diff --git a/pkgs/development/arduino/platformio/chrootenv.nix b/pkgs/development/arduino/platformio/chrootenv.nix
index a3720619241..69182c3aa0d 100644
--- a/pkgs/development/arduino/platformio/chrootenv.nix
+++ b/pkgs/development/arduino/platformio/chrootenv.nix
@@ -1,26 +1,21 @@
-{ lib, buildFHSUserEnv, platformio, stdenv }:
-
+{ stdenv, lib, buildFHSUserEnv
+}:
+let
+  pio-pkgs = pkgs: (with pkgs;
+    [
+      python27Packages.python
+      python27Packages.setuptools
+      python27Packages.pip
+      python27Packages.bottle
+      python27Packages.platformio
+      zlib
+    ]);
+in
 buildFHSUserEnv {
   name = "platformio";
 
-  targetPkgs = pkgs: (with pkgs;
-    [
-      python27Packages.python
-      python27Packages.setuptools
-      python27Packages.pip
-      python27Packages.bottle
-      python27Packages.platformio
-      zlib
-    ]);
-  multiPkgs = pkgs: (with pkgs;
-    [
-      python27Packages.python
-      python27Packages.setuptools
-      python27Packages.pip
-      python27Packages.bottle
-      python27Packages.platformio
-      zlib
-    ]);
+  targetPkgs = pio-pkgs;
+  multiPkgs = pio-pkgs;
 
   meta = with stdenv.lib; {
     description = "An open source ecosystem for IoT development";