platformio: 5.0.2 -> 5.0.3

In addition to the version change, the source is managed in a central
location, since previously the same change had to be made in two places.

pkgs/development/arduino/platformio/chrootenv.nix

@@ -1,11 +1,11 @@
-{ lib, buildFHSUserEnv, fetchFromGitHub }:
+{ lib, buildFHSUserEnv, version, src }:
 
 let
   pio-pkgs = pkgs:
     let
       python = pkgs.python3.override {
         packageOverrides = self: super: {
-          platformio = self.callPackage ./core.nix { };
+          platformio = self.callPackage ./core.nix { inherit version src; };
         };
       };
     in (with pkgs; [
@@ -19,14 +19,6 @@ let
       platformio
     ]);
 
-  src = fetchFromGitHub {
-    owner = "platformio";
-    repo = "platformio-core";
-    rev = "v5.0.2";
-    sha256 = "1hbw8nbllyj0xyx1rz2chx9vyqf9949dcdx4v9hnfbsjwwpcfi0a";
-  };
-
-
 in buildFHSUserEnv {
   name = "platformio";