diff --git a/flake.nix b/flake.nix
index 1ce00c5..504a1ec 100644
--- a/flake.nix
+++ b/flake.nix
@@ -39,11 +39,7 @@
     flake-utils.lib.eachSystem supportedSystems (
       system:
       let
-        pkgs = import nixpkgs {
-          inherit system;
-          overlays = [
-          ];
-        };
+        pkgs = import nixpkgs { inherit system; };
       in
       rec {
         # We still maintain the expression in a Nixpkgs-acceptable form
@@ -108,11 +104,11 @@
         apps.default = self.apps.${system}.colmena;
         apps.colmena = {
           type = "app";
-          program = "${defaultPackage}/bin/colmena";
+          program = pkgs.lib.getExe defaultPackage;
         };
 
         devShell = pkgs.mkShell {
-          RUST_SRC_PATH = "${pkgs.rustPlatform.rustcSrc}/library";
+          RUST_SRC_PATH = pkgs.rustPlatform.rustLibSrc;
           NIX_PATH = "nixpkgs=${pkgs.path}";
 
           inputsFrom = [