Merge master into haskell-updates

You may make any other changes to your VM in this attribute set. For example,

you could enable Docker or X11 forwarding to your Darwin host.

## Troubleshooting the generated configuration {#sec-darwin-builder-troubleshoot}

The `linux-builder` package exposes the attributes `nixosConfig` and `nixosOptions` that allow you to inspect the generated NixOS configuration in the `nix repl`. For example:

```

$ nix repl --file ~/src/nixpkgs --argstr system aarch64-darwin

nix-repl> darwin.linux-builder.nixosConfig.nix.package

«derivation /nix/store/...-nix-2.17.0.drv»

nix-repl> :p darwin.linux-builder.nixosOptions.virtualisation.memorySize.definitionsWithLocations

[ { file = "/home/user/src/nixpkgs/nixos/modules/profiles/macos-builder.nix"; value = 3072; } ]

```

    githubId = 165283;

    name = "Alexey Kutepov";

  };

  rexxDigital = {

    email = "joellarssonpriv@gmail.com";

    github = "rexxDigital";

    githubId = 44014925;

    name = "Rexx Larsson";

  };

  rgnns = {

    email = "jglievano@gmail.com";

    github = "rgnns";

  minimal-bootstrap = {

    members = [

      alejandrosame

      artturin

      emilytrau

      ericson2314

  `/etc/group` and `/etc/shadow`. This also creates home directories

- `usrbinenv` creates `/usr/bin/env`

- `var` creates some directories in `/var` that are not service-specific

- `wrappers` creates setuid wrappers like `ping` and `sudo`

- `wrappers` creates setuid wrappers like `sudo`

```ShellSession

$ cd /path/to/nixpkgs/nixos/doc/manual

$ nix-shell

nix-shell$ make

nix-shell$ devmode

```

Once you are done making modifications to the manual, it's important to