feat: migrate gguf parser to separate PR from oci

Signed-off-by: Christopher Phillips <32073428+spiffcs@users.noreply.github.com>

.gitignore

@@ -70,3 +70,5 @@ cosign.pub
 __pycache__/
 *.py[cod]
 *$py.class
+
+

internal/packagemetadata/names.go

@@ -122,6 +122,7 @@ var jsonTypes = makeJSONTypes(
 	jsonNames(pkg.TerraformLockProviderEntry{}, "terraform-lock-provider-entry"),
 	jsonNames(pkg.DotnetPackagesLockEntry{}, "dotnet-packages-lock-entry"),
 	jsonNames(pkg.CondaMetaPackage{}, "conda-metadata-entry", "CondaPackageMetadata"),
+	jsonNames(pkg.GGUFFileMetadata{}, "gguf-file-metadata", "GGUFFileMetadata"),
 )
 
 func expandLegacyNameVariants(names ...string) []string {

internal/task/package_tasks.go

@@ -37,6 +37,7 @@ import (
 	"github.com/anchore/syft/syft/pkg/cataloger/swipl"
 	"github.com/anchore/syft/syft/pkg/cataloger/terraform"
 	"github.com/anchore/syft/syft/pkg/cataloger/wordpress"
+	"github.com/anchore/syft/syft/pkg/cataloger/aiartifact"
 )
 
 const (
@@ -175,6 +176,7 @@ func DefaultPackageTaskFactories() Factories {
 		newSimplePackageTaskFactory(homebrew.NewCataloger, pkgcataloging.DirectoryTag, pkgcataloging.InstalledTag, pkgcataloging.ImageTag, "homebrew"),
 		newSimplePackageTaskFactory(conda.NewCondaMetaCataloger, pkgcataloging.DirectoryTag, pkgcataloging.InstalledTag, pkgcataloging.PackageTag, "conda"),
 		newSimplePackageTaskFactory(snap.NewCataloger, pkgcataloging.DirectoryTag, pkgcataloging.InstalledTag, pkgcataloging.ImageTag, "snap"),
+		newSimplePackageTaskFactory(aiartifact.NewGGUFCataloger, pkgcataloging.DirectoryTag, pkgcataloging.ImageTag, "ai-artifact", "model", "gguf", "ml"),
 
 		// deprecated catalogers ////////////////////////////////////////
 		// these are catalogers that should not be selectable other than specific inclusion via name or "deprecated" tag (to remain backwards compatible)

syft/format/internal/cyclonedxutil/helpers/component.go

@@ -42,6 +42,8 @@ func EncodeComponent(p pkg.Package, supplier string, locationSorter func(a, b fi
 	componentType := cyclonedx.ComponentTypeLibrary
 	if p.Type == pkg.BinaryPkg {
 		componentType = cyclonedx.ComponentTypeApplication
+	} else if p.Type == pkg.ModelPkg {
+		componentType = cyclonedx.ComponentTypeMachineLearningModel
 	}
 
 	return cyclonedx.Component{

syft/format/internal/cyclonedxutil/helpers/decoder.go

@@ -62,7 +62,7 @@ func collectPackages(component *cyclonedx.Component, s *sbom.SBOM, idMap map[str
 	switch component.Type {
 	case cyclonedx.ComponentTypeOS:
 	case cyclonedx.ComponentTypeContainer:
-	case cyclonedx.ComponentTypeApplication, cyclonedx.ComponentTypeFramework, cyclonedx.ComponentTypeLibrary:
+	case cyclonedx.ComponentTypeApplication, cyclonedx.ComponentTypeFramework, cyclonedx.ComponentTypeLibrary, cyclonedx.ComponentTypeMachineLearningModel:
 		p := decodeComponent(component)
 		idMap[component.BOMRef] = p
 		if component.BOMRef != "" {

syft/pkg/cataloger/aiartifact/cataloger.go

@@ -0,0 +1,16 @@
+/*
+Package aiartifact provides concrete Cataloger implementations for AI artifacts and machine learning models,
+including support for GGUF (GPT-Generated Unified Format) model files.
+*/
+package aiartifact
+
+import (
+	"github.com/anchore/syft/syft/pkg"
+	"github.com/anchore/syft/syft/pkg/cataloger/generic"
+)
+
+// NewGGUFCataloger returns a new cataloger instance for GGUF model files.
+func NewGGUFCataloger() pkg.Cataloger {
+	return generic.NewCataloger("gguf-cataloger").
+		WithParserByGlobs(parseGGUFModel, "**/*.gguf")
+}

