Nix: Install on Mac Os with zsh fails to update .zshrc file

[barambani]

Installing nix on mac os using

$ curl https://nixos.org/nix/install | sh

is not updating the .zshrc file with

# Nix
if [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then
  . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'
fi
# End Nix

preventing zsh from finding the nix commands.

[periklis]

i can confirm this, i've evaluated a fresh install on a private machine yesterday

[bhmiller]

I'm seeing this in general just not work, even when manually running that command:

➜  ~ nix-shell
zsh: command not found: nix-shell
➜  ~ . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
➜  ~ nix-shell
zsh: command not found: nix-shell

Running the same thing from bash works

➜  ~ bash
bash-3.2$ nix-shell
bash: nix-shell: command not found
bash-3.2$ . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
bash-3.2$ nix-shell

[nix-shell:~]$ 

Still have the underlying issue of /etc/zshrc vs. updating ~/.zshrc.

System: macOS High Sierra 10.13.1 Beta (17B25c)
Nix version: 1.11.15
Nixpkgs version: 18.03pre116432.263185aa68
Sandboxing enabled: false

[barambani]

Thanks for checking. Just to add details, I think that adding that line manually to my ~/.zshrc and sourcing .zshrc I could run at least nix-env -i. I'm pretty sure I tested the git installation and worked. I'll verify it later, I don't have my laptop at the moment.

[copumpkin]

cc @grahamc who probably knows the installer code the most nowadays

[barambani]

I verified and I confirm that both nix-env --version and nix-shell --version work after adding the nix-daemon launch to the ~/.zshrc manually

[grahamc]

Interesting! This is pretty unfortunate, as I don't have a mac to test with other than the one running H.S. and that has other problems :/ The installer _shouldn't_ write to ~/.zshrc, but instead;

readonly PROFILE_TARGETS=("/etc/profile" "/etc/bashrc" "/etc/zshrc")

Do you have an /etc/zshrc? What about an /etc/zprofile? Re-reading the man-page for zsh, I now realize I misread this line:

Login shells source /etc/profile followed by $HOME/.profile.

as it only does that in _compatibility mode_.

--

A fix here is to ensure /etc/zshrc or /etc/zprofile are created if they don't exist, if your shell is zsh.

[bhmiller]

I have both /etc/zshrc and /etc/zprofile. The nix installer only updated zshrc.

FWIW, doing some debugging utilizing echo $__ETC_PROFILE_NIX_SOURCED to figure out if the . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' has been run (same system stuff as above, but now on beta 2, macOS High Sierra 10.13.1 Beta (17B35a)):

1. Base case: no changes to /etc/zshrc (nix-daemon.sh there) and /etc/zprofile (nix-daemon.sh not there)
   
   
   
   • echo $__ETC_PROFILE_NIX_SOURCED returns 1, but nix-shell command not found
   
   
   • subsequent recalls to . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' are noop b/c it's already sourced
   
   
2. Flip: /etc/zshrc (nix-daemon.sh not there) and /etc/zprofile (nix-daemon.sh there)
   
   
   
   • echo $__ETC_PROFILE_NIX_SOURCED returns 1, but nix-shell command not found
   
   
   • subsequent recalls to . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' are noop b/c it's already sourced
   
   
3. Remove both : /etc/zshrc (nix-daemon.sh not there) and /etc/zprofile (nix-daemon.sh not there)
   
   
   
   • echo $__ETC_PROFILE_NIX_SOURCED returns nothing (nix-shell command not found)
   
   
   • Then call . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh', which since not already sourced, does something
   
   
   • nix-shell now works from zsh
   
   
4. Remove both & update ~/.zshrc : /etc/zshrc (nix-daemon.sh not there) and /etc/zprofile (nix-daemon.sh not there); ~/.zshrc now has the call
   
   
   
   • echo $__ETC_PROFILE_NIX_SOURCED returns 1, AND nix-shell command found
   
   

Haven't gone back to documentation to explain what's going on, but for now, just using the work around from step 4.

[VoR0220]

adding that line (in the OP description) to the end of my .zshrc file fixed up the problem it would seem.

[nitinsurana]

Adding the line . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh to the end of ~/.zshrc didn't fixed it for me. I'm using MacOS High Sierra. Have tried quitting and restarting terminal.

[daniloprates]

I'm facing the same issue

[kyteague]

I also have this issue. Removing the nix lines from /etc/zshrc and adding

# Nix
if [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then
  . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'
fi
# End Nix

in ~/.zshrc fixed the issue for me.

[arizzubair]

I fixed it by source the shell file that is mentioned at the end of successful nix installation. On my mac it is:
. $HOME/.nix-profile/etc/profile.d/nix.sh
And it worked.

[abathur]

This may have already been fixed since it's gone nearly 2 years without a comment? In any case, a number of the underlying details have changed.

[tysonzero]

Does not appear fixed. Had the exact same problem just now and needed the same fix.

[ashkan-leo]

I faced the same issues and the workaround mentioned fixed my issue.