Make yarn run shell scripts with -x

This makes debugging easier.

1 files changed, 1 insertions, 1 deletions

diff --git a/yarn b/yarn
index fbf928d..202d726 100755
--- a/yarn
+++ b/yarn
@@ -308,7 +308,7 @@ class YarnRunner(cliapp.Application):
         shell_script = '%s\n\n%s\n' % (
             shell_prelude, step.implementation.shell)
         exit, stdout, stderr = cliapp.runcmd_unchecked(
-            ['sh', '-euc', shell_script], env=env)
+            ['sh', '-xeuc', shell_script], env=env)
 
         logging.debug('Exit code: %d' % exit)
         if stdout: