diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/.gitignore b/.gitignore
index ea8c4bf..4fbb802 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 /target
+
+.direnv/
diff --git a/flake.lock b/flake.lock
index f1588d5..72e1abc 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,39 +1,6 @@
 {
   "nodes": {
-    "naersk": {
-      "inputs": {
-        "nixpkgs": "nixpkgs"
-      },
-      "locked": {
-        "lastModified": 1659610603,
-        "narHash": "sha256-LYgASYSPYo7O71WfeUOaEUzYfzuXm8c8eavJcel+pfI=",
-        "owner": "nix-community",
-        "repo": "naersk",
-        "rev": "c6a45e4277fa58abd524681466d3450f896dc094",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "ref": "master",
-        "repo": "naersk",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
-      "locked": {
-        "lastModified": 1661008273,
-        "narHash": "sha256-UpDqsGzUswIHG7FwzeIewjWlElF17UVLNbI2pwlbcBY=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "0cc6444e74cd21e8da8d81ef4cd778492e10f843",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "type": "indirect"
-      }
-    },
-    "nixpkgs_2": {
       "locked": {
         "lastModified": 1661008273,
         "narHash": "sha256-UpDqsGzUswIHG7FwzeIewjWlElF17UVLNbI2pwlbcBY=",
@@ -51,8 +18,7 @@
     },
     "root": {
       "inputs": {
-        "naersk": "naersk",
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs": "nixpkgs",
         "utils": "utils"
       }
     },
diff --git a/flake.nix b/flake.nix
index e59f72a..d477620 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,45 +1,30 @@
 {
   inputs = {
-    naersk.url = "github:nix-community/naersk/master";
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
     utils.url = "github:numtide/flake-utils";
   };
 
-  outputs = { self, nixpkgs, utils, naersk }:
+  outputs = { self, nixpkgs, utils }:
     utils.lib.eachDefaultSystem (system:
       let
-        name = "tas";
         pkgs = import nixpkgs { inherit system; };
-        naersk-lib = pkgs.callPackage naersk { };
+        cargoToml = with builtins; (fromTOML (readFile ./Cargo.toml));
       in
       rec {
-        # Executes by `nix build .#<name>`
-        packages = {
-          ${name} = naersk.lib.${system}.buildPackage {
-            pname = name;
-            root = ./.;
-          };
+        packages.default = pkgs.rustPlatform.buildRustPackage {
+          inherit (cargoToml.package) name version;
+          src = nixpkgs.lib.cleanSource ./.;
+          doCheck = true;
+          cargoLock.lockFile = ./Cargo.lock;
         };
-        # Executes by `nix build .`
-        packages.default = packages.${name};
-        # the same but deprecated in Nix 2.7
-        defaultPackage = packages.default;
 
-        # Executes by `nix run .#<name> -- <args?>` 
-        apps = {
-          ${name} = utils.lib.mkApp {
-            inherit name;
-            drv = packages.${name};
-          };
+        apps.default = utils.lib.mkApp {
+          inherit (cargoToml.package) name;
+          drv = packages.default;
         };
-        # Executes by `nix run . -- <args?>`
-        apps.default = apps.${name};
-        # the same but deprecated in Nix 2.7
-        defaultApp = apps.default;
 
-        # Used by `nix develop`
         devShell = with pkgs; mkShell {
-          buildInputs = [ cargo rustc rustfmt rustPackages.clippy ];
+          packages = [ cargo rustc rustfmt clippy rust-analyzer ];
           RUST_SRC_PATH = rustPlatform.rustLibSrc;
         };
       });