Merge pull request kivy#742 from kived/venv-error

inclement · inclement · commit ac25fabfeb42 · 2016-05-12T19:27:43.000+01:00
throw error early if running in venv
diff --git a/pythonforandroid/toolchain.py b/pythonforandroid/toolchain.py
@@ -30,7 +30,7 @@
 from pythonforandroid.archs import (ArchARM, ArchARMv7_a, Archx86)
 from pythonforandroid.logger import (logger, info, warning, setup_color,
                                      Out_Style, Out_Fore, Err_Style, Err_Fore,
-                                     info_notify, info_main, shprint)
+                                     info_notify, info_main, shprint, error)
 from pythonforandroid.util import current_directory, ensure_dir
 from pythonforandroid.bootstrap import Bootstrap
 from pythonforandroid.distribution import Distribution, pretty_log_dists
@@ -118,6 +118,13 @@ def build_dist_from_args(ctx, dist, args):
     ctx.recipe_build_order = build_order
     ctx.python_modules = python_modules
 
+    if python_modules and hasattr(sys, 'real_prefix'):
+        error('virtualenv is needed to install pure-Python modules, but')
+        error('virtualenv does not support nesting, and you are running')
+        error('python-for-android in one. Please run p4a outside of a')
+        error('virtualenv instead.')
+        exit(1)
+
     info('The selected bootstrap is {}'.format(bs.name))
     info_main('# Creating dist with {} bootstrap'.format(bs.name))
     bs.distribution = dist
