell-integration.nix;
 }

tests/modules/programs/mise/nushell-integration.nix

@@ -0,0 +1,21 @@
+{ config, ... }: {
+  programs = {
+    mise = {
+      package = config.lib.test.mkStubPackage { name = "mise"; };
+      enable = true;
+      enableNushellIntegration = true;
+    };
+
+    nushell.enable = true;
+  };
+
+  nmt.script = ''
+    assertFileContains home-files/.config/nushell/env.nu \
+      '
+      let mise_path = $nu.default-config-dir | path join mise.nu
+      ^mise activate nu | save $mise_path --force
+      '
+    assertFileContains home-files/.config/nushell/config.nu \
+      'use ($nu.default-config-dir | path join mise.nu)'
+  '';
+}