t3code-nightly-bin packages upstream nightly releases for x86_64 and aarch64. Run t3code-nightly for the desktop or t3-nightly for the server CLI. The app launcher entry is T3 Code (Nightly). Optional Electron flags go in ~/.config/t3code-nightly-flags.conf (or under $XDG_CONFIG_HOME).

The package can be installed alongside t3code-bin, with separate binaries, icons, and desktop entries. Upstream still shares its application data and URL schemes between channels: installing both does not create isolated profiles.

The upstream watch accepts only vX.Y.Z-nightly.YYYYMMDD.N releases. Arch versions replace the hyphen with an underscore; downloads retain upstream's original tag and filenames. Both architecture checksums must be available before an update. A nightly is picked up once it is 30 minutes old, because upstream publishes the release before its AppImages finish uploading.