diff --git a/flake.lock b/flake.lock
index 3891fe3b..df572d1b 100644
--- a/flake.lock
+++ b/flake.lock
@@ -449,6 +449,28 @@
         "type": "github"
       }
     },
+    "helix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "rust-overlay": "rust-overlay_2"
+      },
+      "locked": {
+        "lastModified": 1763684023,
+        "narHash": "sha256-qqs3d78CjGiU/6kebCLnrZZ5RSe3d89dDNnWohYooII=",
+        "owner": "mattwparas",
+        "repo": "helix",
+        "rev": "9044221322996b579c75bc1733f55da27301ad05",
+        "type": "github"
+      },
+      "original": {
+        "owner": "mattwparas",
+        "ref": "steel-event-system",
+        "repo": "helix",
+        "type": "github"
+      }
+    },
     "hercules-ci-effects": {
       "inputs": {
         "flake-parts": [
@@ -525,7 +547,7 @@
           "nixpkgs"
         ],
         "pre-commit-hooks-nix": "pre-commit-hooks-nix",
-        "rust-overlay": "rust-overlay_2"
+        "rust-overlay": "rust-overlay_3"
       },
       "locked": {
         "lastModified": 1762205063,
@@ -959,7 +981,7 @@
         "nixpkgs": [
           "nixpkgs"
         ],
-        "rust-overlay": "rust-overlay_3"
+        "rust-overlay": "rust-overlay_4"
       },
       "locked": {
         "lastModified": 1731006591,
@@ -1068,6 +1090,7 @@
         "disko": "disko",
         "ghostty": "ghostty",
         "haumea": "haumea",
+        "helix": "helix",
         "home-manager": "home-manager_2",
         "lanzaboote": "lanzaboote",
         "my-asahi-firmware": "my-asahi-firmware",
@@ -1110,6 +1133,27 @@
       }
     },
     "rust-overlay_2": {
+      "inputs": {
+        "nixpkgs": [
+          "helix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1759631821,
+        "narHash": "sha256-V8A1L0FaU/aSXZ1QNJScxC12uP4hANeRBgI4YdhHeRM=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "1d7cbdaad90f8a5255a89a6eddd8af24dc89cafe",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "rust-overlay_3": {
       "inputs": {
         "nixpkgs": [
           "lanzaboote",
@@ -1130,7 +1174,7 @@
         "type": "github"
       }
     },
-    "rust-overlay_3": {
+    "rust-overlay_4": {
       "inputs": {
         "flake-utils": "flake-utils_2",
         "nixpkgs": [
diff --git a/flake.nix b/flake.nix
index e0f8b524..5c440a76 100644
--- a/flake.nix
+++ b/flake.nix
@@ -143,6 +143,13 @@
 
     niri.url = "github:sodiboo/niri-flake";
 
+    helix = {
+      # Helix with steel as plugin system
+      # https://github.com/helix-editor/helix/pull/8675
+      url = "github:mattwparas/helix/steel-event-system";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     # -------------- Gaming ---------------------
 
     nix-gaming = {
diff --git a/home/base/core/editors/helix/default.nix b/home/base/core/editors/helix/default.nix
index 32640c68..5a1d9194 100644
--- a/home/base/core/editors/helix/default.nix
+++ b/home/base/core/editors/helix/default.nix
@@ -1,6 +1,4 @@
 { pkgs, ... }:
 {
-  programs.helix = {
-    enable = true;
-  };
+  programs.helix.enable = true;
 }
diff --git a/home/base/gui/terminal/ghostty.nix b/home/base/gui/terminal/ghostty.nix
index d86dee36..1825d051 100644
--- a/home/base/gui/terminal/ghostty.nix
+++ b/home/base/gui/terminal/ghostty.nix
@@ -16,7 +16,7 @@
         pkgs.hello # pkgs.ghostty is currently broken on darwin
       else
         pkgs.ghostty; # the stable version
-    # package = ghostty.packages.${pkgs.system}.default; # the latest version
+    # package = ghostty.packages.${pkgs.stdenv.hostPlatform.system}.default; # the latest version
     enableBashIntegration = false;
     installBatSyntax = false;
     # installVimSyntax = true;
diff --git a/home/base/tui/editors/helix/default.nix b/home/base/tui/editors/helix/default.nix
index 9b822747..8319476d 100644
--- a/home/base/tui/editors/helix/default.nix
+++ b/home/base/tui/editors/helix/default.nix
@@ -1,8 +1,20 @@
-{ pkgs, ... }:
+{ pkgs, helix, ... }:
+
+let
+  helixPackages = helix.packages.${pkgs.stdenv.hostPlatform.system};
+in
 {
+  home.packages = with pkgs; [
+    steel
+  ];
+
   programs.helix = {
     enable = true;
-    package = pkgs.helix;
+    # https://github.com/helix-editor/helix/pull/8675
+    package = helixPackages.default.overrideAttrs (prevAttrs: {
+      # enable steel as the plugin system
+      cargoBuildFeatures = prevAttrs.cargoBuildFeatures or [ ] ++ [ "steel" ];
+    });
     settings = {
       editor = {
         line-number = "relative";
diff --git a/home/linux/gui/base/creative.nix b/home/linux/gui/base/creative.nix
index 2ccdb2b4..b0651341 100644
--- a/home/linux/gui/base/creative.nix
+++ b/home/linux/gui/base/creative.nix
@@ -20,11 +20,11 @@
       # aseprite # Animated sprite editor & pixel art tool
 
       # this app consumes a lot of storage, so do not install it currently
-      # kicad     # 3d printing, eletrical engineering
+      # kicad     # 3d printing, electrical engineering
     ]
     ++ (lib.optionals pkgs.stdenv.isx86_64 [
       # https://github.com/edolstra/nix-warez/blob/master/blender/flake.nix
-      blender-bin.packages.${pkgs.system}.blender_4_2 # 3d modeling
+      blender-bin.packages.${pkgs.stdenv.hostPlatform.system}.blender_4_2 # 3d modeling
 
       ldtk # A modern, versatile 2D level editor
 
@@ -33,7 +33,7 @@
       # yosys # fpga synthesis
       # nextpnr # fpga place and route
       # openfpgaloader # fpga programming
-      # nur-ryan4yin.packages.${pkgs.system}.gowin-eda-edu-ide # app: `gowin-env` => `gw_ide` / `gw_pack` / ...
+      # nur-ryan4yin.packages.${pkgs.stdenv.hostPlatform.system}.gowin-eda-edu-ide # app: `gowin-env` => `gw_ide` / `gw_pack` / ...
     ]);
 
   programs = {
diff --git a/home/linux/gui/base/desktop/anyrun.nix b/home/linux/gui/base/desktop/anyrun.nix
index 27e984a9..87a2d009 100644
--- a/home/linux/gui/base/desktop/anyrun.nix
+++ b/home/linux/gui/base/desktop/anyrun.nix
@@ -5,7 +5,7 @@
 }:
 
 let
-  anyrunPackages = anyrun.packages.${pkgs.system};
+  anyrunPackages = anyrun.packages.${pkgs.stdenv.hostPlatform.system};
 in
 {
 
diff --git a/hosts/idols-aquamarine/gitea.nix b/hosts/idols-aquamarine/gitea.nix
index 162257da..4b5aaba5 100644
--- a/hosts/idols-aquamarine/gitea.nix
+++ b/hosts/idols-aquamarine/gitea.nix
@@ -49,7 +49,7 @@
         ENABLED = true;
         MAILER_TYPE = "sendmail";
         FROM = "do-not-reply@writefor.fun";
-        SENDMAIL_PATH = "${pkgs.system-sendmail}/bin/sendmail";
+        SENDMAIL_PATH = "${pkgs.stdenv.hostPlatform.system-sendmail}/bin/sendmail";
       };
       other = {
         SHOW_FOOTER_VERSION = false;
diff --git a/modules/nixos/desktop/virtualisation.nix b/modules/nixos/desktop/virtualisation.nix
index 1d8abe8d..fee0b9e9 100644
--- a/modules/nixos/desktop/virtualisation.nix
+++ b/modules/nixos/desktop/virtualisation.nix
@@ -65,7 +65,7 @@
     # https://github.com/casualsnek/waydroid_script
     # https://github.com/AtaraxiaSjel/nur/tree/master/pkgs/waydroid-script
     # https://wiki.archlinux.org/title/Waydroid#ARM_Apps_Incompatible
-    # nur-ataraxiasjel.packages.${pkgs.system}.waydroid-script
+    # nur-ataraxiasjel.packages.${pkgs.stdenv.hostPlatform.system}.waydroid-script
 
     # Need to add [File (in the menu bar) -> Add connection] when start for the first time
     # virt-manager
diff --git a/secrets/darwin.nix b/secrets/darwin.nix
index 8bfe964a..b406442c 100644
--- a/secrets/darwin.nix
+++ b/secrets/darwin.nix
@@ -18,7 +18,7 @@
   };
 
   environment.systemPackages = [
-    agenix.packages."${pkgs.system}".default
+    agenix.packages."${pkgs.stdenv.hostPlatform.system}".default
   ];
 
   # if you changed this key, you need to regenerate all encrypt files from the decrypt contents!
diff --git a/secrets/nixos.nix b/secrets/nixos.nix
index 4d07fcc5..71e90698 100644
--- a/secrets/nixos.nix
+++ b/secrets/nixos.nix
@@ -53,7 +53,7 @@ in
   config = mkIf (cfg.desktop.enable || enabledServerSecrets) (mkMerge [
     {
       environment.systemPackages = [
-        agenix.packages."${pkgs.system}".default
+        agenix.packages."${pkgs.stdenv.hostPlatform.system}".default
       ];
 
       # if you changed this key, you need to regenerate all encrypt files from the decrypt contents!