{ config, lib, pkgs, inputs, ... }:
with lib; {
  config = mkMerge [
    (mkIf config.nathan.programs.util.core {
      home.packages = with pkgs; [
        # Rust rewrites of common shell utilites
        exa
        bat
        fd
        sd
        du-dust
        ripgrep
        ripgrep-all
        hyperfine
        dogdns
        duf
        # User friendly cut
        choose
        # Man but terse
        tealdeer
        # rsync for _The Cloud_ :tm:
        rclone
      ];
      # Configure tmux
      programs.tmux = {
        enable = true;
        aggressiveResize = true;
        extraConfig = if pkgs.stdenv.isLinux then ''
          set -g default-terminal "tmux-256color"
          set -ag terminal-overrides ",xterm-256color:RGB"
          set-option -g status-interval 1
          set-option -g automatic-rename on
          set-option -g automatic-rename-format '#{pane_current_path}: #{pane_current_command}'
        '' else ''
          set -g default-terminal "screen-256color"
          set -ag terminal-overrides ",xterm-256color:RGB"
          set-option -g status-interval 1
          set-option -g automatic-rename on
          set-option -g automatic-rename-format '#{pane_current_path}: #{pane_current_command}'
        '';
      };
      # Configure btop
      programs.btop = { enable = true; };
    })
    (mkIf config.nathan.programs.util.productivity {
      home.packages = with pkgs; [
        tokei
        # Spell check
        hunspell
        hunspellDicts.en-us
        # CLI Markdown renderer
        glow
        # Command line file manager
        broot
        # Much better curl
        httpie
        # CLI spreadsheets
        visidata
        # Cheatsheet manager
        cheat
        # Ping with a graph
        gping
        # Pandoc for documentation
        pandoc
        # Tmate for pair programming
        tmate
      ];
    })
    (mkIf (config.nathan.programs.util.git.enable
      && config.nathan.programs.util.git.gpgSign) {
        programs.git.signing = {
          key = lib.mkDefault "B7A40A5D78C08885";
          signByDefault = lib.mkDefault config.nathan.programs.util.git.gpgSign;
        };
      })
    (mkIf config.nathan.programs.util.git.enable {
      # Git adjacent packages
      home.packages = [
        inputs.nixpkgs-unstable.legacyPackages."${pkgs.system}".git-branchless
      ];
      #########################
      ## Git configuration
      #########################
      programs.git = {
        enable = true;
        package = pkgs.gitAndTools.gitFull;
        userName = "Nathan McCarty";
        userEmail = "nathan@mccarty.io";
        signing = {
          key = lib.mkDefault "B7A40A5D78C08885";
          signByDefault = config.nathan.programs.util.git.gpgSign;
        };
        ignores = [
          "**/*~"
          "*~"
          "*_archive"
          "/auto/"
          "auto-save-list"
          ".cask/"
          ".dir-locals.el"
          "dist/"
          "**/.DS_Store"
          "*.elc"
          "/elpa/"
          "/.emacs.desktop"
          "/.emacs.desktop.lock"
          "/eshell/history"
          "/eshell/lastdir"
          "flycheck_*.el"
          "*_flymake.*"
          "/network-security.data"
          ".org-id-locations"
          ".persp"
          ".projectile"
          "*.rel"
          "/server/"
          "tramp"
          "\\#*\\#"
        ];
        delta.enable = true;
        lfs.enable = true;
        extraConfig = {
          init = { defaultBranch = "trunk"; };
          log = {
            showSignature = true;
            abbrevCommit = true;
            follow = true;
            decorate = false;
          };
          rerere = {
            enable = true;
            autoupdate = true;
          };
          merge = {
            ff = "only";
            conflictstyle = "diff3";
          };
          push = {
            default = "simple";
            followTags = true;
          };
          pull = { rebase = true; };
          status = { showUntrackedFiles = "all"; };
          transfer = { fsckobjects = true; };
          color = { ui = "auto"; };
          diff = {
            mnemonicPrefix = true;
            renames = true;
            wordRegex = ".";
            submodule = "log";
          };
          # credential = { helper = "cache"; };
          # Disable annoying safe directory nonsense
          safe = { directory = "*"; };
        };
      };
    })
