diff --git a/internal/rosa/gnu.go b/internal/rosa/gnu.go
index c3c48680..603f23a6 100644
--- a/internal/rosa/gnu.go
+++ b/internal/rosa/gnu.go
@@ -635,7 +635,7 @@ func (t Toolchain) newFindutils() (pkg.Artifact, string) {
 		nil, "https://ftpmirror.gnu.org/gnu/findutils/findutils-"+version+".tar.xz",
 		mustDecode(checksum),
 	), &PackageAttr{
-		SourceKind: sourceTarXZ,
+		SourceKind: SourceKindTarXZ,
 		ScriptEarly: `
 echo '#!/bin/sh' > gnulib-tests/test-c32ispunct.sh
 echo 'int main(){return 0;}' > tests/xargs/test-sigusr.c
diff --git a/internal/rosa/gtk.go b/internal/rosa/gtk.go
index e88bced7..e1d2e75a 100644
--- a/internal/rosa/gtk.go
+++ b/internal/rosa/gtk.go
@@ -18,7 +18,7 @@ func (t Toolchain) newGLib() (pkg.Artifact, string) {
 			"/glib-"+version+".tar.xz",
 		mustDecode(checksum),
 	), &PackageAttr{
-		SourceKind: sourceTarXZ,
+		SourceKind: SourceKindTarXZ,
 
 		Paths: []pkg.ExecPath{
 			pkg.Path(fhs.AbsEtc.Append(
diff --git a/internal/rosa/libxml2.go b/internal/rosa/libxml2.go
index 20243d7a..6f48ebf0 100644
--- a/internal/rosa/libxml2.go
+++ b/internal/rosa/libxml2.go
@@ -17,7 +17,7 @@ func (t Toolchain) newLibxml2() (pkg.Artifact, string) {
 			"/libxml2-"+version+".tar.xz",
 		mustDecode(checksum),
 	), &PackageAttr{
-		SourceKind: sourceTarXZ,
+		SourceKind: SourceKindTarXZ,
 	}, (*MakeHelper)(nil),
 		Diffutils,
 		XZ,
diff --git a/internal/rosa/libxslt.go b/internal/rosa/libxslt.go
index 9f0c3d2b..c979694a 100644
--- a/internal/rosa/libxslt.go
+++ b/internal/rosa/libxslt.go
@@ -17,7 +17,7 @@ func (t Toolchain) newLibxslt() (pkg.Artifact, string) {
 			"/libxslt-"+version+".tar.xz",
 		mustDecode(checksum),
 	), &PackageAttr{
-		SourceKind: sourceTarXZ,
+		SourceKind: SourceKindTarXZ,
 	}, &MakeHelper{
 		// python libxml2 cyclic dependency
 		SkipCheck: true,
diff --git a/internal/rosa/rosa.go b/internal/rosa/rosa.go
index a28fd836..47ccddab 100644
--- a/internal/rosa/rosa.go
+++ b/internal/rosa/rosa.go
@@ -426,8 +426,8 @@ type Helper interface {
 }
 
 const (
-	// sourceTarXZ denotes a source tarball to be decompressed using [XZ].
-	sourceTarXZ = 1 + iota
+	// SourceKindTarXZ denotes a source tarball to be decompressed using [XZ].
+	SourceKindTarXZ = 1 + iota
 )
 
 // PackageAttr holds build-system-agnostic attributes.
@@ -546,7 +546,7 @@ func (t Toolchain) NewPackage(
 
 	var sourceSuffix string
 	switch attr.SourceKind {
-	case sourceTarXZ:
+	case SourceKindTarXZ:
 		sourceSuffix = ".tar.xz"
 		scriptEarly += `
 tar -C /usr/src/ -xf '/usr/src/` + name + `.tar.xz'