diff --git a/flake.lock b/flake.lock
--- a/flake.lock
+++ b/flake.lock
@@ -44,11 +44,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1746171682,
-        "narHash": "sha256-EyXUNSa+H+YvGVuQJP1nZskXAowxKYp79RNUsNdQTj4=",
+        "lastModified": 1747020534,
+        "narHash": "sha256-D/6rkiC6w2p+4SwRiVKrWIeYzun8FBg7NlMKMwQMxO0=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "50eee705bbdbac942074a8c120e8194185633675",
+        "rev": "b4bbdc6fde16fc2051fcde232f6e288cd22007ca",
         "type": "github"
       },
       "original": {
@@ -60,11 +60,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1746422338,
-        "narHash": "sha256-NTtKOTLQv6dPfRe00OGSywg37A1FYqldS6xiNmqBUYc=",
+        "lastModified": 1746957726,
+        "narHash": "sha256-k9ut1LSfHCr0AW82ttEQzXVCqmyWVA5+SHJkS5ID/Jo=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "5b35d248e9206c1f3baf8de6a7683fee126364aa",
+        "rev": "a39ed32a651fdee6842ec930761e31d1f242cb94",
         "type": "github"
       },
       "original": {
@@ -76,11 +76,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1746461020,
-        "narHash": "sha256-7+pG1I9jvxNlmln4YgnlW4o+w0TZX24k688mibiFDUE=",
+        "lastModified": 1746904237,
+        "narHash": "sha256-3e+AVBczosP5dCLQmMoMEogM57gmZ2qrVSrmq9aResQ=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "3730d8a308f94996a9ba7c7138ede69c1b9ac4ae",
+        "rev": "d89fc19e405cb2d55ce7cc114356846a0ee5e956",
         "type": "github"
       },
       "original": {
diff --git a/home.nix b/home.nix
--- a/home.nix
+++ b/home.nix
@@ -32,6 +32,8 @@
     tmux
     coreutils
     util-linux
+    p7zip
+    unar
 
     unzip
     fd
@@ -274,6 +276,29 @@
   programs.nix-index = {
     enable = true;
     enableFishIntegration = true;
+  };
+  programs.helix = {
+    enable = true;
+    settings = {
+      theme = "everforest_dark";
+      editor.cursor-shape = {
+        normal = "block";
+        insert = "bar";
+        select = "underline";
+      };
+    };
+    languages.language = [
+      {
+        name = "nix";
+        auto-format = true;
+        formatter.command = "${pkgs.nixfmt}/bin/nixfmt";
+      }
+      {
+        name = "rust";
+        auto-format = true;
+        formatter.command = "${pkgs.rustfmt}/bin/rustfmt";
+      }
+    ];
   };
 
   # Independent config files.
diff --git a/vis/visrc.lua b/vis/visrc.lua
--- a/vis/visrc.lua
+++ b/vis/visrc.lua
@@ -45,11 +45,12 @@
 vis.events.subscribe(vis.events.WIN_OPEN, function(win)
 	--per-window configuration--
 	--vis:command('set number')
-	vis:command('set showtab on')
-	vis:command('set showspace on')
+	vis:command('set showtab off')
+	vis:command('set showspace off')
 	vis:command('set autoindent on')
 	vis:command('set cursorline on')
 	vis:command('set tabwidth 4')
+	vis:command('set expandtab on')
 end)