diff --git a/.direnv/flake-inputs/9hpficax6bzwhgl622w21pkx39wl6r8w-source b/.direnv/flake-inputs/9hpficax6bzwhgl622w21pkx39wl6r8w-source
deleted file mode 120000
index 160e0cf..0000000
--- a/.direnv/flake-inputs/9hpficax6bzwhgl622w21pkx39wl6r8w-source
+++ /dev/null
@@ -1 +0,0 @@
-/nix/store/9hpficax6bzwhgl622w21pkx39wl6r8w-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/r1n51h2kvjxvy04rlgfch87izm58nhcb-source b/.direnv/flake-inputs/r1n51h2kvjxvy04rlgfch87izm58nhcb-source
new file mode 120000
index 0000000..9829cc9
--- /dev/null
+++ b/.direnv/flake-inputs/r1n51h2kvjxvy04rlgfch87izm58nhcb-source
@@ -0,0 +1 @@
+/nix/store/r1n51h2kvjxvy04rlgfch87izm58nhcb-source
\ No newline at end of file
diff --git a/flake.lock b/flake.lock
index af876e5..046608a 100644
--- a/flake.lock
+++ b/flake.lock
@@ -17,7 +17,7 @@
       },
       "original": {
         "type": "tarball",
-        "url": "https://flakehub.com/f/nix-community/fenix/0.1"
+        "url": "https://flakehub.com/f/nix-community/fenix/0.1.%2A"
       }
     },
     "nixpkgs": {
@@ -31,7 +31,7 @@
       },
       "original": {
         "type": "tarball",
-        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1"
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A"
       }
     },
     "root": {
diff --git a/flake.nix b/flake.nix
index 63b3760..613ae8a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,15 +2,14 @@
   description = "A Nix-flake-based Rust development environment";
 
   inputs = {
-    nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1"; # unstable Nixpkgs
+    nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*"; # unstable
     fenix = {
-      url = "https://flakehub.com/f/nix-community/fenix/0.1";
+      url = "https://flakehub.com/f/nix-community/fenix/0.1.*";
       inputs.nixpkgs.follows = "nixpkgs";
     };
   };
 
-  outputs =
-    { self, ... }@inputs:
+  outputs = { self, nixpkgs, fenix, ... }@inputs:
     let
       supportedSystems = [
         "x86_64-linux"
@@ -18,24 +17,23 @@
         "x86_64-darwin"
         "aarch64-darwin"
       ];
-      forEachSupportedSystem =
-        f:
-        inputs.nixpkgs.lib.genAttrs supportedSystems (
-          system:
+
+      forEachSupportedSystem = f:
+        nixpkgs.lib.genAttrs supportedSystems (system:
           f {
-            pkgs = import inputs.nixpkgs {
+            pkgs = import nixpkgs {
               inherit system;
-              overlays = [
-                inputs.self.overlays.default
-              ];
+              overlays = [ self.overlays.default ];
             };
+            inherit system;
           }
         );
+
     in
     {
       overlays.default = final: prev: {
         rustToolchain =
-          with inputs.fenix.packages.${prev.stdenv.hostPlatform.system};
+          with fenix.packages.${prev.stdenv.hostPlatform.system};
           combine (
             with stable;
             [
@@ -48,47 +46,38 @@
           );
       };
 
-      packages = forEachSupportedSystem ({ pkgs }: {
-        default =
-          pkgs.rustPlatform.buildRustPackage {
-            pname = "my-rust-project"; # Change to your Cargo.toml [package] name if different
-            version = "0.1.0";         # Change to your Cargo.toml [package] version
+      packages = forEachSupportedSystem ({ pkgs, system }:
+        {
+          default = pkgs.rustPlatform.buildRustPackage {
+            pname = "my-rust-project";     # change if needed
+            version = "0.1.0";             # change if needed
 
             src = pkgs.lib.cleanSource ./.;
 
             cargoLock = {
               lockFile = ./Cargo.lock;
-              # If you have additional lock files (e.g., for alternative registries), add them here
             };
 
-            nativeBuildInputs = with pkgs; [
-              pkg-config
-            ];
-
-            buildInputs = with pkgs; [
-              openssl
-            ];
-
-            # Optional: for faster iterative development, you can copy artifacts from cargo
-            # doCheck = false; # if you want to skip tests during nix build
+            nativeBuildInputs = with pkgs; [ pkg-config ];
+            buildInputs = with pkgs; [ openssl ];
 
             meta = with pkgs.lib; {
               description = "My Rust project";
-              license = licenses.mit; # Adjust as needed
-              mainProgram = "whereAmI"; # Optional: name of the main binary for nix run
+              license = licenses.mit;
+              mainProgram = "whereAmI";
             };
           };
-      });
+        });
 
-      apps = forEachSupportedSystem ({ pkgs }: {
-        default = {
-          type = "app";
-          program = "${pkgs.default}/bin/whereAmI";  # or self.packages.${pkgs.system}.default
-        };
-      });
+      apps = forEachSupportedSystem ({ pkgs, system }:
+        {
+          default = {
+            type = "app";
+            program = "${self.packages.${system}.default}/bin/whereAmI";
+          };
+        });
 
-      devShells = forEachSupportedSystem (
-        { pkgs }:
+      devShells = forEachSupportedSystem ({ pkgs, system }:
         {
           default = pkgs.mkShell {
             packages = with pkgs; [
@@ -100,12 +89,11 @@
               cargo-watch
               rust-analyzer
             ];
+
             env = {
-              # Required by rust-analyzer
               RUST_SRC_PATH = "${pkgs.rustToolchain}/lib/rustlib/src/rust/library";
             };
           };
-        }
-      );
+        });
     };
 }