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-rw-r--r--support/lib/util.py7
1 files changed, 6 insertions, 1 deletions
diff --git a/support/lib/util.py b/support/lib/util.py
index bede240..8b65e58 100644
--- a/support/lib/util.py
+++ b/support/lib/util.py
@@ -1,6 +1,10 @@
import contextlib, subprocess, tempfile, shutil, re, os
+class UserError(Exception):
+ pass
+
+
@contextlib.contextmanager
def TemporaryDirectory():
dir = tempfile.mkdtemp()
@@ -15,7 +19,8 @@ def command(args):
process = subprocess.Popen(args)
process.wait()
- assert not process.returncode
+ if process.returncode:
+ raise UserError('Command failed: {}'.format(' '.join(args)))
def bash_escape_string(string):