hashicorp/packer · error

NewBuildFromCloudPackerBuild: %w

Error message

NewBuildFromCloudPackerBuild: %w

What it means

Wraps a Build.AddArtifacts validation failure that occurs while converting a HashicorpCloudPacker20230101Build (fetched from HCP) into the local registry Build type. An artifact on the remote build record failed Image validation during conversion.

Source

Thrown at internal/hcp/registry/types.builds.go:52

	build := Build{
		ID:            src.ID,
		ComponentType: src.ComponentType,
		Platform:      src.Platform,
		RunUUID:       src.PackerRunUUID,
		Status:        *src.Status,
		Labels:        src.Labels,
	}

	var err error
	for _, artifact := range src.Artifacts {
		err = build.AddArtifacts(packerSDKRegistry.Image{
			ImageID:        artifact.ExternalIdentifier,
			ProviderName:   build.Platform,
			ProviderRegion: artifact.Region,
		})

		if err != nil {
			return nil, fmt.Errorf("NewBuildFromCloudPackerBuild: %w", err)
		}
	}

	return &build, nil
}

// MergeLabels merges the contents of data to the labels associated with the build.
// Duplicate keys will be updated to reflect the new value.
func (build *Build) MergeLabels(data map[string]string) {
	if data == nil {
		return
	}

	if build.Labels == nil {
		build.Labels = make(map[string]string)
	}

	for k, v := range data {

View on GitHub (pinned to eb36e3c3e4)

Solutions

1. Check the offending build's artifacts in HCP Packer for empty ExternalIdentifier/Region values and fix or remove them
2. Inspect the wrapped error (%w) to see which artifact field failed validation
3. Delete and re-create the malformed build record in HCP Packer if it cannot be corrected
4. Ensure the plugin version writing artifacts publishes valid identifiers

// Validate the cloud build record before conversion
for _, a := range src.Artifacts {
    if a.ExternalIdentifier == "" {
        return fmt.Errorf("artifact on build %s has empty ExternalIdentifier", src.ID)
    }
}

func validCloudArtifacts(src *models.HashicorpCloudPacker20230101Build) bool {
    for _, a := range src.Artifacts {
        if a.ExternalIdentifier == "" || a.Region == "" { return false }
    }
    return true
}

When it happens

Trigger: Called by CreateInitialBuildForVersion and populateVersion; for each artifact on the cloud build record, NewBuildFromCloudPackerBuild calls build.AddArtifacts with an Image built from artifact.ExternalIdentifier/Region — if Image.Validate fails (e.g. empty ImageID), the error is wrapped with this prefix.

Common situations: Remote HCP build records containing artifacts with empty external identifiers; malformed data in an existing bucket/version being populated; SDK/model changes leaving fields unset.

Related errors

• AddArtifacts: failed to add artifact to build %q: %w
• error retrieving version from HCP Packer Registry: %s
• error retrieving channel from HCP Packer Registry: %s
• there is no version associated with the channel %s
• the version %s is revoked and can not be used on Packer buil

AI-assisted analysis of hashicorp/packer@eb36e3c3e4 (2026-09-05). Data as JSON: /api/errors/ac349688152307cd. Report an issue: GitHub.