Allowed to change default ".pioenvs" directory with global env "export $PIOENVS_DIR"

platformio/builder/main.py

@@ -6,7 +6,8 @@ from os.path import isdir, join
 from SCons.Script import (DefaultEnvironment, Exit, SConscript,
                           SConscriptChdir, Variables)
 
-from platformio.util import get_home_dir, get_project_dir, get_source_dir
+from platformio.util import (get_home_dir, get_pioenvs_dir, get_project_dir,
+                             get_source_dir)
 
 # AllowSubstExceptions()
 
@@ -37,13 +38,14 @@ DefaultEnvironment(
 
     PIOBUILDER_DIR=join(get_source_dir(), "builder"),
     PROJECT_DIR=get_project_dir(),
+    PIOENVS_DIR=get_pioenvs_dir(),
 
     PLATFORMIOHOME_DIR=get_home_dir(),
     PLATFORM_DIR=join("$PLATFORMIOHOME_DIR", "$PLATFORM"),
     PLATFORMFW_DIR=join("$PLATFORM_DIR", "frameworks", "$FRAMEWORK"),
     PLATFORMTOOLS_DIR=join("$PLATFORM_DIR", "tools"),
 
-    BUILD_DIR=join("$PROJECT_DIR", ".pioenvs", "$PIOENV"),
+    BUILD_DIR=join("$PIOENVS_DIR", "$PIOENV"),
     LIBSOURCE_DIRS=[
         join("$PROJECT_DIR", "lib"),
         join("$PLATFORMFW_DIR", "libraries"),

platformio/util.py

@@ -1,16 +1,17 @@
 # Copyright (C) Ivan Kravets <me@ikravets.com>
 # See LICENSE for details.
 
-from os import getcwd, listdir, utime
 from os import name as os_name
+from os import getcwd, getenv, listdir, utime
 from os.path import dirname, expanduser, isfile, join, realpath
 from platform import architecture, system
 from subprocess import PIPE, Popen
 from time import sleep
 
-from platformio.exception import NotPlatformProject
 from serial import Serial
 
+from platformio.exception import GetSerialPortsError, NotPlatformProject
+
 try:
     from configparser import ConfigParser
 except ImportError:
@@ -33,6 +34,10 @@ def get_project_dir():
     return getcwd()
 
 
+def get_pioenvs_dir():
+    return getenv("PIOENVS_DIR", join(get_project_dir(), ".pioenvs"))
+
+
 def get_project_config():
     path = join(get_project_dir(), "platformio.ini")
     if not isfile(path):