Publish snapshot on merge to main branch about iron

[Iltotore]

We can trigger the release action on push to the main branch but I think it would spam too much. A better alternative is eventually nightly publishing aka publishing once a day (at night) only if the main branch (here dev/2.0) changed.

[gvolpe]

I do it on Redis4Cats and it's refreshing. You can forget about it once the tooling does it for you, in my case it's sbt-ci-release. The aim of the plugin is pretty clear:

This is an sbt plugin to help automate releases to Sonatype and Maven Central from GitHub Actions.

    - git tag pushes are published as regular releases to Maven Central
    - merge into main commits are published as -SNAPSHOT with a unique version number for every commit

AFAICS mill-ci-release has similar goals.

This is a Mill plugin modeled after the fantastic sbt-ci-release plugin which helps automate publishing to Sonatype from GitHub Actions with as little friction as possible. These are the key features of using the plugin.

    - A new git tag is published as a regular release
    - A merge is published as a SNAPSHOT release
    - Auto versioning based on git by [mill-vcs-version](https://github.com/lefou/mill-vcs-version)
    - A simple one-liner in CI to publish

What do you mean with spam too much?

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PS. Nightly publishing would be good to me too 👍🏽

[Iltotore]

What do you mean with spam too much?

I mean publish too much artifacts if a day is particularly active (multiple merges, multiple push etc...)

[gvolpe]

That's the idea of snapshots :)

[Iltotore]

I mean, even in other projects like Dotty, Scalameta (granted they are way more active than Iron), they only publish nightlies IIRC