Misleading way of not supporting older versions of MacOS

[yesyves]

I have been struggling with the intention of running Homebrew on 10.11 recently and while I have absolutely nothing against the fact that the developers do not want to support it, I find that Brew rather seems to be actively preventing its usage on older versions.

The first problem I encountered was a message about not having Git in my PATH, which I had. After some investigation I found out that I was rather having an outdated version in /usr/bin so I installed the 2.29.2 version but still had that message about not having Git in my PATH. So I put that current Git in /usr/local/bin and still got the same message that Git was not in my PATH. So I replaced the binary in /Library/Developer/CommandLineTools/usr/bin with a current Git binary which was fine with brew doctor but I still got the message that Git is not in my PATH with brew update ! Which means that the installation process still can't complete.

The next step would probably be to patch brew's git shim so that

1. The error message be more specific
   but it should rather
2. do what it basically says and actually look for a current enough Git in PATH

The same logic should be applied for curl since 10.11 certificates are outdated.

Since I'm evidently new to Homebrew, being still short of a complete installation, I may have mixed a few things up so any precision or correction will be appreciated.

Thanks !

[SMillerDev]

This is duplicate