diff --git a/flake.nix b/flake.nix
index a46b3de..9181478 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,6 +1,17 @@
 {
   description = "tacocat's nix configuration";
 
+  nixConfig = {
+    experimental-features = ["nix-command" "flakes"];
+    extra-substituters = [
+      # Nix community's cache server
+      "https://nix-community.cachix.org"
+    ];
+    extra-trusted-public-keys = [
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    ];
+  };
+
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     helix = {
diff --git a/users/tacocat/helix/languages.nix b/users/tacocat/helix/languages.nix
index 1d38529..3efd00b 100644
--- a/users/tacocat/helix/languages.nix
+++ b/users/tacocat/helix/languages.nix
@@ -15,14 +15,19 @@
       # }
 
       {
-        name = "latex";
-        indent.tab-width = 2;
-        indent.unit = "\t";
+        name = "java";
+        language-servers = ["java-language-server"];
       }
 
       {
-        name = "java";
-        language-servers = ["java-language-server"];
+        name = "nix";
+        auto-format = true;
+      }
+
+      {
+        name = "latex";
+        indent.tab-width = 2;
+        indent.unit = "\t";
       }
     ];
     language-server = {
diff --git a/users/tacocat/shell/default.nix b/users/tacocat/shell/default.nix
index 9e413b5..8a07890 100644
--- a/users/tacocat/shell/default.nix
+++ b/users/tacocat/shell/default.nix
@@ -6,7 +6,7 @@
 
   programs.starship = {
     enable = true;
-    enableBashIntegration = true;
+    # enableBashIntegration = true;
     enableZshIntegration = true;
     settings = {
       add_newline = false;