nix-combined

One flake, two targets:

• darwinConfigurations.RyanMac - the mac system (nix-darwin + home-manager), equivalent to what nix-dotfiles built.
• homeConfigurations.ryan - standalone home-manager for x86_64-linux, meant to run on top of Guix System as the home-manager substitute for what guix-dotfiles/home-config/home-configuration.scm used to fully own. Guix still owns the system config, package management, and three home services that need shepherd (pipewire, dbus, downloads-gc) - see MIGRATION.md.

users/ryan/common.nix holds everything shared by both (git, ssh, gpg-agent, starship, zsh, zen-browser, neovim). darwin.nix and linux.nix hold the platform-specific rest.

Darwin

sudo nix run --extra-experimental-features "nix-command flakes" github:nix-darwin/nix-darwin -- switch --flake .#RyanMac \
  --option "extra-substituters" "https://virby-nix-darwin.cachix.org" \
  --option "extra-trusted-public-keys" "virby-nix-darwin.cachix.org-1:z9GiEZeBU5bEeoDQjyfHPMGPBaIQJOOvYOOjGMKIlLo="

Subsequent rebuilds: rebuild (zsh alias) or sudo darwin-rebuild switch --flake ~/.config/nix/.

Linux (Guix)

Requires experimental-features = nix-command flakes in ~/.config/nix/nix.conf (guix-dotfiles already symlinks this in).

nix run --extra-experimental-features "nix-command flakes" home-manager -- switch --flake .#ryan

Subsequent rebuilds: rebuild (zsh alias) or home-manager switch --flake ~/.config/home-manager#ryan.

See MIGRATION.md for what needs to change in guix-dotfiles for this to slot in cleanly (symlink target, overlapping config entries to remove, the zsh login-shell switch), what stays Guix-native and why, and what got dropped as dead weight along the way.