apk: plumb more replaces_priority settings

pkg/apk/install_test.go

@@ -497,5 +497,8 @@ replaces = {{ $dep }}
 {{- if .ProviderPriority }}
 provider_priority = {{ .Dependencies.ProviderPriority }}
 {{- end }}
+{{- if .ReplacesPriority }}
+replaces_priority = {{ .Dependencies.ReplacesPriority }}
+{{- end }}
 datahash = {{.DataHash}}
 `

pkg/apk/installed.go

@@ -314,6 +314,12 @@ func ParseInstalled(installed io.Reader) ([]*InstalledPackage, error) { //nolint
 				return nil, fmt.Errorf("cannot parse provider priority field %s: %w", val, err)
 			}
 			pkg.ProviderPriority = priority
+		case "q":
+			priority, err := strconv.ParseUint(val, 10, 64)
+			if err != nil {
+				return nil, fmt.Errorf("cannot parse replaces priority field %s: %w", val, err)
+			}
+			pkg.ReplacesPriority = priority
 		case "C":
 			// Handle SHA1 checksums:
 			if strings.HasPrefix(val, "Q1") {

pkg/apk/package.go

@@ -47,6 +47,7 @@ func PackageToInstalled(pkg *Package) (out []string) {
 	out = append(out, fmt.Sprintf("S:%d", pkg.Size))
 	out = append(out, fmt.Sprintf("I:%d", pkg.InstalledSize))
 	out = append(out, fmt.Sprintf("k:%d", pkg.ProviderPriority))
+	out = append(out, fmt.Sprintf("q:%d", pkg.ReplacesPriority))
 	if len(pkg.Checksum) > 0 {
 		out = append(out, fmt.Sprintf("C:%s", pkg.ChecksumString()))
 	}
@@ -79,6 +80,7 @@ type Package struct {
 	Size             uint64 `ini:"size"`
 	InstalledSize    uint64
 	ProviderPriority uint64 `ini:"provider_priority"`
+	ReplacesPriority uint64 `ini:"replaces_priority"`
 	BuildTime        time.Time
 	BuildDate        int64    `ini:"builddate"`
 	RepoCommit       string   `ini:"commit"`