[bootstrap3-jinja] Exception: Can't find theme 'bootstrap3'

[davidak]

It seems i can't install the theme because it is not installed.

[davidak@X230:~/code/webseite]$ nikola theme -i bootstrap3-jinja
[2019-04-22T18:04:48Z] WARNING: Nikola: The sections feature has been removed and its functionality has been merged into categories.
[2019-04-22T18:04:48Z] WARNING: Nikola: For more information on how to migrate, please read: https://getnikola.com/blog/upgrading-to-nikola-v8.html#sections-were-replaced-by-categories
[2019-04-22T18:04:48Z] INFO: Nikola: Setting CATEGORY_DESTPATH_AS_DEFAULT = True
[2019-04-22T18:04:49Z] WARNING: Nikola: Cannot load theme "bootstrap3-jinja", using 'bootblog4' instead.
Traceback (most recent call last):
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/nikola.py", line 1229, in _get_themes
    self._THEMES = utils.get_theme_chain(self.config['THEME'], self.themes_dirs)
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/utils.py", line 700, in get_theme_chain
    themes = [get_theme_path_real(theme, themes_dirs)]
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/utils.py", line 642, in get_theme_path_real
    raise Exception("Can't find theme '{0}'".format(theme))
Exception: Can't find theme 'bootstrap3-jinja'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/nix/store/xz8cmgfwjsfmfpnwm0lnvqymyrnrhgpg-python3.7-Nikola-8.0.2/bin/.nikola-wrapped", line 11, in <module>
    sys.exit(main())
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/__main__.py", line 166, in main
    _ = DN.run(oargs)
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/__main__.py", line 342, in run
    self.nikola.init_plugins()
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/nikola.py", line 998, in init_plugins
    self._activate_plugins_of_category("PostScanner")
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/nikola.py", line 1222, in _activate_plugins_of_category
    plugin_info.plugin_object.set_site(self)
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/plugin_categories.py", line 73, in set_site
    self.inject_templates()
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/plugin_categories.py", line 85, in inject_templates
    mod_dir, 'templates', self.site.template_system.name
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/nikola.py", line 1285, in _get_template_system
    template_sys_name = utils.get_template_engine(self.THEMES)
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/nikola.py", line 1235, in _get_themes
    return self._get_themes()
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/nikola.py", line 1229, in _get_themes
    self._THEMES = utils.get_theme_chain(self.config['THEME'], self.themes_dirs)
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/utils.py", line 703, in get_theme_chain
    parent = get_parent_theme_name(themes[-1], themes_dirs=themes_dirs)
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/utils.py", line 684, in get_parent_theme_name
    return get_theme_path_real(parent, themes_dirs)
  File "/nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/utils.py", line 642, in get_theme_path_real
    raise Exception("Can't find theme '{0}'".format(theme))
Exception: Can't find theme 'bootstrap3'

Or does it has to be included in the package?

[davidak@X230:~/code/webseite]$ ll /nix/store/w0a1z0vcrwsc23928gvybv47mb56dycq-python3-3.7.3-env/lib/python3.7/site-packages/nikola/data/themes/
total 24
dr-xr-xr-x 5 root root 4096  1. Jan 1970  base
dr-xr-xr-x 3 root root 4096  1. Jan 1970  base-jinja
dr-xr-xr-x 4 root root 4096  1. Jan 1970  bootblog4
dr-xr-xr-x 4 root root 4096  1. Jan 1970  bootblog4-jinja
dr-xr-xr-x 4 root root 4096  1. Jan 1970  bootstrap4
dr-xr-xr-x 4 root root 4096  1. Jan 1970  bootstrap4-jinja

[Kwpolska]

Cannot reproduce with Nikola from master, even with THEME = 'bootstrap3-jinja'

$ nikola theme -i bootstrap3-jinja
[2019-04-22T18:24:26Z] WARNING: Nikola: Cannot load theme "bootstrap3-jinja", using 'bootblog4' instead.
[2019-04-22T18:24:26Z] INFO: theme: Downloading 'https://themes.getnikola.com/v8/bootstrap3-jinja.zip'
[2019-04-22T18:24:28Z] INFO: theme: Extracting 'bootstrap3-jinja' into themes/
[2019-04-22T18:24:28Z] NOTICE: theme: Remember to set THEME="bootstrap3-jinja" in conf.py to use this theme.

After that, nikola build succeeds.