nushell: allow multi-word aliases

Also fix invalid alias in test

modules/programs/nushell.nix

@@ -164,7 +164,10 @@ in {
     shellAliases = lib.mkOption {
       type = types.attrsOf types.str;
       default = { };
-      example = { ll = "ls -l"; };
+      example = {
+        ll = "ls -l";
+        g = "git";
+      };
       description = ''
         An attribute set that maps aliases (the top level attribute names in
         this option) to command strings or directly to build outputs.
@@ -202,7 +205,8 @@ in {
           || aliasesStr != "" || cfg.settings != { };
 
         aliasesStr = lib.concatLines
-          (lib.mapAttrsToList (k: v: "alias ${k} = ${v}") cfg.shellAliases);
+          (lib.mapAttrsToList (k: v: "alias ${toNushell { } k} = ${v}")
+            cfg.shellAliases);
       in lib.mkIf writeConfig {
         "${configDir}/config.nu".text = lib.mkMerge [
           (let

tests/modules/programs/nushell/config-expected.nu

@@ -26,5 +26,6 @@ let config = {
 }
 
 
-alias ll = ls -a
+alias "ll" = ls -a
-alias lsname = (ls | get name)
+alias "multi word alias" = cd -
+alias "z" = __zoxide_z

tests/modules/programs/nushell/example-settings.nix

@@ -26,8 +26,9 @@
     plugins = [ pkgs.nushellPlugins.formats ];
 
     shellAliases = {
-      "lsname" = "(ls | get name)";
       "ll" = "ls -a";
+      "multi word alias" = "cd -";
+      "z" = "__zoxide_z";
     };
 
     settings = {