[Bug]: quick start example doesn't work on darwin

[carlthome]

Current Behavior

When following the quick start, I get an error.

Expected Behavior

A running JupyterLab environment

Steps To Reproduce

https://github.com/tweag/jupyenv#getting-started

OS

- system: `"aarch64-darwin"`
- host os: `Darwin 22.4.0, macOS 13.3.1`
- multi-user?: `no`
- sandbox: `yes`
- version: `nix-env (Nix) 2.11.1`
- channels(Carl): `""`
- channels(root): `""`
- nixpkgs: `not found`

Version

3ad2c95

Additional Context

No response

Relevant log output

warning: Using saved setting for 'extra-substituters = https://tweag-jupyter.cachix.org' from ~/.local/share/nix/trusted-settings.json.
warning: Using saved setting for 'extra-trusted-public-keys = tweag-jupyter.cachix.org-1:UtNH4Zs6hVUFpFBTLaA4ejYavPo5EFFqgd7G7FxGW9g=' from ~/.local/share/nix/trusted-settings.json.
warning: ignoring untrusted substituter 'https://tweag-jupyter.cachix.org'
error: flake 'git+file:///Users/carl/Repos/carlthome/jupyenv-test' does not provide attribute 'apps.aarch64-darwin.default', 'defaultApp.aarch64-darwin', 'packages.aarch64-darwin.default' or 'defaultPackage.aarch64-darwin'

[carlthome]

I personally get the error but with the data science user hat on it seems like a pretty rough edge.

[carlthome]

#388 related

[GTrunSec]

duplicate #388