[Bug 939450] Re: ubiquity crashed with TypeError: argument of type 'NoneType' is not iterable in ubi-partman.py

[Martin Pitt]

For the record, I now have patches for both the "double signal" problem
(this bug), as well as the underlying problem of being unable to use
insert_with_valuesv(). Both are sent upstream for peer review.

** Changed in: pygobject (Ubuntu Precise)
       Status: Triaged => In Progress

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Title:
  ubiquity crashed with TypeError: argument of type 'NoneType' is not
  iterable in ubi-partman.py

Status in Python bindings for GObject:
  Confirmed
Status in “pygobject” package in Ubuntu:
  In Progress
Status in “ubiquity” package in Ubuntu:
  Fix Committed
Status in “pygobject” source package in Precise:
  In Progress
Status in “ubiquity” source package in Precise:
  Fix Committed

Bug description:
  TEST CASE
  1. Boot from a Live CD
  2. At ubiquity-dm select 'Install Ubuntu'
  3. Proceed to partman and select 'Something else' (manual partitioning)

  ACTUAL RESULT
  The partition list is empty and ubiquity crash with:

   Traceback (most recent call last):
     File "/usr/lib/ubiquity/plugins/ubi-partman.py", line 593, in partman_column_name
       if 'id' not in partition:
   TypeError: argument of type 'NoneType' is not iterable

  EXPECTED RESULT
  The partition list is displayed.

  Tested with ubiquity 2.9.20

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