Probably because your Debian doesn't work on other Linux distros like CentOS, Arch Linux ..., let alone MacOS and Windows. The holy grail would be a package man

Probably because your Debian doesn't work on other Linux distros like CentOS, Arch Linux ..., let alone MacOS and Windows. The holy grail would be a package manager that is both cross language and cross platform at the same time, but it seems too hard to be implemented in general. Anaconda is probably the closest as it also package many non python packages. Nix is also similar but it doesn't support Windows at all (without WSL)