problem
In the `spacemacs-base` distribution.
When the `git-enable-magit-todos-plugin`
layer variable is enabled.
Then the following message appears on startup:
>An error occurred while pre-configuring magit-todos in layer git (error: (void-variable spacemacs-evil-collection-allowed-list))
cause
The `spacemacs-evil-collection-allowed-list` variable
is assigned in the `git` layer.
But it's defined in the `spacemacs-evil` layer.
The `spacemacs-evil` layer isn't used by default
in the `spacemacs-base` distribution.
solution
Check that the `spacemacs-evil` layer is used
before adding to the variable.
b5fb7d5376