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Nix, the purely functional package manager
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Can't find nix-shell after installationon mac OS X #2280

Open bergmark opened 6 years ago

bergmark commented 6 years ago

On Mac OS X (10.11.6) I ran curl https://nixos.org/nix/install | sh which downloaded https://nixos.org/releases/nix/nix-2.0.4/nix-2.0.4-x86_64-darwin.tar.bz2

On completion this was printed:

Before Nix will work in your existing shells, you'll need to close
them and open them again. Other than that, you should be ready to go.

Try it! Open a new terminal, and type:

  $ nix-shell -p nix-info --run "nix-info -m"

I started a new shell but nix-shell is not on my PATH in fish nor in bash

$ nix-shell
fish: Unknown command 'nix-shell'
$ bash
$ nix-shell
bash: nix-shell: command not found

I found nix-shell in /nix but could not start it:

$ /nix/store/771l8i0mz4c8kry8cz3sz8rr3alalckg-nix-2.0.4/bin/nix-shell -p nix-info --run "nix-info -m"
error: file 'nixpkgs' was not found in the Nix search path (add it using $NIX_PATH or -I), at (string):1:13

Should the post-install instructions be updated? Are there any additional steps needed to get nix-shell to run?

neon64 commented 6 years ago

I'm struggling with this issue too. As far as I'm aware, when a login shell starts, it loads certain init scripts like /etc/bashrc or /etc/profile. The nix installer adds new stuff to these scripts so that nix tools like nix-shell can be found. This means:

  1. you need to open a new terminal window for these init scripts to be run again
  2. these scripts are specific to the type of shell you're running. It appears as if nix has built in support for bash and zsh, but not fish: see https://github.com/NixOS/nix/issues/1512 for previous discussion on this.
zenspider commented 6 years ago

Same boat, but I'm using bash as my shell. It seems to never actually modify PATH and other things aren't quite working right either. I eventually "uninstalled", even tho that's not a thing either. It would be nice if there was a real cleanup script in the base.

2mol commented 6 years ago

Same problem here, and I'm running bash. I figured out after a while that the ~/.nix-profile was missing or broken (~/.nix-profile/bin is supposed to be added to your PATH).

You can hack-fix it by symlinking to /nix/var/nix/profiles/default, but no guarantee that that results in a clean install.

Seems kinda related to #2295

janek commented 5 years ago

Is this currently still broken? Are there any good workarounds?

zenspider commented 5 years ago

Dunno. After zero support here and anti-support in IRC I gave up. Just not worth the apathy and hostility to deal with it.

ryanorendorff commented 5 years ago

There seems to be a case where the installer script modifies .profile but that file is not sourced correctly. For my case, after installation I got this message (with $HOME filled in).

Installation finished!  To ensure that the necessary environment
variables are set, either log in again, or type

  . $HOME/.nix-profile/etc/profile.d/nix.sh

in your shell.

However I am using zsh, which does not load .profile automatically. Hence I had to add the line . $HOME/.nix-profile/etc/profile.d/nix.sh to something zsh executes (.zshrc).

The installer script seems to assume you are using bash. The culprit appears to be this line, which doesn't look for any other shells than bash (and only specific bash files that aren't guaranteed to be there) or shells that source .profile.

https://github.com/NixOS/nix/blob/5112a33fb17f792ceb6d641738277cbbe6a58bfc/scripts/install-nix-from-closure.sh#L144

Below is the problem line in context for the macOS installer.

if [ -z "$NIX_INSTALLER_NO_MODIFY_PROFILE" ]; then

    # Make the shell source nix.sh during login.
    p=$HOME/.nix-profile/etc/profile.d/nix.sh

    for i in .bash_profile .bash_login .profile; do # <-- This is the problematic line
        fn="$HOME/$i"
        if [ -w "$fn" ]; then
            if ! grep -q "$p" "$fn"; then
                echo "modifying $fn..." >&2
                echo "if [ -e $p ]; then . $p; fi # added by Nix installer" >> "$fn"
            fi
            added=1
            break
        fi
    done

fi

@zenspider Hopefully this helps.

rreimche commented 4 years ago

I've had the same problem on a fresh Ubuntu 19.10 and the problem was gone as soon as I've rebooted.

xeruf commented 4 years ago

Yep, similar thing here. On my system the /etc/zshrc doesn't exist, so opening a new terminal or zsh session didn't help.

Instead, I had to log out and back in, which loaded the appropriate PATH from /etc/profile.d/nix.sh

stale[bot] commented 3 years ago

I marked this as stale due to inactivity. → More info

xeruf commented 3 years ago

Should be fixable by adjusting the PATH after finishing installation

jimmy-jos commented 2 years ago

https://stackoverflow.com/a/54087505/6341943 This seems to work for me

drod3763 commented 2 years ago

However I am using zsh, which does not load .profile automatically. Hence I had to add the line . $HOME/.nix-profile/etc/profile.d/nix.sh to something zsh executes (.zshrc).

