In reply to @marie:marie.cologne
but it still throws an error when trying to run it, not sure if that is buildNpmPackage's fault

oh sorry, forgot to send

/nix/store/7v1595gwyl2lrsb9dx1n8f0vig81l454-appium-2.4.1/lib/node_modules/appium-monorepo/node_modules/ajv-formats/src/index.ts:55
  ajv.opts.code.formats ??= _`require("ajv-formats/dist/formats").${exportName}`
           ^
TypeError: Cannot read properties of undefined (reading 'code')
    at addFormats (/nix/store/7v1595gwyl2lrsb9dx1n8f0vig81l454-appium-2.4.1/lib/node_modules/appium-monorepo/node_modules/ajv-formats/src/index.ts:55:12)
    at formatsPlugin (/nix/store/7v1595gwyl2lrsb9dx1n8f0vig81l454-appium-2.4.1/lib/node_modules/appium-monorepo/node_modules/ajv-formats/src/index.ts:42:3)
    at Function._instantiateAjv (/nix/store/7v1595gwyl2lrsb9dx1n8f0vig81l454-appium-2.4.1/lib/node_modules/appium-monorepo/packages/appium/lib/schema/schema.js:256:27)
    at new AppiumSchema (/nix/store/7v1595gwyl2lrsb9dx1n8f0vig81l454-appium-2.4.1/lib/node_modules/appium-monorepo/packages/appium/lib/schema/schema.js:102:30)
    at Function.create (/nix/store/7v1595gwyl2lrsb9dx1n8f0vig81l454-appium-2.4.1/lib/node_modules/appium-monorepo/packages/appium/lib/schema/schema.js:114:24)
    at Object.<anonymous> (/nix/store/7v1595gwyl2lrsb9dx1n8f0vig81l454-appium-2.4.1/lib/node_modules/appium-monorepo/packages/appium/lib/schema/schema.js:663:35)
    at Module._compile (node:internal/modules/cjs/loader:1376:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1435:10)
    at Module.load (node:internal/modules/cjs/loader:1207:32)
    at Function.Module._load (node:internal/modules/cjs/loader:1023:12)
    at Module.require (node:internal/modules/cjs/loader:1235:19)
    at require (node:internal/modules/helpers:176:18)
    at Object.<anonymous> (/nix/store/7v1595gwyl2lrsb9dx1n8f0vig81l454-appium-2.4.1/lib/node_modules/appium-monorepo/packages/appium/lib/config.js:9:1)
    at Module._compile (node:internal/modules/cjs/loader:1376:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1435:10)
    at Module.load (node:internal/modules/cjs/loader:1207:32)

In reply to @hexa:lossy.network
apparently we are already on 4.2.4, so no idea 😄

Is it expected for npm link to fail ? from a nix develop with buildNpmPackage

➜ npm link package.json 
npm ERR! code ENOENT
npm ERR! syscall mkdir
npm ERR! path /nix/store/d6lkbndr98lcn8spbqxfq52f2ldvqhks-nodejs-20.11.0/lib/node_modules/package.json
npm ERR! errno -2
npm ERR! enoent ENOENT: no such file or directory, mkdir '/nix/store/d6lkbndr98lcn8spbqxfq52f2ldvqhks-nodejs-20.11.0/lib/node_modules/package.json'
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent 

In reply to @keiichi:matrix.org

Is it expected for npm link to fail ? from a nix develop with buildNpmPackage

➜ npm link package.json 
npm ERR! code ENOENT
npm ERR! syscall mkdir
npm ERR! path /nix/store/d6lkbndr98lcn8spbqxfq52f2ldvqhks-nodejs-20.11.0/lib/node_modules/package.json
npm ERR! errno -2
npm ERR! enoent ENOENT: no such file or directory, mkdir '/nix/store/d6lkbndr98lcn8spbqxfq52f2ldvqhks-nodejs-20.11.0/lib/node_modules/package.json'
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent 

yes, here is the flake:

{
  description = "Blog";

  inputs = {
    flake-utils.url = "github:numtide/flake-utils";
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
  };

  outputs = { flake-utils, nixpkgs, self }:
    flake-utils.lib.eachDefaultSystem (system:
      let pkgs = import nixpkgs { inherit system; }; in
      {
        devShells.default = pkgs.mkShell {
          packages = with pkgs; [
            nodejs_21
            prefetch-npm-deps
          ];
        };
        formatter = pkgs.nixpkgs-fmt;
        packages.default =
          let
            packageJson = builtins.fromJSON (builtins.readFile ./package.json);
          in
          pkgs.buildNpmPackage {
            pname = packageJson.name;
            version = packageJson.version;
            npmDepsHash = "sha256-gjQCVQI7Tp+L6ZF9phJFZQaaPwtPDp0xVOYMF+CPHIg=";

            src = ./.;

            BUILD_ID = self.rev or self.dirtyRev;
            NEXT_TELEMETRY_DISABLED = 1;

            #installPhase = ''
            #  runHook preInstall
            #  cp -r out $out
            #  runHook postInstall
            #'';
          };
      }
    );
}