Release a nightly

A nightly is cheap to make and impossible to take back: its notes are public the moment the tag moves, and installed builds update to it on their own. So the work is mostly checks, done before anything leaves the machine.

Find the project's nightly instructions

Before anything else, find where the project describes its nightly:

• the workflow the tag triggers (for example .github/workflows/nightly.yml; its header comment usually names the steps),
• the notes folder's README (for example releases/nightly/README.md),
• the release-writing instructions' nightly section (releases/WRITING.md).

They settle the tag's name, where the notes live and what they are named, how the build picks the notes, and which platforms the build makes. If there are none, stop and ask how nightlies are released; do not invent a tag or a notes format.