syft/pkg/cataloger/aiartifact/package.go

@@ -0,0 +1,68 @@
+package aiartifact
+
+import (
+	"fmt"
+
+	"github.com/anchore/packageurl-go"
+	"github.com/anchore/syft/syft/file"
+	"github.com/anchore/syft/syft/pkg"
+)
+
+func newGGUFPackage(metadata *pkg.GGUFFileMetadata, locations ...file.Location) pkg.Package {
+	p := pkg.Package{
+		Name:      metadata.ModelName,
+		Version:   metadata.ModelVersion,
+		PURL:      packageURL(metadata),
+		Locations: file.NewLocationSet(locations...),
+		Type:      pkg.ModelPkg,
+		Licenses:  pkg.NewLicenseSet(),
+		Metadata:  *metadata,
+	}
+
+	// Add license to the package if present in metadata
+	if metadata.License != "" {
+		p.Licenses.Add(pkg.NewLicenseFromFields(metadata.License, "", nil))
+	}
+
+	p.SetID()
+
+	return p
+}
+
+// packageURL returns the PURL for the specific GGUF model package (see https://github.com/package-url/purl-spec)
+func packageURL(metadata *pkg.GGUFFileMetadata) string {
+	var qualifiers packageurl.Qualifiers
+
+	// Add model-specific qualifiers
+	if metadata.Architecture != "" {
+		qualifiers = append(qualifiers, packageurl.Qualifier{
+			Key:   "arch",
+			Value: metadata.Architecture,
+		})
+	}
+
+	if metadata.Quantization != "" && metadata.Quantization != "unknown" {
+		qualifiers = append(qualifiers, packageurl.Qualifier{
+			Key:   "quantization",
+			Value: metadata.Quantization,
+		})
+	}
+
+	if metadata.Parameters > 0 {
+		qualifiers = append(qualifiers, packageurl.Qualifier{
+			Key:   "parameters",
+			Value: fmt.Sprintf("%d", metadata.Parameters),
+		})
+	}
+
+	// Use mlmodel as the type for machine learning models in GGUF format
+	// This follows the PURL spec guidance for ML models
+	return packageurl.NewPackageURL(
+		"mlmodel",
+		"gguf",
+		metadata.ModelName,
+		metadata.ModelVersion,
+		qualifiers,
+		"",
+	).ToString()
+}

