`nix shell` puts `~/.nix-profile/bin` first in PATH about nix-installer

[Hoverbear]

I was trying to reproduce this on an older Mac install I had and was not able to. I suspect it's related to something that changed in 0.15, perhaps related to the new Mac Nix hooks. I'm going to spend some more time investigating. Thank you for this report!

[Hoverbear]

I tested this again in 0.16.0 today and was able to confirm it. Noting you do need to nix profile install nixpkgs#hello before entering the nix shell to reproduce.

[Hoverbear]

I was able to reproduce this on an aarch64 Sonoma 14.3 using the installer from https://nixos.org/download as well as ours, in your issue you stated you also tried with the upstream installer, however it was when the upstream installer was pointing to 2.18 (I believe). I wonder if this is a Nix 2.19 issue.

~ % nix profile install nixpkgs#hello
~ % nix shell github:wch/nix-hello-demo
~ % hello
Hello, world!
~ % echo $PATH
/Users/user/.nix-profile/bin:/nix/var/nix/profiles/default/bin:/nix/store/050vas2swsvr7sqrf75mkxwi851ycxcz-hello/bin:/Users/user/.nix-profile/bin:/nix/var/nix/profiles/default/bin:...
~ % nix --version
nix (Nix) 2.19.3
~ % sw_vers
ProductName:            macOS
ProductVersion:         14.3
BuildVersion:           23D56

I was also able to reproduce this on a fresh Ubuntu VM using the upstream installer: