Basic Guide Error

[c4lliope]

(copied here from Matrix, happy to discuss there if anyone's online this week)

hello - I'm seeing an odd error as I go through the basic guide:
https://github.com/rustshop/flakebox/blob/master/docs/building-new-project.md#extra-dependencies

➜ hx flake.nix; nd nix build .#gitoxide
warning: Git tree '/home/calliope/disc/nvme0n1p6/code/gitoxidelabs/gitoxide' is dirty
error:
       … while evaluating the attribute 'devShells'
         at /nix/store/kwpljf3n2xlxlrq5k0p02c6kghc4n6ca-source/flake.nix:56:7:
           55|       packages.default = legacyPackages.gitoxide;
           56|       devShells = flakeboxLib.mkShells {
             |       ^
           57|         packages = [ ];

       … while evaluating the attribute 'lib.x86_64-linux'
         at /nix/store/qrv62r966lcw0pmivndiqibn24swahzy-source/flake.nix:54:7:
           53|
           54|       lib = {
             |       ^
           55|         inherit mkLib;

       error: attribute 'x86_64-linux' missing
       at /nix/store/kwpljf3n2xlxlrq5k0p02c6kghc4n6ca-source/flake.nix:34:21:
           33|       pkgs = import nixpkgs { system = arch; };
           34|       flakeboxLib = flakebox.lib.${arch} { };
             |                     ^
           35|

why would flakebox.lib.x86_64-linux be missing?

Here is the flake.nix that I am adding to https://github.com/gitoxideLabs/gitoxide
(Using other approaches I fell into the same problematic dependencies you chose - openssl and libsqlite3-sys).
I'll read up on how to use Crane manually but flakebox may be a nicer place to begin. I hope to learn more.

{
  description = "`gitoxide` compiled in a nix shell, using `crane` and `flakebox`.";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-25.05";
    flake-utils.url = "github:numtide/flake-utils";
    flakebox = {
      url = "github:rustshop/flakebox";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, nixpkgs, flakebox, flake-utils }:
    flake-utils.lib.eachDefaultSystem (arch: let
      pkgs = import nixpkgs { system = arch; };
      flakeboxLib = flakebox.lib.${arch} { };

      rustSrc = flakeboxLib.filterSubPaths {
        root = builtins.path { name = "gitoxide"; path = ./.; };
        paths = [ "Cargo.toml" "Cargo.lock" ".cargo" "src" ];
      };

      legacyPackages = (flakeboxLib.craneMultiBuild { }) (craneLib': let
          craneLib = with pkgs; (craneLib'.overrideArgs {
            pname = "gitoxide";
            src = rustSrc;
            buildInputs = [ openssl.dev ];
            nativeBuildInputs = [ pkg-config ];
          });
        in rec {
          workspaceDeps = craneLib.buildWorkspaceDepsOnly { };
          workspaceBuild = craneLib.buildWorkspace { cargoArtifacts = workspaceDeps; };
          gitoxide = craneLib.buildPackage { };
        });
    in {
      inherit legacyPackages;
      packages.default = legacyPackages.gitoxide;
      devShells = flakeboxLib.mkShells {
        packages = [ ];
      };
  });
}

[dpc]

#210 should help, maybe? I think.