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/rsync.go

@@ -2,14 +2,13 @@ package rosa
 
 import "hakurei.app/internal/pkg"
 
-// NewRsync returns a [pkg.Artifact] containing an installation of rsync.
-func (t Toolchain) NewRsync() pkg.Artifact {
+func (t Toolchain) newRsync() pkg.Artifact {
 	const (
 		version  = "3.4.1"
 		checksum = "VBlTsBWd9z3r2-ex7GkWeWxkUc5OrlgDzikAC0pK7ufTjAJ0MbmC_N04oSVTGPiv"
 	)
 	return t.New("rsync-"+version, []pkg.Artifact{
-		t.NewMake(),
+		t.Load(Make),
 	}, nil, nil, `
 cd "$(mktemp -d)"
 /usr/src/rsync/configure --prefix=/system \
@@ -27,3 +26,4 @@ make DESTDIR=/work install
 		pkg.TarGzip,
 	)))
 }
+func init() { artifactsF[Rsync] = Toolchain.newRsync }