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Post release notes to Slack on tag push - #505
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Sends the annotated tag message as the release announcement whenever a vX.Y.Z tag is pushed. Can also be run manually for an existing tag.
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Caltech mail requires OAuth2 with Duo, which a workflow cannot complete, so announce releases through a Slack incoming webhook instead. The message is still the annotated tag message.
prkrtg
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mikelangmayr
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Oct 30, 2026
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Summary
Adds
.github/workflows/release-slack.yml, which posts a release announcement to Slack whenever avX.Y.Ztag is pushed.gen_version.cmake(Update to put the tag into the binaries #490) only picks up annotated tags anyway.workflow_dispatch) for an existing tag. Use this to announcev1.10.0, which was pushed before this workflow existed.This replaces the email approach from the first commit. Caltech's Microsoft 365 SMTP requires OAuth2 with Duo, which a workflow can't complete.
Setup required before merging
Repository secret:
SLACK_WEBHOOK_URL: incoming webhook URL for the channel to post toUntil this is set, the workflow will fail on every tag push.
Test plan
SLACK_WEBHOOK_URLtag: v1.10.0and confirm the message appears in the channel