{  pkgs, email, name, sshSignKey, ... }:
let
in
{
  atuin.enable = true;

  bat.enable = true;

  direnv = {
    enable = true;
    enableNushellIntegration = true;
    nix-direnv.enable = true;
  };

  eza = {
    enable = true;
  };

  gh = {
    enable = true;
    settings = {
      git_protocol = "ssh";
      version = 1;
    };
  };

  git = {
    enable = true;
    aliases = {
      co = "checkout";
      l = "log --graph --decorate --pretty=oneline --abbrev-commit";
      prune = "fetch --prune";
      stash-all = "stash save --include-untracked";
      s = "status";
    };
    ignores = [
      ".DS_Store"
      ".svn"
      "*~"
      "*.swp"
      "*.rbc"
      ".idea/"
      "__pycache__/"
      ".vscode"
      ".clangd/"
      ".direnv/"
      "compile_commands.json"
      "*.sublime-project"
      "*.sublime-workspace"
      "build.nosync/"
      ".cache/"
    ];
    userName = name;
    userEmail = email;
    lfs.enable = true;
    extraConfig = {
      init.defaultBranch = "develop";
      pull.ff = true;
      push.default = "simple";
      rebase.autoStash = true;

      credential.helper = "osxkeychain";

      commit.gpgsign = true;
      gpg.format = "ssh";
      user.signingkey = sshSignKey;
    };
  };

  jujutsu = {
    enable = true;
    settings = {
      signing = {
        sign-all = true;
        backend = "ssh";
        key = sshSignKey;
      };
      user = { inherit email name; };
      ui.editor = "zed -w";
    };
  };

  kitty = {
    darwinLaunchOptions = [ "--single-instance" ];
    enable = true;
    font = {
      name = "Berkeley Mono Variable Nerd Font";
      size = 14;
    };
    settings = {
      cursor_shape = "underline";
      confirm_os_window_close = 0;
    };
    themeFile = "Catppuccin-Latte";
  };

  # Shared shell configuration
  nushell = {
    enable = true;
    shellAliases = {
      edit = "^($env.VISUAL)";
      start = "^open";
      less = "bat";
      set-light-theme = "kitty +kitten themes GitHub Dark";
      set-dark-theme = "kitty +kitten themes GitHub Light";
      brew-backup = "brew bundle dump --global --no-lock --formula --cask --mas --tap --force";
      brew-cleanup = "brew bundle cleanup --global --no-lock --force --zap";
      brew-restore = "brew bundle install --global --no-lock";
    };
    environmentVariables = {
      # Set default editor
      EDITOR = ''"nvim"'';
      VISUAL = ''"codium"'';
      # DISABLE VI INDICATORS
      PROMPT_INDICATOR_VI_INSERT = ''""'';
      PROMPT_INDICATOR_VI_NORMAL = ''""'';
      # Alias for Monash compute cluster
      OPTCLUSTER = ''"compute.optimisation-2020.cloud.edu.au"'';
      # CMake settings
      CMAKE_EXPORT_COMPILE_COMMANDS = ''"1"''; # output compile-commands.json for clangd
      CMAKE_GENERATOR = ''"Ninja Multi-Config"''; # use Ninja generator by default
      CMAKE_C_COMPILER_LAUNCHER = ''"ccache"'';
      CMAKE_CXX_COMPILER_LAUNCHER = ''"ccache"'';
      # Homebrew shell setup (brew shellenv)
      HOMEBREW_PREFIX = ''"/opt/homebrew"'';
      HOMEBREW_CELLAR = ''"/opt/homebrew/Cellar"'';
      HOMEBREW_REPOSITORY = ''"/opt/homebrew"'';
      INFOPATH = ''"/opt/homebrew/share/info"'';
      # Set MANPATH
      MANPATH = ''"/usr/share/man:/usr/local/share/man:/Library/TeX/Distributions/.DefaultTeX/Contents/Man:/opt/homebrew/share/man"'';
      NIX_PROFILES = ''$"/nix/var/nix/profiles/default:($env.HOME)/.nix-profile"'';
    };
    envFile.text = ''
      if not 'config' in $env {
        $env.config = ([] | into record)
      }
      $env.config = ($env.config | upsert show_banner false)
      $env.config = ($env.config | upsert rm.always_trash true)
      $env.config = ($env.config | upsert edit_mode vi)
      $env.config = ($env.config | upsert history.max_size 100000)
      $env.config = ($env.config | upsert footer_mode auto)
      $env.config = ($env.config | upsert history.file_format "sqlite")
    '';
    configFile.text = ''
      # Specifies how environment variables are:
      # - converted from a string to a value on Nushell startup (from_string)
      # - converted from a value back to a string when running external commands (to_string)
      # Note: The conversions happen *after* config.nu is loaded
      $env.ENV_CONVERSIONS = {
        "PATH": {
          from_string: { |s| $s | split row (char esep) | path expand --no-symlink }
          to_string: { |v| $v | path expand --no-symlink | str join (char esep) }
        }
      }

