[Bug]: error: `rustPlatform.fetchCargoTarball` has been removed in 25.05, use `rustPlatform.fetchCargoVendor` instead

[AlexMills0]

Current Behavior

'nix run' results in an error.

Expected Behavior

No error.

Steps To Reproduce

nix flake init --template github:tweag/jupyenv
nix run

OS

- system: `"x86_64-linux"`
 - host os: `Linux 6.12.21, NixOS, 25.05 (Warbler), 25.05.20250402.2c8d3f4`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.24.13`
 - nixpkgs: `/nix/store/fwhfa9pbx8vdi8nd5pcys665baz6xdxf-source`

Version

https://github.com/tweag/jupyenv

Additional Context

Could be related to #570.
Issue resolved the same way: set the flake.nix input to the nixos-24.11 branch of nixpkgs.
Thanks for posting @cryptism - very helpful.

I found setting line 14 on flake.nix to:

  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-24.11";

fixed this. I'm not sure why it's dependent on the unstable version of nixpkgs by default, because obviously it's prey to situations exactly like this.

Originally posted by @cryptism in #570

Relevant log output

warning: ignoring untrusted substituter 'https://tweag-jupyter.cachix.org', you are not a trusted user.
Run `man nix.conf` for more information on the `substituters` configuration option.
warning: ignoring the client-specified setting 'trusted-public-keys', because it is a restricted setting and you are not a trusted user
error:
       … while calling the 'getAttr' builtin
         at <nix/derivation-internal.nix>:50:17:
           49|     value = commonAttrs // {
           50|       outPath = builtins.getAttr outputName strict;
             |                 ^
           51|       drvPath = strict.drvPath;

       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:37:12:
           36|
           37|   strict = derivationStrict drvAttrs;
             |            ^
           38|

       … while calculating requiredPythonModules for python3.12-jupyterlab-4.3.1:

       … while calculating requiredPythonModules for python3.12-jupyter-lsp-2.2.5:

       … while calculating requiredPythonModules for python3.12-jupyter-server-2.14.2:

       … while calculating requiredPythonModules for python3.12-jupyter-events-0.10.0:

       … while calculating requiredPythonModules for python3.12-jsonschema-4.23.0:

       … while calculating requiredPythonModules for python3.12-jsonschema-specifications-2024.10.1:

       … while calculating requiredPythonModules for python3.12-referencing-0.35.1:

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: `rustPlatform.fetchCargoTarball` has been removed in 25.05, use `rustPlatform.fetchCargoVendor` instead

[Jatsekku]

@jeckhart
I tested version from your fork but I think the hash you provided is incorrect.
Got it working by replacing:
sha256-TYO5p/9v/eMTHxAsRdZvYoVB/W1yvtUVPi205F3WlOo=
with
sha256-AHmnDTHuoB9wHH4CH20C+hFi9WaQBoUNMIvTIZlajVw=

[b4rsch]

Is there a workaround until it get's fixed?

[picogeyer]

Is there something wrong with the cryptism's fix? This bug has been open for a long time.