Don't run debootstrap with empty --include=

Since the kernel may not be included any more, it is possible to
get an empty include list, which debootstrap complains is invalid.

To solve this, restructure the runcmd, so that it checks the include
list before attempting to add --include to the argument list.

1 files changed, 5 insertions, 6 deletions

diff --git a/vmdebootstrap b/vmdebootstrap
index 2ffe663..37b1b78 100755
--- a/vmdebootstrap
+++ b/vmdebootstrap
@@ -188,12 +188,11 @@ class VmDebootstrap(cliapp.Application):
         if self.settings['sudo'] and 'sudo' not in include:
             include.append('sudo')
 
-        self.runcmd(['debootstrap', 
-                     '--arch=%s' % self.settings['arch'],
-                     '--include=%s' % ','.join(include),
-                     self.settings['distribution'],
-                     rootdir, 
-                     self.settings['mirror']])
+        args = ['debootstrap', '--arch=%s' % self.settings['arch']]
+        if include: args.append('--include=%s' % ','.join(include))
+        args += [self.settings['distribution'],
+                 rootdir, self.settings['mirror']]
+        self.runcmd(args)
 
     def set_hostname(self, rootdir):
         hostname = self.settings['hostname']