Commits on Oct 11, 2023

1. CLI: Make loading of config lazy …

   The `VerdiContext` class, which provides the custom context of the
   `verdi` commands, loads the configuration. This has a non-negligible
   cost and so slows down the responsiveness of the CLI. This is especially
   noticeable during tab-completion.
   
   The `obj` custom object of the `VerdiContext` is replaced with a
   subclass of `AttributeDict` that lazily populates the `config` key when
   it is called with the loaded `Config` class. In addition, the defaults
   of some options of the `verdi setup` command, which load a value from
   the config and so require the config, are turned into partials such that
   they also are lazily evaluated. These changes should give a reduction in
   load time of `verdi` of the order of ~50 ms.
   
   A test of `verdi setup` had to be updated to explicitly provide a value
   for the email. This is because now the default is evaluated lazily, i.e.
   when the command is actually called in the test. At this point, there is
   no value for this config option and so the default is empty. Before, the
   default would be evaluated as soon as `aiida.cmdline.commands.cmd_setup`
   was imported, at which point an existing config would still contain
   these values, binding them to the default, even if the config would be
   reset afterwards before the test.

   

   danielhollas authored and sphuber committed Oct 11, 2023
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2. minor touchups

   

   sphuber committed Oct 11, 2023
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