diff --git a/internal/rosa/kernel.go b/internal/rosa/kernel.go
deleted file mode 100644
index e778ca29..00000000
--- a/internal/rosa/kernel.go
+++ /dev/null
@@ -1,51 +0,0 @@
-package rosa
-
-import "hakurei.app/internal/pkg"
-
-func (t Toolchain) newFirmware() (pkg.Artifact, string) {
-	const (
-		version  = "20260410"
-		checksum = "J8PdQlGqwrivpskPzbL6xacqR6mlKtXpe5RpzFfVzKPAgG81ZRXsc3qrxwdGJbil"
-	)
-	return t.NewPackage("firmware", version, newFromGitLab(
-		"gitlab.com",
-		"kernel-firmware/linux-firmware",
-		version,
-		checksum,
-	), &PackageAttr{
-		// dedup creates temporary file
-		Writable: true,
-		// does not use configure
-		EnterSource: true,
-
-		Env: []string{
-			"HOME=/proc/nonexistent",
-		},
-	}, &MakeHelper{
-		OmitDefaults:  true,
-		SkipConfigure: true,
-		InPlace:       true,
-
-		Make: []string{
-			"DESTDIR=/work/system",
-			"install-zst",
-		},
-		SkipCheck: true, // requires pre-commit
-		Install:   "make " + jobsFlagE + " DESTDIR=/work/system dedup",
-	},
-		Parallel,
-		Rdfind,
-		Zstd,
-		Findutils,
-		Coreutils,
-	), version
-}
-func init() {
-	native.mustRegister(Toolchain.newFirmware, &Metadata{
-		Name:        "firmware",
-		Description: "firmware blobs for use with the Linux kernel",
-		Website:     "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/",
-
-		ID: 141464,
-	})
-}
diff --git a/internal/rosa/package/firmware.az b/internal/rosa/package/firmware.az
new file mode 100644
index 00000000..b35658af
--- /dev/null
+++ b/internal/rosa/package/firmware.az
@@ -0,0 +1,47 @@
+package firmware {
+	description = "firmware blobs for use with the Linux kernel";
+	website = "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git";
+	anitya = 141464;
+
+	version* = "20260410";
+	source = remoteGitLab {
+		domain = "gitlab.com";
+		suffix = "kernel-firmware/linux-firmware";
+		ref = version;
+		checksum = "J8PdQlGqwrivpskPzbL6xacqR6mlKtXpe5RpzFfVzKPAgG81ZRXsc3qrxwdGJbil";
+	};
+
+	// dedup creates temporary file
+	writable = true;
+
+	// does not use configure
+	enterSource = true;
+
+	env = [
+		"HOME=/proc/nonexistent",
+	];
+
+	exec = make {
+		omitDefaults = true;
+		skipConfigure = true;
+		inPlace = true;
+
+		make = [
+			"DESTDIR=/work/system",
+			"install-zst",
+		];
+
+		// requires pre-commit
+		skipCheck = true;
+
+		install = "make " + jobsFlagE + " DESTDIR=/work/system dedup";
+	};
+
+	inputs = [
+		parallel,
+		rdfind,
+		zstd,
+		findutils,
+		coreutils,
+	];
+}