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174 lines
5.0 KiB
Markdown
174 lines
5.0 KiB
Markdown
# Maintainers' Guide
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## Hotfixes
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Here lies an informal guide for making hotfix releases and deploying them to
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the network.
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Take [this PR][1], as an example. This constituted a great hotfix. It's a
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single commit, targeting a problem that existed on the network at the time.
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Here's it should be released and deployed OTA.
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[1]: https://github.com/urbit/urbit/pull/2025
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### If the thing is acceptable to merge, merge it to master
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Unless it's very trivial, it should probably have a single "credible looking"
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review from somebody else on it.
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You should avoid merging the PR in GitHub directly. Instead, use the
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`sh/merge-with-custom-msg` script -- it will produce a merge commit with
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message along the lines of:
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```
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Merge branch FOO (#PR_NUM)
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* FOO:
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bar: ...
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baz: ...
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Signed-off-by: SIGNER <signer@example.com>
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```
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We do this as it's nice to have the commit log information in the merge commit,
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which GitHub's "Merge PR" button doesn't do (at least by default).
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`sh/merge-with-custom-msg` performs some useful last-minute urbit-specific
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checks, as well.
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You might want to alias `sh/merge-with-custom-msg` locally, to make it easier
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to use. My .git/config contains the following, for example:
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```
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[alias]
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mu = !sh/merge-with-custom-msg
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```
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so that I can type e.g. `git mu origin/foo 1337`.
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### Prepare a release commit
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You should create Landscape or alternative pill builds, if or as appropriate
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(i.e., if anything in Landscape changed -- don't trust any compiled JS/CSS
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that's included in the commit), and commit these in a release commit.
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You should always create a solid pill, in particular, as it's convenient for
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tooling to be able to boot directly from a given release.
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If you're making a Vere release, just play it safe and update all the pills.
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### Tag the resulting commit
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What you should do here depends on the type of release being made.
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First, for Urbit OS releases:
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If it's a very trivial hotfix that you know isn't going to break
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anything, tag it as `urbit-os-vx.y.z`. Here 'x' refers to the product version
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(e.g. OS1, OS2..), 'y' to the continuity era in that version, and 'z' to an
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OTA patch counter. So for a hotfix version, you'll just want to increment 'z'.
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Use an annotated tag, i.e.
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```
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git tag -a urbit-os-vx.y.z
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```
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The tag format should look something like this:
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```
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urbit-os-vx.y.z
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This release will be pushed to the network as an over-the-air update.
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Release notes:
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[..]
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Contributions:
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[..]
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```
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You can get the "contributions" section by the shortlog between the
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last release and this release:
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```
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git log --pretty=short LAST_RELEASE.. | git shortlog
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```
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I originally tried to curate this list somewhat, but now just paste it
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verbatim. If it's too noisy, yell at your colleagues to improve their commit
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messages.
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Try to include a high-level summary of the changes in the "release notes"
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section. You should be able to do this by simply looking at the git log and
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skimming the commit descriptions (or perhaps copying some of them in verbatim).
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If the commit descriptions are too poor to easily do this, then again, yell at
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your fellow contributors to make them better in the future.
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If it's *not* a trivial hotfix, you should probably make any number of release
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candidate tags (e.g. `urbit-os-vx.y.z.rc1`, `urbit-os-vx.y.z.rc2`, ..), test
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them, and after you confirm one of them is good, tag the release as
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`urbit-os-vx.y.z`.
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For Vere releases:
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Tag the release as `urbit-vx.y.z`. The tag format should look something like
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this:
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```
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urbit-vx.y.z
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Release binaries:
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(linux64)
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https://bootstrap.urbit.org/urbit-vx.y.z-linux64.tgz
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(macOS)
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https://bootstrap.urbit.org/urbit-vx.y.z-darwin.tgz
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Release notes:
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[..]
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Contributions:
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[..]
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```
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The same schpeel re: release candidates applies here.
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Do not include implicit Urbit OS changes in Vere releases. This used to be
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done, historically, but shouldn't be any longer. If there are Urbit OS and
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Vere changes to be released, make two releases.
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### Deploy the update
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(**Note**: the following steps are automated by some other Tlon-internal
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tooling. Just ask `~nidsut-tomdun` for details.)
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For Urbit OS updates, this means copying the files into ~zod's %base desk. The
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changes will be synced to /~zod/kids and then propagated through other galaxies
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and stars to the rest of the network.
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For consistency, I create a release tarball and then rsync the files in.
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```
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$ wget https://github.com/urbit/urbit/archive/urbit-os-vx.y.z.tar.gz
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$ tar xzf urbit-os-vx.y.z.tar.gz
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$ herb zod -p hood -d "+hood/mount /=base="
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$ rsync -zr --delete urbit-urbit-os-vx.y.z/pkg/arvo/ zod/base
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$ herb zod -p hood -d "+hood/commit %base"
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```
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For Vere updates, this means simply shutting down each desired ship, installing
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the new binary, and restarting the pier with it.
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### Announce the update
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Post an announcement to urbit-dev. The tag annotation, basically, is fine here
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-- I usually add the %base hash (for Urbit OS releases) and the release binary
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URLs (for Vere releases). Check the urbit-dev archives for examples of these
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announcements.
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