syft/pkg/cataloger/aiartifact/parse_gguf.go

@@ -0,0 +1,344 @@
+package aiartifact
+
+import (
+	"bytes"
+	"crypto/sha256"
+	"encoding/binary"
+	"encoding/json"
+	"fmt"
+	"io"
+	"path/filepath"
+	"regexp"
+	"strings"
+
+	"github.com/anchore/syft/internal/log"
+	"github.com/anchore/syft/syft/pkg"
+)
+
+// GGUF file format constants
+const (
+	ggufMagic   = 0x46554747 // "GGUF" in little-endian
+	maxKVPairs  = 10000      // Safety limit for KV pairs
+	maxKeyLen   = 65535      // Maximum key length
+	maxTensors  = 100000     // Safety limit for tensors
+	maxHeaderKV = 200        // Maximum KV pairs to include in Header map (to avoid bloat)
+)
+
+// GGUF value types (from GGUF spec)
+const (
+	ggufTypeUint8   = 0
+	ggufTypeInt8    = 1
+	ggufTypeUint16  = 2
+	ggufTypeInt16   = 3
+	ggufTypeUint32  = 4
+	ggufTypeInt32   = 5
+	ggufTypeFloat32 = 6
+	ggufTypeUint64  = 7
+	ggufTypeInt64   = 8
+	ggufTypeFloat64 = 9
+	ggufTypeBool    = 10
+	ggufTypeString  = 11
+	ggufTypeArray   = 12
+)
+
+// parseGGUFHeader parses the header of a GGUF file from raw bytes and extracts metadata
+func parseGGUFHeader(data []byte, location string) (*pkg.GGUFFileMetadata, error) {
+	reader := bytes.NewReader(data)
+	// Read magic number
+	var magic uint32
+	if err := binary.Read(reader, binary.LittleEndian, &magic); err != nil {
+		return nil, fmt.Errorf("failed to read magic number: %w", err)
+	}
+
+	if magic != ggufMagic {
+		return nil, fmt.Errorf("invalid GGUF magic number: 0x%08X", magic)
+	}
+
+	// Read version
+	var version uint32
+	if err := binary.Read(reader, binary.LittleEndian, &version); err != nil {
+		return nil, fmt.Errorf("failed to read version: %w", err)
+	}
+
+	// Read tensor count
+	var tensorCount uint64
+	if err := binary.Read(reader, binary.LittleEndian, &tensorCount); err != nil {
+		return nil, fmt.Errorf("failed to read tensor count: %w", err)
+	}
+
+	if tensorCount > maxTensors {
+		log.Warnf("GGUF file has suspicious tensor count: %d (max: %d)", tensorCount, maxTensors)
+		tensorCount = maxTensors
+	}
+
+	// Read metadata KV count
+	var kvCount uint64
+	if err := binary.Read(reader, binary.LittleEndian, &kvCount); err != nil {
+		return nil, fmt.Errorf("failed to read KV count: %w", err)
+	}
+
+	if kvCount > maxKVPairs {
+		log.Warnf("GGUF file has suspicious KV count: %d (max: %d)", kvCount, maxKVPairs)
+		return nil, fmt.Errorf("KV count exceeds safety limit: %d", kvCount)
+	}
+
+	// Parse metadata key-value pairs
+	kvMap := make(map[string]interface{})
+	truncated := false
+
+	for i := uint64(0); i < kvCount; i++ {
+		key, value, err := readKVPair(reader)
+		if err != nil {
+			log.Warnf("failed to read KV pair %d: %v", i, err)
+			truncated = true
+			break
+		}
+		if len(kvMap) < maxHeaderKV {
+			kvMap[key] = value
+		} else {
+			truncated = true
+		}
+	}
+
+	// Extract common metadata fields
+	metadata := &pkg.GGUFFileMetadata{
+		ModelFormat:     "gguf",
+		GGUFVersion:     version,
+		TensorCount:     tensorCount,
+		Header:          kvMap,
+		TruncatedHeader: truncated,
+	}
+
+	// Extract known fields from KV map and remove them to avoid duplication in Header
+	if arch, ok := kvMap["general.architecture"].(string); ok {
+		metadata.Architecture = arch
+		delete(kvMap, "general.architecture")
+	}
+
+	if name, ok := kvMap["general.name"].(string); ok {
+		metadata.ModelName = name
+		delete(kvMap, "general.name")
+	} else {
+		// Fall back to filename if general.name not present
+		filename := filepath.Base(location)
+		metadata.ModelName = strings.TrimSuffix(filename, filepath.Ext(filename))
+	}
+
+	if license, ok := kvMap["general.license"].(string); ok {
+		metadata.License = license
+		delete(kvMap, "general.license")
+	}
+
+	if version, ok := kvMap["general.version"].(string); ok {
+		metadata.ModelVersion = version
+		delete(kvMap, "general.version")
+	} else {
+		metadata.ModelVersion = "unknown"
+	}
+
+	// Extract parameters count if present
+	if params, ok := kvMap["general.parameter_count"].(uint64); ok {
+		metadata.Parameters = params
+		delete(kvMap, "general.parameter_count")
+	}
+
+	// Try to infer quantization from general.quantization or from filename
+	if quant, ok := kvMap["general.quantization"].(string); ok {
+		metadata.Quantization = quant
+		delete(kvMap, "general.quantization")
+	} else if quantizedBy, ok := kvMap["general.quantized_by"].(string); ok && quantizedBy != "" {
+		// If quantized but no explicit quantization field, try to extract from filename
+		metadata.Quantization = inferQuantizationFromFilename(location)
+		// Note: we keep general.quantized_by in Header since it's not directly mapped to a field
+	} else {
+		metadata.Quantization = "unknown"
+	}
+
+	// Compute hash of metadata for stable identifier
+	metadata.Hash = computeMetadataHash(metadata)
+
+	return metadata, nil
+}
+
+// readKVPair reads a single key-value pair from the GGUF header
+func readKVPair(reader io.Reader) (string, interface{}, error) {
+	// Read key length
+	var keyLen uint64
+	if err := binary.Read(reader, binary.LittleEndian, &keyLen); err != nil {
+		return "", nil, fmt.Errorf("failed to read key length: %w", err)
