Trying Scalpel

[Guillaume Smet]

Hi,

I just merged a pull request to experiment with Scalpel, a potential replacement for GIB.

And also merged some additional PRs with additional fixes/tuning. And I'm still fighting some issues that impact CI. Sorry about that.

I'm still unsure if it's the right choice so experiments will continue next week. And hopefully, I won't have to revert the 10 PRs that will be necessary to get it right...

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Guillaume

[Guillaume Smet]

Now that I fixed a few issues we had, this PR is a good example of the benefits of Scalpel: https://github.com/quarkusio/quarkus/pull/54872 .

While we updated the BOM, it's able to actually determine which modules are affected by this particular BOM change (an update to the MariaDB driver) instead of building most of the tree and it only built these modules:

extensions/devservices/mariadb

extensions/reactive-mysql-client/deployment

extensions/jdbc/jdbc-mariadb/runtime

extensions/jdbc/jdbc-mariadb/deployment

integration-tests/jpa-mariadb

integration-tests/hibernate-orm-compatibility-5.6/mariadb

integration-tests/hibernate-orm-tenancy/datasource

integration-tests/hibernate-orm-tenancy/connection-resolver

integration-tests/hibernate-orm-tenancy/schema-mariadb

integration-tests/hibernate-orm-tenancy/connection-resolver-legacy-qualifiers

integration-tests/opentelemetry-jdbc-instrumentation

We might have to tweak it further (and maybe also implement the missing feature that makes us use GIB for the Quickstarts build) but it looks quite interesting to me.

And even when we use GIB for the quickstarts, it's more interesting than before as the list of artifacts we declare as modified as the input of the GIB build is a lot smaller than it used to be.

There is a good summary of the benefits of Scalpel here: https://github.com/maveniverse/scalpel#scalpel-vs-gib-gitflow-incremental-builder .

To be honest, the BOM case was the one I was the most interested in.

I will continue the experimentation until I'm reasonably confident it's safe.

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Guillaume