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/perl.go

@@ -2,14 +2,13 @@ package rosa
 
 import "hakurei.app/internal/pkg"
 
-// NewPerl returns a [pkg.Artifact] containing an installation of perl.
-func (t Toolchain) NewPerl() pkg.Artifact {
+func (t Toolchain) newPerl() pkg.Artifact {
 	const (
 		version  = "5.42.0"
 		checksum = "2KR7Jbpk-ZVn1a30LQRwbgUvg2AXlPQZfzrqCr31qD5-yEsTwVQ_W76eZH-EdxM9"
 	)
 	return t.New("perl-"+version, []pkg.Artifact{
-		t.NewMake(),
+		t.Load(Make),
 	}, nil, nil, `
 chmod -R +w /usr/src/perl && cd /usr/src/perl
 
@@ -32,3 +31,4 @@ make DESTDIR=/work install
 		pkg.TarGzip,
 	)))
 }
+func init() { artifactsF[Perl] = Toolchain.newPerl }