dotfiles/home/programs/scripts/nixpkgs-switch

#!/usr/bin/env fish

set -g os (uname)

switch $os
    case Darwin
        set -g config_dir "$HOME/.config/nixpkgs"
    case Linux
        set -g config_dir /etc/nixos
    case '*'
        echo "Unsupported OS"
        exit 1
end

pushd "$config_dir"
rm -rf result

set system_old (readlink /run/current-system)

switch $os
    case Darwin
        git pull
        env TERM=xterm-256color darwin-rebuild switch --flake .
    case Linux
        sudo git pull
        sudo nixos-rebuild switch --flake .
end

if test $status -eq 0
    set system_new (readlink /run/current-system)

    rm -f result

    if test -e "$HOME/.bin/upload-nifoc-nix-cache"
        echo "Updating nifoc-nix-cache ..."
        upload-nifoc-nix-cache
    end

    nvd diff "$system_old" "$system_new"
end

popd