add nushell

hosts/othalan/default.nix

@@ -11,10 +11,11 @@
     backups = enabled;
     languages = [
       "misc"
-      "python"
       "nim"
-      "tex"
       "node"
+      "nushell"
+      "python"
+      "tex"
       "zig"
     ];
   };

modules/languages/default.nix

@@ -9,11 +9,12 @@ let
 in
 {
   imports = [
-    ./nim.nix
-    ./tex.nix
     ./misc.nix
+    ./nim.nix
     ./node.nix
+    ./nushell.nix
     ./python.nix
+    ./tex.nix
     ./zig.nix
   ];
   options.oizys.languages = mkOption {

modules/languages/nushell.nix

@@ -0,0 +1,18 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  inherit (lib) mkIfIn;
+  cfg = config.oizys.languages;
+in
+{
+  config = mkIfIn "nushell" cfg {
+    environment.systemPackages = with pkgs; [
+      nushell
+      nushellPlugins.polars
+    ];
+  };
+}