This is what got it to work for me. I think that the installer script just assumes you use bash and doesn't account for the files loaded by zsh.

keithy commented 2 years ago

zsh is standard on mac OS now

didier-ivado commented 2 years ago

I had this issue after upgrading my macOS version. Personally, I am using home-manager with flake (not 100% sure what it means). To solve my issue, I needed to add the below snippet at the bottom of /etc/zshrc

# 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
CMCDragonkai commented 2 years ago

You must use sudo vim /etc/zshrc to add it. I think a recent macos update replaced the /etc/zshrc, so it has to added in again.

joelparkerhenderson commented 2 years ago

Same issue on macOS 12.5.1 with typical zsh shell.

$ nix-shell
zsh: command not found: nix-shell

I verified the Nix installer appended the file /etc/zshrc:

$ tail /etc/zshrc
# 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

I verified the Nix installer created the file:

$ ls /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh

I verified the Nix daemon is running:

$ ps aux | grep nix-daemon
root             14409   0.0  0.0 409085616  21568   ??  Ss    1:07PM   0:00.06 /nix/var/nix/profiles/default/bin/nix-daemon

What's next please?

99Percent commented 2 years ago

if you have used nix itself to install zsh and ran the install script within zsh you will need to go back to editing the .bashrc and add the nix-daemon.sh line since you will be using bash instead of zsh again

sjbodzo commented 2 years ago

In case anyone else stumbles upon this after a MacOS upgrade (it hit me upgrading to Monterey 12.6), in the install/uninstall documentation it mentions the file to source, as shown above: https://nixos.org/manual/nix/stable/installation/installing-binary.html#macos

# 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

My preference is to override any system-wide setting with my user $HOME/.zshrc.

half0wl commented 1 year ago

I have the same issue on macOS Ventura 13.2 (22D49) + zsh on a fresh install through $ sh <(curl -L https://nixos.org/nix/install).

I've confirmed that:

I've tried:

Any ideas on what next?

edit

I fixed this by commenting out the lines that short-circuits on __ETC_PROFILE_NIX_SOURCED=1 in /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh:

# file: /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh

# Only execute this file once per shell.
- if [ -n "${__ETC_PROFILE_NIX_SOURCED:-}" ]; then return; fi
- __ETC_PROFILE_NIX_SOURCED=1
+ # if [ -n "${__ETC_PROFILE_NIX_SOURCED:-}" ]; then return; fi
+ # __ETC_PROFILE_NIX_SOURCED=1

Unsure why this happens 🤷🏻‍♂️ __ETC_PROFILE_NIX_SOURCED probably got unintendedly set to 1 somewhere along the line.

webpro commented 1 year ago

Just chiming in to say adding this your PATH somewhere might be enough, without editing /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh:

export PATH="$NIX_LINK/bin:/nix/var/nix/profiles/default/bin:$PATH"
dylanarmstrong commented 1 year ago

Also chiming in to say I fixed it by adding it to my local zshrc and adding this UNSET line:

# Nix
if [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then
  unset __ETC_PROFILE_NIX_SOURCED
  . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'
fi
# End Nix
zchdeepak commented 1 year ago

I had the same issue after upgrading to macOS ventura 13.5, and fixed it by adding the following line:

source $HOME/.nix-profile/etc/profile.d/nix.sh to my .zprofile (you can also add it to .zshrc)

I got this from the docs: https://nixos.org/manual/nix/stable/installation/env-variables#environment-variables

sourcec0de commented 1 year ago

I would recommend re-running the Nix installer. It walks through cleaning up system files from previous installations and brings the system back into the correct state. In my case, I actually lost $HOME/.nix-profile/etc/.

chevdor commented 1 year ago

Ran into this as well and the hints from answers above (@2mol @ryanorendorff) did help me move forward.

Short version:

now nix-shell -p nix-info --run "nix-info -m" (assuming you have internet connection) does run

tbarbugli commented 1 year ago

same issue for me, @chevdor solution worked for me. I use OSX 13.4.1 and zsh and used sh <(curl -L https://nixos.org/nix/install) to install nix and got no errors/warnings from it (TBH the install tools is so verbose that it would be easy to miss important information)

fred-snyder commented 7 months ago

I would recommend re-running the Nix installer. It walks through cleaning up system files from previous installations and brings the system back into the correct state. In my case, I actually lost $HOME/.nix-profile/etc/.

I upgraded macOS from version 13 to 14, and I confirm that reinstalling restored my Nix environment. Thanks!

hsteinshiromoto commented 2 weeks ago

https://stackoverflow.com/a/54087505/6341943 This seems to work for me

The answer https://stackoverflow.com/a/73799336 from this question solved my problem.