Error when configuring devshell in nix

[JonathanLorimer]

Describe the bug
Getting an error on the commands attr when trying to configure the devshell via nix

 nix develop --show-trace
warning: Git tree '/home/jonathanl/Code/bank-wallet-backend-rs' is dirty
error: cannot coerce a set to a string

       at /nix/store/4ri9hysy5z82hj602whjrswrwfxsig4n-source/flake.nix:118:11:

          117|           ];
          118|           commands = with commands;
             |           ^
          119|           [

       … while evaluating the attribute 'commands' of the derivation 'nix-shell'

       at /nix/store/m5jxlii8jz3mrr8fsbhb1zq310zvd10l-source/pkgs/stdenv/generic/make-derivation.nix:270:7:

          269|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          270|       name =
             |       ^
          271|         let

My devshell configuration:

        devShells.default = pkgs.mkShell {
          devshell.name = "holdings-rs-shell";
          devshell.startup.pre-commit = self.checks.${system}.pre-commit-check.shellHook;
          devshell.packages = with pkgs; [
              # Rust build inputs
              pkg-config
              openssl

              # LSP's
              rust-analyzer
              rnix-lsp

              # Tools
              rust-toolchain
              bacon
              alejandra
              nix-linter

              # Cargo plugins
              cargo-audit
              cargo-udeps
              cargo-bloat
              cargo-expand

              # CLI tools
              sqlx-cli
              bunyan-rs

              # Faster linkers
              (
                if (lib.strings.hasInfix "darwin" system)
                then zld
                else if (lib.strings.hasInfix "aarch64" system)
                then lld
                else mold
              )
          ];
          commands = with commands;
          [
            {
              help = "Format rust and nix files";
              name = "format";
              package = format;
              category = "hygene";
            }
            {
              help = "Generate typescript types for the frontend";
              name = "gen-types";
              package = gen-types;
              category = "code-generation";
            }
            {
              help = "Generate sql query indices for sqlx offline mode";
              name = "gen-sql";
              package = gen-sql;
              category = "code-generation";
            }
            {
              help = "Run tests with specific logging configuration";
              name = "test-logs";
              package = test-logs;
              category = "testing";
            }
            {
              help = "Run clippy with specific warning flags enabled";
              name = "clippy-full";
              package = clippy-full;
              category = "hygene";
            }
          ];
        };

Expected behavior

I would expect to be able to configure commands the same way as specified in the module example

System information

λ cat flake.lock | jq .nodes.devshell
{
  "inputs": {
    "flake-utils": "flake-utils_2",
    "nixpkgs": "nixpkgs_2"
  },
  "locked": {
    "lastModified": 1663445644,
    "narHash": "sha256-+xVlcK60x7VY1vRJbNUEAHi17ZuoQxAIH4S4iUFUGBA=",
    "owner": "numtide",
    "repo": "devshell",
    "rev": "e3dc3e21594fe07bdb24bdf1c8657acaa4cb8f66",
    "type": "github"
  },
  "original": {
    "owner": "numtide",
    "repo": "devshell",
    "type": "github"
  }
}

[JonathanLorimer]

Resolved this, I was using pkgs.mkShell instead of pkgs.devshell.mkShell. Perhaps we should document how to configure the devshell via nix in flakes.