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Launchpad builds charm recipes and uploads them to Charmhub on your behalf. Up until now, the uploads were authorized via Candid. Charmhub is retiring Candid and moving to Ubuntu One SSO, which is the same sign-on service that Launchpad already uses for snap recipes. 

We have updated Launchpad to use the new flow. When you authorize a charm recipe, you will now be taken to Ubuntu SSO instead of Candid to authenticate. The rest of the process, building and uploading, remains unchanged.

What you need to do:

You do not need to make any changes right now. 

Please note:

• Recipes which were already authorized prior to this change will keep uploading with their existing credentials.
• The new flow will apply the next time you authorize a recipe — either when creating a new charm recipe, or when re-authorizing an existing recipe.
• Authorizations last up to a year, which is the maximum that Charmhub allows.

If you run into any issues while authorizing a recipe or uploading a charm, please let us know by contacting us via Matrix: #launchpad:ubuntu.com or asking a question.