+	}
+
+	if keyLen > maxKeyLen {
+		return "", nil, fmt.Errorf("key length exceeds maximum: %d", keyLen)
+	}
+
+	// Read key
+	keyBytes := make([]byte, keyLen)
+	if _, err := io.ReadFull(reader, keyBytes); err != nil {
+		return "", nil, fmt.Errorf("failed to read key: %w", err)
+	}
+	key := string(keyBytes)
+
+	// Read value type
+	var valueType uint32
+	if err := binary.Read(reader, binary.LittleEndian, &valueType); err != nil {
+		return "", nil, fmt.Errorf("failed to read value type: %w", err)
+	}
+
+	// Read value based on type
+	value, err := readValue(reader, valueType)
+	if err != nil {
+		return "", nil, fmt.Errorf("failed to read value for key %s: %w", key, err)
+	}
+
+	return key, value, nil
+}
+
+// readValue reads a value based on its type
+func readValue(reader io.Reader, valueType uint32) (interface{}, error) {
+	switch valueType {
+	case ggufTypeUint8:
+		var v uint8
+		err := binary.Read(reader, binary.LittleEndian, &v)
+		return v, err
+	case ggufTypeInt8:
+		var v int8
+		err := binary.Read(reader, binary.LittleEndian, &v)
+		return v, err
+	case ggufTypeUint16:
+		var v uint16
+		err := binary.Read(reader, binary.LittleEndian, &v)
+		return v, err
+	case ggufTypeInt16:
+		var v int16
+		err := binary.Read(reader, binary.LittleEndian, &v)
+		return v, err
+	case ggufTypeUint32:
+		var v uint32
+		err := binary.Read(reader, binary.LittleEndian, &v)
+		return v, err
+	case ggufTypeInt32:
+		var v int32
+		err := binary.Read(reader, binary.LittleEndian, &v)
+		return v, err
+	case ggufTypeFloat32:
+		var v float32
+		err := binary.Read(reader, binary.LittleEndian, &v)
+		return v, err
+	case ggufTypeUint64:
+		var v uint64
+		err := binary.Read(reader, binary.LittleEndian, &v)
+		return v, err
+	case ggufTypeInt64:
+		var v int64
+		err := binary.Read(reader, binary.LittleEndian, &v)
+		return v, err
+	case ggufTypeFloat64:
+		var v float64
+		err := binary.Read(reader, binary.LittleEndian, &v)
+		return v, err
+	case ggufTypeBool:
+		var v uint8
+		err := binary.Read(reader, binary.LittleEndian, &v)
+		return v != 0, err
+	case ggufTypeString:
+		return readString(reader)
+	case ggufTypeArray:
+		return readArray(reader)
+	default:
+		return nil, fmt.Errorf("unknown value type: %d", valueType)
+	}
+}
+
+// readString reads a length-prefixed UTF-8 string
+func readString(reader io.Reader) (string, error) {
+	var length uint64
+	if err := binary.Read(reader, binary.LittleEndian, &length); err != nil {
+		return "", fmt.Errorf("failed to read string length: %w", err)
+	}
+
+	if length > maxKeyLen {
+		return "", fmt.Errorf("string length exceeds maximum: %d", length)
+	}
+
+	strBytes := make([]byte, length)
+	if _, err := io.ReadFull(reader, strBytes); err != nil {
+		return "", fmt.Errorf("failed to read string: %w", err)
+	}
+
+	return string(strBytes), nil
+}
+
+// readArray reads an array value
+func readArray(reader io.Reader) (interface{}, error) {
+	// Read array element type
+	var elemType uint32
+	if err := binary.Read(reader, binary.LittleEndian, &elemType); err != nil {
+		return nil, fmt.Errorf("failed to read array element type: %w", err)
+	}
+
+	// Read array length
+	var length uint64
+	if err := binary.Read(reader, binary.LittleEndian, &length); err != nil {
+		return nil, fmt.Errorf("failed to read array length: %w", err)
+	}
+
+	if length > 1000 {
+		// Limit array size to avoid memory issues
+		return nil, fmt.Errorf("array length too large: %d", length)
+	}
+
+	// Read array elements
+	var elements []interface{}
+	for i := uint64(0); i < length; i++ {
+		value, err := readValue(reader, elemType)
+		if err != nil {
+			return nil, fmt.Errorf("failed to read array element %d: %w", i, err)
+		}
+		elements = append(elements, value)
+	}
+
+	return elements, nil
+}
+
+// inferQuantizationFromFilename attempts to extract quantization info from filename
+func inferQuantizationFromFilename(filename string) string {
+	// Common quantization patterns: Q4_K_M, IQ4_NL, Q5_K_S, etc.
+	quantPattern := regexp.MustCompile(`[IQ]\d+_[A-Z_]+`)
+	if match := quantPattern.FindString(filename); match != "" {
+		return match
+	}
+	return "unknown"
+}
+
+// computeMetadataHash computes a stable hash of the metadata for use as a global identifier
+func computeMetadataHash(metadata *pkg.GGUFFileMetadata) string {
+	// Create a stable representation of the metadata
+	hashData := struct {
+		Format       string
+		Name         string
+		Version      string
+		Architecture string
+		GGUFVersion  uint32
+		TensorCount  uint64
+	}{
+		Format:       metadata.ModelFormat,
+		Name:         metadata.ModelName,
+		Version:      metadata.ModelVersion,
+		Architecture: metadata.Architecture,
+		GGUFVersion:  metadata.GGUFVersion,
+		TensorCount:  metadata.TensorCount,
+	}
+
+	// Marshal to JSON for stable hashing
+	jsonBytes, err := json.Marshal(hashData)
+	if err != nil {
+		log.Warnf("failed to marshal metadata for hashing: %v", err)
+		return ""
+	}
+
+	// Compute SHA256 hash
+	hash := sha256.Sum256(jsonBytes)
+	return fmt.Sprintf("%x", hash[:8]) // Use first 8 bytes (16 hex chars)
+}
+

