Require python3

default.nix

@@ -1,5 +1,5 @@
-{ python }:
-with python.pkgs;
+{ python3 }:
+with python3.pkgs;
 buildPythonApplication rec {
   name = "mqtt-dash";
   src = ./.;

release.nix

@@ -5,5 +5,5 @@
       let
         pkgs = import <nixpkgs> { inherit system; };
       in
-        pkgs.callPackage ./. { python = pkgs.python3; };
+        pkgs.callPackage ./. {};
 }

shell.nix

@@ -1,2 +1,2 @@
 { pkgs ? import <nixpkgs> {} }:
-pkgs.callPackage ./. { python = pkgs.python3; }
+pkgs.callPackage ./. {}