Fwiw, the following branch allows rebuilding the maven-core tree without any change at all, i.e. if you do a subsequent build, none of the output files or jars is rewritten. https://github.com/gnodet/maven/commits/stale-compiler
There are still a few PR that needs to be merged and released in order to leverage that: * https://github.com/codehaus-plexus/modello/pull/116 * https://github.com/codehaus-plexus/plexus-containers/pull/46 * https://github.com/eclipse/sisu.mojos/pull/4 Subsequent builds using `mvn install -DskipTests` go from 29 seconds down to 16s (and 5s when using a hot mvnd) Le lun. 31 janv. 2022 à 08:30, Guillaume Nodet <gno...@apache.org> a écrit : > I was looking at why the maven builds are a bit slow and found out one of > the culprit is modello which overwrites its generated files even if there > are no changes: that cascades to recompiling the module, checking the style > again, making a new archive and then recompiling the dependant modules > aso... > That was fixed a few months ago with > https://github.com/codehaus-plexus/modello/pull/116 > Would it be possible to release modello to be able to incorporate the fix > and continue the work on optimization the build ? > > I'm willing to help in any way if that can actually speed up things... > > Cheers, > Guillaume > -- ------------------------ Guillaume Nodet
