diff --git a/internal/rosa/kernel.go b/internal/rosa/kernel.go
index 5aef20e..e9c9dee 100644
--- a/internal/rosa/kernel.go
+++ b/internal/rosa/kernel.go
@@ -4,35 +4,40 @@ import "hakurei.app/internal/pkg"
 
 const kernelVersion = "6.12.73"
 
+var kernelSource = pkg.NewHTTPGetTar(
+	nil, "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/"+
+		"snapshot/linux-"+kernelVersion+".tar.gz",
+	mustDecode("29oUBJKF1ULIv1-XQLpEUUc3LgjUSmyvOSskG37MYUcBlBjMk7RcbCTLrD7UfSM6"),
+	pkg.TarGzip,
+)
+
 func (t Toolchain) newKernelSource() pkg.Artifact {
-	const checksum = "29oUBJKF1ULIv1-XQLpEUUc3LgjUSmyvOSskG37MYUcBlBjMk7RcbCTLrD7UfSM6"
 	return t.New("kernel-"+kernelVersion+"-src", 0, nil, nil, nil, `
 mkdir -p /work/usr/src/
 cp -r /usr/src/linux /work/usr/src/
 chmod -R +w /work/usr/src/linux/
-`, pkg.Path(AbsUsrSrc.Append("linux"), false, pkg.NewHTTPGetTar(
-		nil, "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/"+
-			"snapshot/linux-"+kernelVersion+".tar.gz",
-		mustDecode(checksum),
-		pkg.TarGzip,
-	)))
+`, pkg.Path(AbsUsrSrc.Append("linux"), false, kernelSource))
 }
 func init() { artifactsF[KernelSource] = Toolchain.newKernelSource }
 
 func (t Toolchain) newKernelHeaders() pkg.Artifact {
-	return t.New("kernel-headers-"+kernelVersion, TEarly, []pkg.Artifact{
-		t.Load(Make),
-		t.Load(Rsync),
+	return t.NewViaMake("kernel-headers", kernelVersion, kernelSource, &MakeAttr{
+		SkipConfigure: true,
 
-		t.Load(KernelSource),
-	}, nil, nil, `
-cd /usr/src/linux
-make \
-	"-j$(nproc)" \
-	LLVM=1 \
-	HOSTLDFLAGS="${LDFLAGS}" \
-	INSTALL_HDR_PATH=/work/system \
-	headers_install
-`)
+		SkipCheck: true,
+		Make: []string{
+			"-f /usr/src/kernel-headers/Makefile",
+			"O=/tmp/kbuild",
+			"LLVM=1",
+			`HOSTLDFLAGS="${LDFLAGS}"`,
+			"INSTALL_HDR_PATH=/work/system",
+			"headers_install",
+		},
+		ScriptInstall: "\n",
+
+		Flag: TEarly,
+	},
+		t.Load(Rsync),
+	)
 }
 func init() { artifactsF[KernelHeaders] = Toolchain.newKernelHeaders }