[Bug 1860894] Re: openstack-dashboard failed to install because of collectstatic not found

[Vincent Brouillard]

I managed to install the requirements of stein to repair the install
afterwards using pip and pip3

sudo pip install -c
https://git.openstack.org/cgit/openstack/requirements/plain/upper-
constraints.txt?h=stable/stein -r
https://raw.githubusercontent.com/openstack/horizon/stable/stein/requirements.txt

sudo pip3 install -c
https://git.openstack.org/cgit/openstack/requirements/plain/upper-
constraints.txt?h=stable/stein -r
https://raw.githubusercontent.com/openstack/horizon/stable/stein/requirements.txt

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https://bugs.launchpad.net/bugs/1860894

Title:
  openstack-dashboard failed to install because of collectstatic not
  found

Status in horizon package in Ubuntu:
  New

Bug description:
  While trying to install openstack-dashboard it failled with the error:

  WARNING:root:"dashboards" and "default_dashboard" in (local_)settings is DEPRECATED now and may be unsupported in some future release. The preferred way to specify the order of dashboards and the default dashboard is the pluggable dashboard mechanism (in /usr/share/openstack-dashboard/openstack_dashboard/enabled, /usr/share/openstack-dashboard/openstack_dashboard/local/enabled).
  Traceback (most recent call last):
    File "/usr/local/lib/python3.6/dist-packages/django/core/management/__init__.py", line 204, in fetch_command
      app_name = commands[subcommand]
  KeyError: 'collectstatic'

  During handling of the above exception, another exception occurred:

  Traceback (most recent call last):
    File "manage.py", line 25, in <module>
      execute_from_command_line(sys.argv)
    File "/usr/local/lib/python3.6/dist-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
      utility.execute()
    File "/usr/local/lib/python3.6/dist-packages/django/core/management/__init__.py", line 375, in execute
      self.fetch_command(subcommand).run_from_argv(self.argv)
    File "/usr/local/lib/python3.6/dist-packages/django/core/management/__init__.py", line 211, in fetch_command
      settings.INSTALLED_APPS
    File "/usr/local/lib/python3.6/dist-packages/django/conf/__init__.py", line 79, in __getattr__
      self._setup(name)
    File "/usr/local/lib/python3.6/dist-packages/django/conf/__init__.py", line 66, in _setup
      self._wrapped = Settings(settings_module)
    File "/usr/local/lib/python3.6/dist-packages/django/conf/__init__.py", line 157, in __init__
      mod = importlib.import_module(self.SETTINGS_MODULE)
    File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
      return _bootstrap._gcd_import(name[level:], package, level)
    File "<frozen importlib._bootstrap>", line 994, in _gcd_import
    File "<frozen importlib._bootstrap>", line 971, in _find_and_load
    File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
    File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
    File "<frozen importlib._bootstrap_external>", line 678, in exec_module
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "/usr/share/openstack-dashboard/openstack_dashboard/settings.py", line 522, in <module>
      XSTATIC_MODULES, HORIZON_CONFIG)
    File "/usr/share/openstack-dashboard/openstack_dashboard/utils/settings.py", line 260, in get_xstatic_dirs
      module = import_module(module_name)
    File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
      return _bootstrap._gcd_import(name[level:], package, level)
    File "<frozen importlib._bootstrap>", line 994, in _gcd_import
    File "<frozen importlib._bootstrap>", line 971, in _find_and_load
    File "<frozen importlib._bootstrap>", line 941, in _find_and_load_unlocked
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "<frozen importlib._bootstrap>", line 994, in _gcd_import
    File "<frozen importlib._bootstrap>", line 971, in _find_and_load
    File "<frozen importlib._bootstrap>", line 941, in _find_and_load_unlocked
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "<frozen importlib._bootstrap>", line 994, in _gcd_import
    File "<frozen importlib._bootstrap>", line 971, in _find_and_load
    File "<frozen importlib._bootstrap>", line 953, in _find_and_load_unlocked
  ModuleNotFoundError: No module named 'horizon.xstatic'
  dpkg: error processing package openstack-dashboard (--configure):
   installed openstack-dashboard package post-installation script subprocess returned error exit status 1
  dpkg: dependency problems prevent configuration of openstack-dashboard-ubuntu-theme:
   openstack-dashboard-ubuntu-theme depends on openstack-dashboard (= 3:15.1.1-0ubuntu1.1~cloud0); however:
    Package openstack-dashboard is not configured yet.
    
    
  ============
  lsb_release -rd

  Description:	Ubuntu 18.04.3 LTS
  Release:	18.04

  ============
  apt-cache policy openstack-dashboard

  openstack-dashboard:
    Installed: 3:15.1.1-0ubuntu1.1~cloud0
    Candidate: 3:15.1.1-0ubuntu1.1~cloud0
    Version table:
   *** 3:15.1.1-0ubuntu1.1~cloud0 500
          500 http://ubuntu-cloud.archive.canonical.com/ubuntu bionic-updates/stein/main amd64 Packages
          100 /var/lib/dpkg/status
       3:13.0.2-0ubuntu2 500
          500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
       3:13.0.0-0ubuntu1 500
          500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages

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