[JENKINS-75072] Support documentation of EnvVar contributed by GitSCMExtension #3867
Description
As a Jenkins plugin developer, when I provide an implementation of the GitSCMExtension extension point with environment variables via the populateEnvironmentVariables method, I also need to be able to provide documentation.
Such documentation I would expect to contribute to the page under the "Pipeline Syntax" -> "Global Variable Reference" menu under the "env" pipeline step.
Actually Jenkins core lookup for a buildEnv.jelly or buildEnv.groovy resource in the classpath of the plugin that provides an entension of EnvironmentContributor or SCM.
Since the SCM implementation (GitSCM) is provided by the git-plugin, any buildEnv.groovy resource in the plugin where the implementation of GitSCMExtension is placed is not taken into account.
Originally reported by 
nfalco, imported from: Support documentation of EnvVar contributed by GitSCMExtension
- status: Open
- priority: Minor
- component(s): git-plugin
- resolution: Unresolved
- votes: 0
- watchers: 4
- imported: 2025-12-02
Raw content of original issue
As a Jenkins plugin developer, when I provide an implementation of the GitSCMExtension extension point with environment variables via the populateEnvironmentVariables method, I also need to be able to provide documentation. Such documentation I would expect to contribute to the page under the "Pipeline Syntax" -> "Global Variable Reference" menu under the "env" pipeline step.
Actually Jenkins core lookup for a buildEnv.jelly or buildEnv.groovy resource in the classpath of the plugin that provides an entension of EnvironmentContributor or SCM. Since the SCM implementation (GitSCM) is provided by the git-plugin, any buildEnv.groovy resource in the plugin where the implementation of GitSCMExtension is placed is not taken into account.