Error while updating the lock file of flake 'github:DeterminateSystems `src/pages/start/3.nix-develop.mdx`

[Jan Gazda]

Hi, it's my 2nd day learning about nix.
Quite honestly the nix space feels really daunting with the amount of overwhelming information and contradictions in docs etc..

I was hoping this project would be a great start for complete newbies like myself.

However on the page 3 I was supposed to run the command nix develop "github:DeterminateSystems/zero-to-nix#example"
but the result was

error:
       … while updating the lock file of flake 'github:DeterminateSystems/zero-to-nix/33bf4aa4e8dd22db397eadb7955c184697996706'

       error: unsupported tarball input attribute 'rev'
       

MacOS nix version nix-2.16.1

[Graham Christensen]

Uh oh! Unfortunately nix 2.17 has new attributes in the lock file that has backwards compatibility issues. If you upgrade nix to 2.17, it should fix it. You can do it like this: sudo nix upgrade-nix --nix-store-paths-url https://releases.nixos.org/nix/nix-2.17.0/fallback-paths.nix Here’s more info: https://flakehub.com/docs#i-got-error-unsupported- tarball-input-attribute-rev-what-does-this-error-mean

On September 10, 2023, GitHub ***@***.***> wrote: Hi, it's my 2nd day learning about nix.  Quite honestly the nix space feels really daunting with the amount of overwhelming information and contradictions in docs etc.. I was hoping this project would be a great start for complete newbies like myself. However on the page 3 I was supposed to run the command nix develop "github:DeterminateSystems/zero-to-nix#example"  but the result was error: … while updating the lock file of flake 'github:DeterminateSystems/zero-to- nix/33bf4aa4e8dd22db397eadb7955c184697996706' error: unsupported tarball input attribute 'rev' MacOS nix version nix-2.16.1

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[Jan Gazda]

I tried to upgrade nix but I received another bunch of weird errors I could not afford to debug.
Even though after all the errors, nix --version said it is 2.17 I did not trust it and reinstalled it.

I suspect some MacOS system update broke nix, I did reinstall using the script from this project and the command started to work 🤷

[Graham Christensen]

Ack! I’ll take a look. I’m glad the uninstall / reinstall got it done, but we’ll also research the upgrade problem. If you have any examples those would be helpful :). 

On September 10, 2023, GitHub ***@***.***> wrote: I suspect some MacOS system update broke nix, I did reinstall using the script from this project and the command started to work 🤷

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[Jan Gazda]

I suspect it may have to do something with any of these issues:

• NixOS/nix#3616
• NixOS/nix#2780
• NixOS/nix#5498

I went through the "normal" upgrade process

sudo -i sh -c 'nix-channel --update && nix-env --install --attr nixpkgs.nix && launchctl remove org.nixos.nix-daemon && launchctl load /Library/LaunchDaemons/org.nixos.nix-daemon.plist'

And it finished like this

unpacking channels...
....
building '/nix/store/0hr1jcjmllynliknqyd28ydxvfk4v3w4-user-environment.drv'...
/Library/LaunchDaemons/org.nixos.nix-daemon.plist: service already loaded
Load failed: 37: Operation already in progress

➜  ~/projects/rust_things/tmp nix --version
nix (Nix) 2.17.0

I hope that the workaround mentioned here is enough to keep nix running on MacOS NixOS/nix#3616 (comment)