The withEnv step should accept a java.util.{{Map}}, which is the natural form of an environment variable list. It expects a java.util.List, and dies with

      java.lang.UnsupportedOperationException: must specify $class with an implementation of interface java.util.List
      	at org.jenkinsci.plugins.structs.describable.DescribableModel.resolveClass(DescribableModel.java:503)
        ...
      Caused: java.lang.IllegalArgumentException: Could not instantiate {overrides={}} for EnvStep(overrides: String[])
        ...
      

      if a Map is passed.

          [JENKINS-54930] withEnv should accept Map as well as List

          Devin Nusbaum added a comment -

          I ran into this issue and JENKINS-46124 while looking into something related to JENKINS-28510. I am going to close this as a dupe of the former because that issue has some comments and was filed earlier.

          Devin Nusbaum added a comment - I ran into this issue and JENKINS-46124 while looking into something related to JENKINS-28510 . I am going to close this as a dupe of the former because that issue has some comments and was filed earlier.

          Joseph Petersen (old) added a comment - Created  https://github.com/jenkinsci/workflow-basic-steps-plugin/pull/105

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            ringerc Craig Ringer
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