Release 3.9.1 (2025-08-28)

A useful nix flake init template default

Nix's default flake template is extremely bare bones, and not a useful starting point.

Deteminate Nix now uses a more fleshed out default template, including targeting multiple systems.

PR: DeterminateSystems/nix-src#180

Build cancellation is repaired on macOS

A recent macOS update changed how signals are handled by Nix and broke using Ctrl-C to stop a build. Determinate Nix on macOS correctly handles these signals and stops the build.

PR: DeterminateSystems/nix-src#184

Full Changelog: v3.9.0...v3.9.1