Installing language providers

Open Settings → Editor → Language providers. English and Khmer are bundled; other catalog providers can be downloaded or removed independently.

Installation is global, but language selection is per project. After installing an optional provider:

1. open a Typst document;
2. select the language item in the status bar;
3. choose the language for its ambiguous script in Document Languages;
4. select Apply.

The selection is stored in portable .typsastra/config.json. Scripts with one available language resolve automatically and are omitted from the dialog. An installed provider that is not selected for an ambiguous script does not spellcheck or complete that script. A selected provider is loaded lazily only when its language is detected in Typst prose.

Support labels retain their existing meaning: Basic provides dictionary spellcheck, Enhanced adds language-specific boundaries, and Deep may add segmentation, completion, and a tested script-editing policy.