IMO two tools is reasonable -- something like homebrew or guix plus the system package manager. The frustration sets in when you realize you actually use a doze

IMO two tools is reasonable -- something like homebrew or guix plus the system package manager. The frustration sets in when you realize you actually use a dozen: pip, npm, go get, Docker (which has the same problem again, fractally), homebrew, tfenv, gem, rvm, the list goes on. If you are in an environment where there is even cursory review of your dependencies, it can become a nightmare. This is the origin of (also nightmarish) inflexible corporate policies like "we are a CentOS shop: don't use anything that isn't in those repos without a months-long review and sign off from the VP of infosec."