This is the UI you see when you type ui into ucm.

🔔 You should only need to run the UI development server if you're contributing to the UI. If you just want to run the UI to see your Unison codebase, it should either come pre-installed with ucm or if you built from source it can be downloaded with a script: ./dev-ui-install.hs from the unison repository (Running Unison).

1. Start ucm (the executable is unison instead of ucm if you built the unison repository from source) in headless mode: ucm headless, and copy the API URL (this URL is uniquely generated by ucm at start-up) from the ucm start-up output (ucm also outputs a UI URL, but this isn't used when developing for the UI/running the UI from this repository).

2. Make sure the latest dependencies are installed with by running npm install followed by npm run ui-core-install.

3. Start the dev server with: API_URL="<API URL FROM UCM>" npm start

4. Visit https://localhost:1234 in a browser.

💡 Set the environment variable ELM_DEBUG=1 before starting the dev server to enable Elm's time-travelling debugger.

This depends on the ui-core package via elm-git-install. That package includes both the Unison design system, and a core set of components for working with and rendering Unison definitions and namespaces.

The UI Core dependency can be updated to its latest version with this command:

npm run ui-core-update

To install a specific sha:

npm run ui-core-install -- [SOME_UI_CORE_SHA]

To install with a specific repo & sha (e.g. forked repo):

npm run ui-core-install -- [SOME_UI_CORE_SHA] [SOME_UI_CORE_URL]
# e.g. SOME_UI_CORE_URL=https://github.com/some-user/ui-core

Code of conduct