Adding an to make the pip wheel invocation more or less verbose

cibuildwheel/util.py

@@ -13,6 +13,15 @@ def prepare_command(command, python, pip, project):
     return command.format(python=python, pip=pip, project=project)
 
 
+def get_build_verbosity_flag(level):
+    if level > 0:
+        return '-' + level * 'v'
+    elif level < 0:
+        return '-' + -level * 'q'
+    else:
+        return ''
+
+
 class BuildSkipper(object):
     def __init__(self, skip_config):
         self.patterns = skip_config.split()