[Bug 1568971] Re: Ubuntu Mitaka package fails to upgrade with SyntaxError: Undefined variable: '$helpPanelWidthDefault'.

[Launchpad Bug Tracker]

This bug was fixed in the package horizon - 2:9.0.0-0ubuntu2

---------------
horizon (2:9.0.0-0ubuntu2) xenial; urgency=medium

  * d/openstack-dashboard.[preinst|postrm]: Remove any static files from
    /usr/share/openstack-dashboard/static/* prior to install and after removal
    (LP: #1568971).

 -- Corey Bryant <corey.bryant at canonical.com>  Mon, 18 Apr 2016 15:05:42
-0400

** Changed in: horizon (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1568971

Title:
  Ubuntu Mitaka package fails to upgrade with SyntaxError: Undefined
  variable: '$helpPanelWidthDefault'.

Status in horizon package in Ubuntu:
  Fix Released

Bug description:
  Upgrading Mitaka from Liberty fails with:
  Unpacking openstack-dashboard (2:9.0.0-0ubuntu1~cloud0) over (2:8.0.1-0ubuntu1~cloud0) ...
  .
  .
  .
  Collecting and compressing static assets...
  CommandError: An error occurred during rendering /usr/share/openstack-dashboard/openstack_dashboard/templates/_stylesheets.html: Error evaluating expression:
      $helpPanelWidthDefault

  on line 51 of framework/widgets/help-panel/help-panel.scss
  imported from line 50 of framework/widgets/widgets.scss
  imported from line 50 of framework/framework.scss
  imported from line 6 of dashboard/scss/horizon.scss
  imported from line 1 of u'string:ed963272ebc1da4e:\n // My Themes\n at import "/themes/ubuntu/variables";\n\n// Horizon\n at import "/dashboard/scss/horizon.s'
  Traceback:
    File "/usr/lib/python2.7/dist-packages/scss/calculator.py", line 141, in evaluate_expression
      return ast.evaluate(self, divide=divide)
    File "/usr/lib/python2.7/dist-packages/scss/ast.py", line 346, in evaluate
      raise SyntaxError("Undefined variable: '%s'." % self.name)
  SyntaxError: Undefined variable: '$helpPanelWidthDefault'.
  dpkg: error processing package openstack-dashboard (--configure):
   subprocess installed post-installation script returned error exit status 1

  The workaround is to clean up the compiled static assets before
  upgrading (/usr/share/openstack-dashboard/openstack_dashboard/static).
  I think it should be done in the pre-install script.

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