syft/pkg/cataloger/aiartifact/parse_gguf_model.go

@@ -0,0 +1,68 @@
+package aiartifact
+
+import (
+	"context"
+	"fmt"
+	"io"
+
+	"github.com/anchore/syft/internal"
+	"github.com/anchore/syft/internal/log"
+	"github.com/anchore/syft/internal/unknown"
+	"github.com/anchore/syft/syft/artifact"
+	"github.com/anchore/syft/syft/file"
+	"github.com/anchore/syft/syft/pkg"
+	"github.com/anchore/syft/syft/pkg/cataloger/generic"
+)
+
+// parseGGUFModel parses a GGUF model file and returns the discovered package.
+func parseGGUFModel(_ context.Context, _ file.Resolver, _ *generic.Environment, reader file.LocationReadCloser) ([]pkg.Package, []artifact.Relationship, error) {
+	defer internal.CloseAndLogError(reader, reader.Location.Path())
+
+	// Read header (we'll read a reasonable amount to parse the header without reading entire file)
+	// GGUF headers are typically < 1MB, but we'll use a 10MB limit to be safe
+	const maxHeaderSize = 10 * 1024 * 1024
+	limitedReader := io.LimitReader(reader, maxHeaderSize)
+
+	// We need to buffer the data because we need to check magic and parse
+	headerData := make([]byte, 0, 8192) // Start with 8KB buffer
+	buf := make([]byte, 8192)
+	for {
+		n, err := limitedReader.Read(buf)
+		if n > 0 {
+			headerData = append(headerData, buf[:n]...)
+		}
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return nil, nil, fmt.Errorf("error reading file: %w", err)
+		}
+		// Stop if we've read enough for a reasonable header
+		if len(headerData) > maxHeaderSize {
+			log.Warnf("GGUF header at %s exceeds max size, truncating", reader.Location.Path())
+			break
+		}
+	}
+
+	// Check if this is actually a GGUF file
+	if len(headerData) < 4 {
+		return nil, nil, fmt.Errorf("file too small to be a valid GGUF file")
+	}
+
+	// Parse the GGUF header
+	metadata, err := parseGGUFHeader(headerData, reader.Location.Path())
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to parse GGUF file: %w", err)
+	}
+
+	// Create package from metadata
+	p := newGGUFPackage(
+		metadata,
+		reader.Location.WithAnnotation(pkg.EvidenceAnnotationKey, pkg.PrimaryEvidenceAnnotation),
+	)
+
+	return []pkg.Package{p}, nil, unknown.IfEmptyf([]pkg.Package{p}, "unable to parse GGUF file")
+}
+
+// integrity check
+var _ generic.Parser = parseGGUFModel

