How to get cargo etc from a toolchain file?

[wmertens]

I tried using fromRustupToolchainFile for rust-bin, but cargo etc still use the latest nightly.

How can I make sure that all the tools use the same rust version from the toolchain file?

[oxalica]

I tried using fromRustupToolchainFile for rust-bin, but cargo etc still use the latest nightly.

Please paste the Nix code you are using, and how you enter the development environment for cargo.

[wmertens]

Here's my flake.nix:

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.05";
    rust-overlay.url = "github:oxalica/rust-overlay";
  };

  outputs = { self, rust-overlay, nixpkgs }:
    let
      b = builtins;
      devShell = system: _pkgs:
        let
          overlays = [ (import rust-overlay) ];
          pkgs = import nixpkgs {
            inherit system overlays;
          };
        in
        {
          default = pkgs.mkShell {
            nativeBuildInputs = with pkgs; [
              bashInteractive
              gitMinimal

              nodejs_20

              # Qwik optimizer deps
              cargo
              clippy
              wasm-pack
              ((rust-bin.fromRustupToolchainFile
                ./rust-toolchain).override {
                targets = [ "wasm32-unknown-unknown" ];
              })
            ];
          };
        };
    in
    {
      devShells = b.mapAttrs (devShell) nixpkgs.legacyPackages;
    };
}

As you can see I only get the rustc from the toolchain file, I can't figure out how to get the rest

[oxalica]

        nativeBuildInputs = with pkgs; [
          bashInteractive
          gitMinimal

          nodejs_20

          # Qwik optimizer deps
          cargo
          clippy
          wasm-pack
          ((rust-bin.fromRustupToolchainFile
            ./rust-toolchain).override {
            targets = [ "wasm32-unknown-unknown" ];
          })
        ];

You have cargo explicitly listed here, which is picked from pkgs and overrides the cargo from fromRustupToolchainFile. Please remove the cargo line.

[wmertens]

That did the trick thank you :pray::pray::pray: