diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..a67fb22
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1749285348,
+        "narHash": "sha256-frdhQvPbmDYaScPFiCnfdh3B/Vh81Uuoo0w5TkWmmjU=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "3e3afe5174c561dee0df6f2c2b2236990146329f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
index 273b351..1f8f546 100644
--- a/flake.nix
+++ b/flake.nix
@@ -8,16 +8,18 @@
   outputs = {
     self,
     nixpkgs,
-  }: {
+  }: let
+        src = fetchTarball {
+                url = "https://git.stuce.ch/stuce/sTodo/releases/download/Release1/release1.tar.gz";
+                sha256 = "10jyldwmcs5zyz1k8lp3jscn7nhlvn56g0709l5jp91qimw7xiqz";
+        };
+  in 
+{
     packages.x86_64-linux.sTodo = with nixpkgs.legacyPackages.x86_64-linux;
       stdenv.mkDerivation {
         pname = "sTodo";
         version = "1.0.0";
 
-        src = fetchTarball {
-          url = "https://git.stuce.ch/stuce/sTodo/releases/download/Release1/release1.tar.gz";
-          sha256 = "10jyldwmcs5zyz1k8lp3jscn7nhlvn56g0709l5jp91qimw7xiqz";
-        };
         buildInputs = [zlib gmp libffi openssl];
         installPhase = ''
           mkdir -p $out/bin
@@ -44,19 +46,6 @@
           default = "http://localhost:6901";
           description = "Link used to access the webapp";
         };
-
-        staticRoot = lib.mkOption {
-          type = lib.types.str;
-          default = "/etc/sTodo/static";
-          description = "Location of the static folder";
-        };
-
-        databaseFolder = lib.mkOption {
-          type = lib.types.str;
-          default = "/etc/sTodo/sTodo.sqlite3";
-          description = "Location of the database folder";
-        };
-
         clientSessionKey = lib.mkOption {
           type = lib.types.str;
           default = "/etc/sTodo/client_session_key.aes";
@@ -72,6 +61,10 @@
 
       # Systemd Service
       config = lib.mkIf cfg.enable {
+        environment.etc = {
+                source = "$src/static";
+                target = "sTodo/static";
+          };
         systemd.services.sTodo = {
           description = "Launch a sTodo app to have a online todolist";
           after = ["network.target"];
@@ -83,9 +76,9 @@
           environment = {
             YESOD_PORT = "${toString cfg.port}";
             YESOD_APPROOT = "${cfg.appRoot}";
-            YESOD_SQLITE_DATABASE = "${cfg.databaseFolder}";
-            YESOD_STATIC_DIR = "${cfg.staticRoot}";
-            YESOD_SESSION_KEY = "${cfg.clientSessionKey}";
+            YESOD_SQLITE_DATABASE = "/etc/sTodo/sTodo.sqlite3";
+            YESOD_STATIC_DIR = "/etc/sTodo/static";
+            YESOD_SESSION_KEY = "/etc/sTodo/client_session_key.aes";
           };
         };
       };