syft/pkg/gguf.go

@@ -0,0 +1,47 @@
+package pkg
+
+// GGUFFileMetadata represents metadata extracted from a GGUF (GPT-Generated Unified Format) model file.
+// GGUF is a binary file format used for storing model weights for the GGML library, designed for fast
+// loading and saving of models, particularly quantized large language models.
+type GGUFFileMetadata struct {
+	// ModelFormat is always "gguf"
+	ModelFormat string `json:"modelFormat" cyclonedx:"modelFormat"`
+
+	// ModelName is the name of the model (from general.name or filename)
+	ModelName string `json:"modelName" cyclonedx:"modelName"`
+
+	// ModelVersion is the version of the model (if available in header, else "unknown")
+	ModelVersion string `json:"modelVersion,omitempty" cyclonedx:"modelVersion"`
+
+	// FileSize is the size of the GGUF file in bytes (best-effort if available from resolver)
+	FileSize int64 `json:"fileSize,omitempty" cyclonedx:"fileSize"`
+
+	// Hash is a content hash of the metadata (for stable global identifiers across remotes)
+	Hash string `json:"hash,omitempty" cyclonedx:"hash"`
+
+	// License is the license identifier (from general.license if present)
+	License string `json:"license,omitempty" cyclonedx:"license"`
+
+	// GGUFVersion is the GGUF format version (e.g., 3)
+	GGUFVersion uint32 `json:"ggufVersion" cyclonedx:"ggufVersion"`
+
+	// Architecture is the model architecture (from general.architecture, e.g., "qwen3moe", "llama")
+	Architecture string `json:"architecture,omitempty" cyclonedx:"architecture"`
+
+	// Quantization is the quantization type (e.g., "IQ4_NL", "Q4_K_M")
+	Quantization string `json:"quantization,omitempty" cyclonedx:"quantization"`
+
+	// Parameters is the number of model parameters (if present in header)
+	Parameters uint64 `json:"parameters,omitempty" cyclonedx:"parameters"`
+
+	// TensorCount is the number of tensors in the model
+	TensorCount uint64 `json:"tensorCount" cyclonedx:"tensorCount"`
+
+	// Header contains the remaining key-value pairs from the GGUF header that are not already
+	// represented as typed fields above. This preserves additional metadata fields for reference
+	// (namespaced with general.*, llama.*, etc.) while avoiding duplication.
+	Header map[string]interface{} `json:"header,omitempty" cyclonedx:"header"`
+
+	// TruncatedHeader indicates if the header was truncated during parsing (for very large headers)
+	TruncatedHeader bool `json:"truncatedHeader,omitempty" cyclonedx:"truncatedHeader"`
+}

syft/pkg/type.go

@@ -50,6 +50,7 @@ const (
 	TerraformPkg            Type = "terraform"
 	WordpressPluginPkg      Type = "wordpress-plugin"
 	HomebrewPkg             Type = "homebrew"
+	ModelPkg                Type = "model"
 )
 
 // AllPkgs represents all supported package types
@@ -94,6 +95,7 @@ var AllPkgs = []Type{
 	TerraformPkg,
 	WordpressPluginPkg,
 	HomebrewPkg,
+	ModelPkg,
 }
 
 // PackageURLType returns the PURL package type for the current package.
@@ -170,6 +172,8 @@ func (t Type) PackageURLType() string {
 		return "wordpress-plugin"
 	case HomebrewPkg:
 		return "homebrew"
+	case ModelPkg:
+		return "generic/model"
 	default:
 		// TODO: should this be a "generic" purl type instead?
 		return ""
@@ -258,6 +262,8 @@ func TypeByName(name string) Type {
 		return WordpressPluginPkg
 	case "homebrew":
 		return HomebrewPkg
+	case "model":
+		return ModelPkg
 	default:
 		return UnknownPkg
 	}