gnodet opened a new issue, #11399:
URL: https://github.com/apache/maven/issues/11399
## Description
When using `flatten-maven-plugin` with `updatePomFile=true` and
`<parent>expand</parent>`, Maven incorrectly detects a parent cycle during the
install phase.
## Error Message
```
Failed to execute goal
org.apache.maven.plugins:maven-install-plugin:3.1.4:install (default-install)
on project: Execution default-install of goal
org.apache.maven.plugins:maven-install-plugin:3.1.4:install failed:
org.apache.maven.api.services.ModelBuilderException: 1 problem was encountered
while building the effective model
[FATAL] The parents form a cycle: org.apache:apache:35 -> /path/to/pom.xml
-> org.apache:apache:35
```
## Reproduction
Create a POM with:
- A parent reference (e.g., `org.apache:apache:35`)
- `flatten-maven-plugin` configured with:
- `updatePomFile=true`
- `<parent>expand</parent>`
Run `mvn install` and the build fails with the cycle detection error.
## Root Cause
The consumer POM builder was using `Path` instead of `ModelSource` when
reading the flattened POM. This caused the cycle detector to incorrectly
identify a cycle because it couldn't properly resolve the parent relationship
context.
## Solution
Change the `PomArtifactTransformer` API to use `ModelSource` instead of
`Path`. The `ModelSource` includes the necessary context (base directory,
ModelLocator) to properly resolve parent POMs and avoid false cycle detection.
## Maven Version
Maven 4.0.x
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