When setting any filetype suboption to null (or anything else guarded by
mkIf) it's value becomes:
{ extension = null; filename = null; pattern = null; }
Account for that case in mkIf condition so that the option would not
produce empty filetype definition.
This avoids having the option always "defined".
This also avoids luaLoader configuration in extra files by default.
Earlier `vim.loader.disable()` was always added to configs produced
by `files` option, effectively disabling luaLoader even if it was
explicitly enabled in a top-level configuration.
Moved `extraFiles` from `modules/output.nix` into its own file `modules/files.nix`.
Users should now assign text to a `text` attribute, however they could
also assign a file path to a `source` attribute instead.
The old method of directly assigning a string still works, and is
coerced to the new type along with a deprecation warning.
To enable some features (like adding tree-sitter queries) we need to add
files to specific directories in the runtime path (queries/lang/file.scm
for tree-sitter queries for example).
This commit adds support for specifying such files. You must be careful
to not have any collisions between `files` and `extraFiles`.
