internal/rosa: lazy initialise all artifacts

This improves performance, though not as drastically as lazy initialising llvm.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/python.go

@@ -6,8 +6,7 @@ import (
 	"hakurei.app/internal/pkg"
 )
 
-// NewPython returns a [pkg.Artifact] containing an installation of Python.
-func (t Toolchain) NewPython() pkg.Artifact {
+func (t Toolchain) newPython() pkg.Artifact {
 	const (
 		version  = "3.14.2"
 		checksum = "7nZunVMGj0viB-CnxpcRego2C90X5wFsMTgsoewd5z-KSZY2zLuqaBwG-14zmKys"
@@ -34,9 +33,9 @@ func (t Toolchain) NewPython() pkg.Artifact {
 		"test_dbm_gnu",
 	}
 	return t.New("python-"+version, []pkg.Artifact{
-		t.NewMake(),
-		t.NewZlib(),
-		t.NewLibffi(),
+		t.Load(Make),
+		t.Load(Zlib),
+		t.Load(Libffi),
 	}, nil, []string{
 		"EXTRATESTOPTS=-j0 -x " + strings.Join(skipTests, " -x "),
 
@@ -63,3 +62,4 @@ make DESTDIR=/work install
 			pkg.TarGzip,
 		)))
 }
+func init() { artifactsF[Python] = Toolchain.newPython }