diff --git a/internal/rosa/package/perl.az b/internal/rosa/package/perl.az
new file mode 100644
index 00000000..3554fa84
--- /dev/null
+++ b/internal/rosa/package/perl.az
@@ -0,0 +1,47 @@
+package perl {
+	description = "The Perl Programming language";
+	website = "https://www.perl.org";
+	anitya = 13599;
+	// odd-even versioning
+	anityaFallback = true;
+
+	version* = "5.42.2";
+	source = remoteTar {
+		url = "https://www.cpan.org/src/5.0/perl-"+version+".tar.gz";
+		checksum = "Me_xFfgkRnVyG0sE6a74TktK2OUq9Z1LVJNEu_9RdZG3S2fbjfzNiuk2SJqHAgbm";
+		compress = gzip;
+	};
+
+	// uses source tree as scratch space
+	writable = true;
+	chmod = true;
+	early = `
+echo 'print STDOUT "1..0 # Skip broken test\n";' > ext/Pod-Html/t/htmldir3.t
+chmod +w /system/bin && rm -f /system/bin/ps # perl does not like toybox ps
+`;
+
+	toyboxEarly = true;
+	exec = make {
+		omitDefaults = true;
+		inPlace = true;
+
+		configureName = "./Configure";
+		configure = {
+			"-des";
+			"Dprefix": "/system";
+			"Dcc": "clang";
+			"Dcflags": "--std=gnu99";
+			"Dldflags": `"${LDFLAGS:-''}"`;
+			"Doptimize": "'-O2 -fno-strict-aliasing'";
+			"Duseithreads";
+			"Duseshrplib";
+		};
+
+		check = [
+			"TEST_JOBS=" + jobsLE,
+			"test_harness",
+		];
+
+		install = `LD_LIBRARY_PATH="$PWD" ./perl -Ilib -I. installperl --destdir=/work`;
+	};
+}
diff --git a/internal/rosa/perl.go b/internal/rosa/perl.go
index 204022aa..965aad06 100644
--- a/internal/rosa/perl.go
+++ b/internal/rosa/perl.go
@@ -7,61 +7,6 @@ import (
 	"hakurei.app/internal/pkg"
 )
 
-func (t Toolchain) newPerl() (pkg.Artifact, string) {
-	const (
-		version  = "5.42.2"
-		checksum = "Me_xFfgkRnVyG0sE6a74TktK2OUq9Z1LVJNEu_9RdZG3S2fbjfzNiuk2SJqHAgbm"
-	)
-	return t.NewPackage("perl", version, newTar(
-		"https://www.cpan.org/src/5.0/perl-"+version+".tar.gz",
-		checksum,
-		pkg.TarGzip,
-	), &PackageAttr{
-		// uses source tree as scratch space
-		Writable: true,
-		Chmod:    true,
-
-		ScriptEarly: `
-echo 'print STDOUT "1..0 # Skip broken test\n";' > ext/Pod-Html/t/htmldir3.t
-chmod +w /system/bin && rm -f /system/bin/ps # perl does not like toybox ps
-`,
-
-		Flag: TEarly,
-	}, &MakeHelper{
-		OmitDefaults: true,
-		InPlace:      true,
-
-		ConfigureName: "./Configure",
-		Configure: []KV{
-			{"-des"},
-			{"Dprefix", "/system"},
-			{"Dcc", "clang"},
-			{"Dcflags", "--std=gnu99"},
-			{"Dldflags", `"${LDFLAGS:-''}"`},
-			{"Doptimize", "'-O2 -fno-strict-aliasing'"},
-			{"Duseithreads"},
-			{"Duseshrplib"},
-		},
-		Check: []string{
-			"TEST_JOBS=" + jobsLE,
-			"test_harness",
-		},
-		Install: `LD_LIBRARY_PATH="$PWD" ./perl -Ilib -I. installperl --destdir=/work`,
-	}), version
-}
-func init() {
-	native.mustRegister(Toolchain.newPerl, &Metadata{
-		Name:        "perl",
-		Description: "The Perl Programming language",
-		Website:     "https://www.perl.org/",
-
-		ID: 13599,
-
-		// odd-even versioning
-		latest: (*Versions).getStable,
-	})
-}
-
 // newViaPerlModuleBuild installs a perl module via Build.PL.
 func (t Toolchain) newViaPerlModuleBuild(
 	name, version string,
diff --git a/internal/rosa/state.go b/internal/rosa/state.go
index 6a0f4553..f52f99cb 100644
--- a/internal/rosa/state.go
+++ b/internal/rosa/state.go
@@ -678,6 +678,8 @@ func (ctx *evalContext) pf(
 		helper  Helper
 
 		inputs, runtimes azalea.Array
+
+		anityaFallback bool
 	)
 	if err = args.Apply(map[unique.Handle[azalea.Ident]]any{
 		k("description"): &meta.Description,
@@ -698,6 +700,8 @@ func (ctx *evalContext) pf(
 		k("exec"):    &helper,
 		k("inputs"):  &inputs,
 		k("runtime"): &runtimes,
+
+		k("anityaFallback"): &anityaFallback,
 	}); err != nil {
 		return
 	}
@@ -727,6 +731,9 @@ func (ctx *evalContext) pf(
 	}
 
 	meta.ID = int(anitya)
+	if anityaFallback {
+		meta.latest = (*Versions).getStable
+	}
 	var source pkg.Artifact
 	switch p := sourceA.(type) {
 	case pkg.Artifact: