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Record the Maven 3.9.0 baseline in the README and site #442

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slachiewicz merged 1 commit into from
Aug 18, 2026
Merged

Record the Maven 3.9.0 baseline in the README and site #442

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8 changes: 5 additions & 3 deletions README.md
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Expand Up @@ -38,7 +38,7 @@ that element to point at its own `gh-pages` branch.

The parent POM covers the following areas:

- **Baselines**: Java 8 through the `javaVersion` property, Maven 3.6.3 as the minimum, and UTF-8 sources.
- **Baselines**: Java 8 through the `javaVersion` property, Maven 3.9.0 as the minimum, and UTF-8 sources.
- **Enforcer**: the Maven and JDK minimums, and a rule from `extra-enforcer-rules` that rejects a
dependency whose bytecode is newer than your compiler target.
- **Formatting**: Spotless with palantir-java-format, sorted POM files, and flexmark for Markdown.
Expand All @@ -48,15 +48,17 @@ The parent POM covers the following areas:
- **Reporting**: the `reporting` profile adds Javadoc, JXR, surefire, PMD/CPD, and taglist.
- **Releasing**: the `plexus-release` profile adds GPG signing, sources, and a source-release assembly,
and enables [Njord](https://maveniverse.eu/docs/njord/) to publish to Maven Central.
- **Version properties**: every managed plugin version has a `version.<artifactId>` property, so a child
can pin a different version without redeclaring the plugin.

For an explanation of each area, see the [project site](https://codehaus-plexus.github.io/plexus-pom/),
which also lists every
[managed plugin version](https://codehaus-plexus.github.io/plexus-pom/plugin-management.html).

## Requirements

To build a project that inherits this POM, you need Java 8 or later and Maven 3.6.3 or later. To release
one, you need Maven 3.9.0 or later.
To build a project that inherits this POM, you need Java 8 or later and Maven 3.9.0 or later. Version 27
raised the Maven minimum from 3.6.3; it applies to building the project, not to consuming its artifacts.

## Documentation

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2 changes: 1 addition & 1 deletion src/site/markdown/index.md
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Expand Up @@ -26,7 +26,7 @@ The following table lists the settings the parent POM fixes:
| Setting | Value |
|---|---|
| Java, through the `javaVersion` property | 8, which sets `maven.compiler.source`, `target`, and `release` |
| Minimum Maven to build | 3.6.3, or 3.9.0 to release |
| Minimum Maven to build | 3.9.0, raised from 3.6.3 in version 27 |
| Source encoding | UTF-8 |
| Annotation processing | Off, through `maven.compiler.proc=none` |

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