The best place to archive it is your current computer which you use every day, ideally with a VM of the machine that can run that code (maybe Open Virtualisatio

The best place to archive it is your current computer which you use every day, ideally with a VM of the machine that can run that code (maybe Open Virtualisation Format can keep it useable longer?). Then hope that when you want to use that program again in the future the VM will still boot on whatever host you have available. Then come back to it at least once a year to run it again and make sure it still works. At present we are lucky enough that Windows programs from 1990s still run under Windows 10 to some degree. Thank the folks at Microsoft for maintaining their operating system as a digital museum of archaic bug-compatible APIs. Something to keep on the shelf would mean you ignore it for too long and it stops working. Even something like a Python script may stop working due to changes in the language, and old versions of the interpreter no longer being maintained.