platformio-core: expose unwrapped platformio as platformio-core

PlatformIO is a pure python package that is in turn a package
manager. In a pure NixOS environment, this means that any downloaded
binary packages will not run. To make PlatformIO usable, there's a
chrootenv wrapper. However, in a mixed environment like other linux or
darwin, the pure python version will work, and in the case of darwin
only the pure version will work, since the chrootenv wrapper is not
supported.

To handle the above use cases we have:

 * platformio -- unwrapped on darwin, wrapped on linux. Should always
                 provide a functional platformio.

 * platformio-core -- always unwrapped (like "bintools-unwrapped") for
                      when the wrapper is explicitly not required. For
                      example, on other linux where the chrootenv is
                      not supported.

pkgs/development/embedded/platformio/chrootenv.nix

@@ -4,9 +4,9 @@ let
   pio-pkgs = pkgs:
     let
       python = pkgs.python3;
-      platformio = python.pkgs.callPackage ./core.nix { inherit version src; };
     in
     (with pkgs; [
+      platformio-core
       zlib
       git
       xdg-user-dirs
@@ -15,7 +15,6 @@ let
       setuptools
       pip
       bottle
-      platformio
     ]);
 
 in

pkgs/development/embedded/platformio/default.nix

@@ -1,4 +1,4 @@
-{ newScope, fetchFromGitHub }:
+{ newScope, fetchFromGitHub, python3Packages }:
 
 let
   callPackage = newScope self;
@@ -14,6 +14,8 @@ let
   };
 
   self = {
+    platformio-core = python3Packages.callPackage ./core.nix { inherit version src; };
+
     platformio-chrootenv = callPackage ./chrootenv.nix { inherit version src; };
   };
 

pkgs/top-level/all-packages.nix

@@ -11105,7 +11105,8 @@ with pkgs;
   };
 
   platformioPackages = dontRecurseIntoAttrs (callPackage ../development/embedded/platformio { });
-  platformio = platformioPackages.platformio-chrootenv;
+  platformio = if stdenv.isLinux then platformioPackages.platformio-chrootenv else platformioPackages.platformio-core;
+  platformio-core = platformioPackages.platformio-core;
 
   platinum-searcher = callPackage ../tools/text/platinum-searcher { };