I was using the api add-on helpers ( Add some helpers to allow add-ons to install packages into the venv · ankitects/anki@bb1b289 · GitHub ) to install spaCy and their models to be used with my add-on. However, these (unsurprisingly) stopped working in 26.05. Is there a workaround for this?

Yeah… no, that’s not going to work. The solution pre uv launcher was for users to manually create a virtual environment and install spacy and relevant models, which was way too cumbersome. RIP AnkiMorphs.

Nothing prevents the add-on from bundling its own copy of pip/uv and using it for installing dependencies to some folder though?

Add-ons don’t choose the Python runtime they run in, so expecting each add-on to bundle and maintain its own package-management tooling is asking too much, imo. It’s not something I’m willing to do, at least.

[image] mortii: Add-ons don’t choose the Python runtime they run in, so expecting each add-on to bundle and maintain its own package-management tooling is asking too much For most add-ons, bundling dependencies at build time and modifying sys.path is enough (I have done that for dozens of add…

How should add-ons install Python dependencies in 26.05?

Anki Development

abdo June 17, 2026, 10:24am 2

You have to package any required modules with the add-on’s zip as was the case before the uv launcher: [Wiki] Bundling Python modules with add-ons

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How should add-ons install Python dependencies in 26.05?

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