    (mkIf config.nathan.programs.util.ssh {
      #########################
      ## SSH Configuration
      #########################
      programs.ssh = {
        # SSH configuration
        enable = true;
        # extra config to set the ciphers
        extraConfig = ''
          Ciphers aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr
        '';
        # Enable compression
        compression = true;
        # enable session reuse
        controlMaster = "auto";
        controlPersist = "10m";
        # Configure known hosts
        matchBlocks = {
          "levitation" = {
            forwardAgent = true;
            user = "nathan";
            hostname = "100.95.223.6";
          };
          "perception" = {
            forwardAgent = true;
            user = "nathan";
            hostname = "100.67.146.101";
          };
          "oracles" = {
            forwardAgent = true;
            user = "nathan";
            hostname = "100.66.15.34";
          };
          "tounge" = {
            forwardAgent = true;
            user = "nathan";
            hostname = "100.75.37.98";
          };
          "shadowchild" = {
            forwardAgent = true;
            user = "nathan";
            hostname = "172.23.217.149";
          };
          "matrix.community.rs" = {
            forwardAgent = true;
            user = "nathan";
            hostname = "100.113.74.107";
          };
          "fusion" = {
            forwardAgent = true;
            user = "nathan";
            hostname = "100.99.69.14";
          };
          "de1955" = {
            user = "de1955";
            hostname = "de1955.rsync.net";
          };
        };
      };
    })
    (mkIf config.nathan.programs.util.fish {
      #########################
      ## Fish Configuration
      #########################
      programs.fish = {
        enable = true;
        # Setup our aliases
        shellAliases = {
          ls = "exa --icons";
          la = "exa --icons -a";
          lg = "exa --icons --git";
          cat = "bat";
          dig = "dog";
          df = "duf";
          idris2 = "rlwrap -s 1000 idris2 --no-banner";
        };
        # Custom configuration
        interactiveShellInit = ''
          # Setup any-nix-shell
          any-nix-shell fish --info-right | source
          # Load logger function
          source ~/.config/fish/functions/cmdlogger.fish
          # Load up vi keybindings
          fish_vi_key_bindings
        '';
        functions = {
          # Setup command logging to ~/.logs
          cmdlogger = {
            onEvent = "fish_preexec";
            body = ''
              mkdir -p ~/.logs
              echo (date -u +"%Y-%m-%dT%H:%M:%SZ")" "(echo %self)" "(pwd)": "$argv >> ~/.logs/(hostname)-(date "+%Y-%m-%d").log
            '';
          };
        };
      };
      programs.starship = {
        enable = true;
        settings = {
          directory = {
            truncation_length = 3;
            fish_style_pwd_dir_length = 1;
          };
          git_commit = {
            commit_hash_length = 6;
            only_detached = false;
          };
          package = { symbol = ""; };
          time = {
            disabled = false;
            format = "[$time]($style)";
            time_format = "%I:%M %p";
          };
        };
      };
      programs.bat = {
        enable = true;
        config = {
          theme = "zenburn";
          style = "header,rule,snip,changes";
        };
      };
      #########################
      ## Readline + fzf and other quality of life stuff
      #########################
      programs.readline = {
        enable = true;
        extraConfig = ''
          set editing-mode vi
          set show-all-if-ambiguous on
          set editing-mode vi

          set keymap vi-command
          # these are for vi-command mode
          "\e[A": history-search-backward
          "\e[B": history-search-forward
          j: history-search-forward
          k: history-search-backward
          set keymap vi-insert
          # these are for vi-insert mode
          "\e[A": history-search-backward
          "\e[B": history-search-forward
        '';
      };
      programs.fzf = { enable = true; };
    })
    (mkIf config.nathan.programs.util.json {
      #########################
      ## JSON Utilities
      #########################
      programs.jq = { enable = true; };
      home.packages = with pkgs; [ jc fx ];
    })
  ];
}