internal/rosa/perl: Makefile.PL helper

This can be invoked from azalea.

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

internal/rosa/python.go

@@ -7,6 +7,9 @@ import (
 	"hakurei.app/internal/pkg"
 )
 
+// Python is the python interpreter used by [PipHelper].
+var Python = H("python")
+
 // PipHelper is the [Python] pip packaging helper.
 type PipHelper struct {
 	// Path elements joined with source.