Whalebrew support was fully removed from Homebrew Bundle in
Homebrew 4.7.0 (Nov 2025). A `whalebrew` entry in a Brewfile now
raises `RuntimeError: Invalid Brewfile: undefined method 'whalebrew'`,
breaking the entire `brew bundle` invocation.
Use `mkRemovedOptionModule` so that existing configs get a clear
warning instead of an undefined-option error. Also removes the
auto-addition of `"whalebrew"` to `homebrew.brews` and the Brewfile
generation for Docker containers.
Add support for `cargo "pkg"` entries in the generated Brewfile. Homebrew
Bundle supports installing Rust crates via `cargo install`; the `rust`
formula is automatically installed if not already present.
Add support for `go "pkg"` entries in the generated Brewfile. Homebrew
Bundle supports installing Go packages via `go install`; the `go`
formula is automatically installed if not already present.
Both `brew bundle` formula and cask installers support a `postinstall`
option -- a shell command to run after the package is installed or
upgraded. The command only executes when the package actually changed,
not on every `brew bundle` run.
Examples from the Homebrew docs added to the `homebrew.brews` and
`homebrew.casks` option examples and tests.
Homebrew supports `link: :overwrite` which runs `brew link --overwrite`,
force-overwriting existing symlinks. Extract the existing
`restart_service` special-case logic into a reusable helper
(`mkBrewfileLineBoolOrSymbolString`) for options that can be either a
bool or a Ruby symbol in the Brewfile.
We ran into this issue wherein GitHub's `actions/checkout` would fail
because `git-config` would fail to include additional configuration.
The symptom was:
```
Error: fatal: could not read Username for 'https://github.com': terminal prompts disabled
```
And is caused by `git config --local includeIf.gitdir:/var/lib/github-runners/_work/…`.
Wherein `git` apparently resolves (canonicalizes) the current repository
path which then does not match the argument for `includeIf.gitdir` which
then means the configuration that `actions/checkout` is trying to apply
does not get pulled in, which then prevents git from authenticating with
GitHub and fails the build.
Ngl, gemini 3 found that out for me.
We could prefix `/private` everywhere, but changing the user's home
directory is going to [be tricky], not sure what do to about that.
[be tricky]: 7e22bf538a/modules/users/default.nix (L208)
The `--prefer-upstream-nix` flag is only guaranteed to be supported
until January 1st, but what's described now doesn't work at all, so this
is still an improvement.
Addresses an error like the following:
```sh-session
$ sudo darwin-rebuild --verbose --print-build-logs switch
building the system configuration...
fetching git input 'git+file:///private/etc/nix-darwin'
error:
… while evaluating an expression to select 'drvPath' on it
at «internal»:1:552:
… while evaluating strict
at «internal»:1:552:
(stack trace truncated; use '--show-trace' to show the full trace)
error: 'vim_configurable' has been renamed to/replaced by 'vim-full'
```
See <853d9f31ea>
Fixesnix-darwin/nix-darwin#1622