      # Add entries to PATH:
      # From MacOS helper (/usr/libexec/path_helper)
      $env.PATH = ($env.PATH | split row (char esep) | append $"($env.HOME)/.nix-profile/bin")
      $env.PATH = ($env.PATH | split row (char esep) | append "/nix/var/nix/profiles/default/bin")
      $env.PATH = ($env.PATH | split row (char esep) | append "/Library/TeX/texbin")
      $env.PATH = ($env.PATH | split row (char esep) | append "/Library/Apple/usr/bin")
      $env.PATH = ($env.PATH | split row (char esep) | append "/opt/homebrew/bin")
      $env.PATH = ($env.PATH | split row (char esep) | append "/opt/homebrew/sbin")
      $env.PATH = ($env.PATH | split row (char esep) | append "/usr/local/bin")
      # Other package managers
      $env.PATH = ($env.PATH | split row (char esep) | prepend $"($env.HOME)/.local/bin")
      $env.PATH = ($env.PATH | split row (char esep) | prepend $"($env.HOME)/.cargo/bin")
    '';
  };

  ssh = {
    enable = true;
    matchBlocks = {
      optimization = {
        hostname = "compute.optimisation-2020.cloud.edu.au";
        user = "dekker1";
      };
      nitrogen = {
        hostname = "nitrogen.dekker.li";
        user = "jdekker";
      };
      m3 = {
        hostname = "m3-login3.massive.org.au";
        user = "jdekker";
      };
    };
  };

  starship = {
    enable = true;
    settings = (with builtins; fromTOML (readFile ./config/starship-tokyo-night.toml)) // {
      # Overrides
    };
  };

  topgrade = {
    enable = true;
    settings = {
      misc.disable = [
        "brew_cask"
        # "brew_formula"
        "containers"
        "gem"
        "node"
        "pnpm"
        "ruby_gems"
        "tlmgr"
        "vim"
        "yarn"
      ];
      misc.assume_yes = true;
      misc.cleanup = true;
      misc.no_retry = true;
      pre_commands = {
        "Home Manager" = "(cd ~/nix-config/ && nix flake update) && darwin-rebuild switch --flake ~/nix-config#aarch64-darwin";
      };
    };
  };

  vscode = {
    enable = false;
    package = pkgs.vscodium;
  };

  zoxide = {
    enable = true;
    enableNushellIntegration = true;
  };

  zsh = {
    enable = true;
    autocd = true;
    defaultKeymap = "viins";
    shellAliases = {
      edit = "$VISUAL";
      start = "open";
      less = "bat";
      ls = "eza";
    };
    sessionVariables = {
      # Set default editor
      EDITOR = "nvim";
      VISUAL = "codium";
      # CMake settings
      CMAKE_EXPORT_COMPILE_COMMANDS = "1"; # output compile-commands.json for clangd
      CMAKE_GENERATOR = "Ninja Multi-Config"; # use Ninja generator by default
      CMAKE_C_COMPILER_LAUNCHER = "sccache";
      CMAKE_CXX_COMPILER_LAUNCHER = "sccache";
      # Rust settings
      RUSTC_WRAPPER = "sccache";
    };
    initExtra = ''
      # Load Homebrew shell environment
      if [[ -f "/opt/homebrew/bin/brew" && -x $(realpath "/opt/homebrew/bin/brew") ]]; then
        eval "$(/opt/homebrew/bin/brew shellenv)"
       elif [[ -f "/usr/local/bin/brew" && -x $(realpath "/usr/local/bin/brew") ]]; then
        eval "$(/usr/local/bin/brew shellenv)"
      fi
    '';
  };
}