{"record":{"id":"c7bc7ce441401ebf","repo":"GoogleContainerTools/skaffold","slug":"marshaling-new-configs-w","errorCode":null,"errorMessage":"marshaling new configs: %w","messagePattern":"marshaling new configs: %w","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pkg/skaffold/inspect/helper.go","lineNumber":83,"sourceCode":"\t\tvar parsed yamlv3.Node\n\t\terr := decoder.Decode(&parsed)\n\t\tif err == io.EOF {\n\t\t\tbreak\n\t\t}\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"unable to parse YAML: %w\", err)\n\t\t}\n\t\t// parsed content is a document so the `Content` slice has exactly one element\n\t\tsl = append(sl, parsed.Content[0])\n\t}\n\n\tfor i, cfg := range cfgs {\n\t\tsl[cfg.SourceIndex] = cfgs[i].SkaffoldConfig\n\t}\n\n\tnewCfgs, err := yaml.MarshalWithSeparator(sl)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"marshaling new configs: %w\", err)\n\t}\n\tif err := WriteFileFunc(filename, newCfgs); err != nil {\n\t\treturn fmt.Errorf(\"writing config file: %w\", err)\n\t}\n\treturn nil\n}\n","sourceCodeStart":65,"sourceCodeEnd":90,"githubUrl":"https://github.com/GoogleContainerTools/skaffold/blob/a1189de023efc32d4b8e11f395acc678aa555011/pkg/skaffold/inspect/helper.go#L65-L90","documentation":"After modifying the in-memory config set, marshalConfigSetForFile re-serializes all skaffold configs with yaml.MarshalWithSeparator before writing them back. If marshaling fails, the error \"marshaling new configs: %w\" is returned and the file is left untouched. This indicates the modified config structures cannot be represented as YAML by the skaffold marshaler.","triggerScenarios":"Calling `skaffold inspect` modify commands whose resulting SkaffoldConfig values fail yaml.MarshalWithSeparator (e.g. unsupported/nil field values produced by the modification logic).","commonSituations":"Modifying profiles or port-forward resources with values that don't round-trip through the skaffold YAML marshaller; a skaffold version bug where a newly added field lacks a marshaler mapping.","solutions":["Inspect the wrapped error to identify the offending field; fix the input flags/values passed to the inspect command.","Upgrade or downgrade skaffold — this often indicates an incompatibility between the CLI version and the config schema.","Edit skaffold.yaml manually instead of using the inspect modify command."],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":"var cfgs config.SkaffoldConfigSet\nif err := yaml.UnmarshalStrict(data, &cfgs); err != nil {\n    return err // configs must round-trip before modifying\n}","typeGuard":null,"tryCatchPattern":"if err := marshalConfigSetForFile(f, cfgs); err != nil {\n    if strings.Contains(err.Error(), \"marshaling new configs\") {\n        // leave original file intact, report marshal failure\n    }\n}","preventionTips":["Keep skaffold CLI version aligned with the skaffold.yaml schema version","Unmarshal-then-marshal round-trip test before applying modifications","Keep a backup of skaffold.yaml when using inspect modify commands"],"tags":["yaml","marshaling","config-file"],"backgroundTag":"yaml-marshaling-failed","analyzedSha":"a1189de023efc32d4b8e11f395acc678aa555011","analyzedAt":"2026-09-05T12:09:27.064Z","contentChangedAt":"2026-09-05T12:09:27.064Z","schemaVersion":2},"datasetVersion":"2026-09-12T17:17:11.597Z"}