The latest composer version seems to be 2.0.2, and prestissimo refuses to install:
[InvalidArgumentException]
Package hirak/prestissimo at version has a PHP requirement incompatible with your PHP version, PHP extensions and Composer version
Digging a bit deeper, it seems to only be used to parallelize composer downloads, which is already done in composer 2 (more details at https://github.com/hirak/prestissimo/issues/233)
I think it's a good idea to remove it. Mellivora builds perfectly fine with it removed and seems to be functional.
The latest composer version seems to be 2.0.2, and prestissimo refuses to install:
Digging a bit deeper, it seems to only be used to parallelize composer downloads, which is already done in composer 2 (more details at https://github.com/hirak/prestissimo/issues/233) I think it's a good idea to remove it. Mellivora builds perfectly fine with it removed and seems to be functional.