Clean environmnet harder

2 files changed, 10 insertions, 8 deletions

diff --git a/NEWS b/NEWS
index 2682b85..67d870f 100644
--- a/NEWS
+++ b/NEWS
@@ -7,9 +7,11 @@ Version 0.10, released UNRELEASED
 ---------------------------------
 
 * Yarn now cleans the environment when it runs shell commands for the
-  implementation steps. It also sets the `SRCDIR` environment variable
-  to point at the root of the source tree (the directory where yarn
-  was invoked from).
+  implementation steps. The PATH variable is kept from the user's
+  environment, every other variable is either removed or hardcoded to
+  a specific value. Additionally yarn sets the `SRCDIR` environment
+  variable to point at the root of the source tree (the directory
+  where yarn was invoked from).
 
 * A new option, `--timings`, has been added to yarn to report how long
   each scenario and each step took.
diff --git a/yarn b/yarn
index c13681b..3e9be0d 100755
--- a/yarn
+++ b/yarn
@@ -317,17 +317,17 @@ class YarnRunner(cliapp.Application):
         '''Return a clean environment for running tests.'''
 
         whitelisted = [
-            'TERM',
-            'USER',
-            'USERNAME',
             'PATH',
-            'HOME',
-            'LOGNAME',
         ]
 
         hardcoded = {
+            'TERM': 'dumb',
             'SHELL': '/bin/sh',
             'LC_ALL': 'C',
+            'USER': 'tomjon',
+            'USERNAME': 'tomjon',
+            'LOGNAME': 'tomjon',
+            'HOME': '/this/path/does/not/exist',
         }
 
         env = {}