From 5b04d7a8a48c93dac0de3257e831bb9a4e0b236e Mon Sep 17 00:00:00 2001
From: Radovan Bast <bast@users.noreply.github.com>
Date: Fri, 20 May 2016 21:42:07 +0200
Subject: [PATCH] if pyaml is not available, print a nice error message

---
 update.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/update.py b/update.py
index 080b822..11c24f0 100644
--- a/update.py
+++ b/update.py
@@ -7,6 +7,14 @@ import sys
 AUTOCMAKE_GITHUB_URL = 'https://github.com/coderefinery/autocmake/raw/yaml/'
 
 
+def check_for_yaml():
+    try:
+        import yaml
+    except:
+        sys.stderr.write("ERROR: you need to install the pyaml module\n")
+        sys.exit(-1)
+
+
 def print_progress_bar(text, done, total, width):
     """
     Print progress bar.
@@ -270,4 +278,5 @@ def fetch_url(src, dst):
 
 
 if __name__ == '__main__':
+    check_for_yaml()
     main(sys.argv)