{pkgs, ...}:
with pkgs; let
  Gui = {
    Terminals = [
      alacritty # terminal emulator
    ];

    Browsers = [
      firefox # web browser
      ungoogled-chromium # web browser (only for web programming)
    ];

    ImageManipulation = [
      krita # new, and better (KDE)
      gimp # conservative, and old (GNOME)
    ];

    Social = [
      mumble # voice chat software (client)
      nheko # Matrix Desktop client
    ];

    Misc = [
      kalzium # Periodic Table of Elements
      keepassxc # password manager
      onlykey # OnlyKey Chrome Desktop App
      steam # Valve's digital software delivery system
    ];
  };

  TuiCli = {
    Networking = {
      OneOffThings = [
        #bind # A complete, highly portable implementation of the DNS protocol
        #firewalld # Firewall daemon with D-Bus interface
        #ngrep # A grep-like utility that allows you to search for network packets on an interface.
        #openbsd-netcat # TCP/IP swiss army knife. OpenBSD variant.
      ];

      Misc = [
        lftp # FTP client
        openssh # SSH client
      ];
    };

    EyeCandy = [
      banner # Print large banners to ASCII terminals
      cmatrix # A curses-based scrolling 'Matrix'-like screen
      hyfetch # Neofetch with LGBTQ pride flags.
    ];

    Backups = [
      rclone # Sync files to and from Google Drive, S3, Swift, Cloudfiles, Dropbox and Google Cloud Storage
      snapper # A tool for managing BTRFS and LVM snapshots. It can create, diff and restore snapshots and provides timelined auto-snapping.
      #snap-sync # Use snapper snapshots to backup to external drive
    ];

    Misc = [
      android-file-transfer # Android MTP client with minimalistic UI
      #python39Packages.docx2txt # Recovers text from DOCX files, with good formatting.
      btop # Interactive process viewer (maybe better than htop)
      nerdfonts # Patched font Source Code Pro from nerd fonts library
      xdg-ninja # A shell script which checks your $HOME for unwanted files and directories.
      yokadi # Command line oriented, sqlite powered, todo list
    ];

    WM = {
      river = [river]; # A dynamic tiling wayland compositor

      CLITools = [
        lswt # List Wayland toplevels
        wlopm # Wayland output power management.
        wlr-randr # Utility to manage outputs
        wl-clipboard # Command-line copy/paste utilities
        gammastep # Adjust the color temperature of your screen according to your surroundings.
      ];

      Components = [
        yambar # status panel
        swaybg # Wallpaper
        mako # notification daemon
        bemenu # Run prompt
      ];

      Media = [
        slurp # Select a region (used in the coordinates for grim/maim)
        grim # Screenshot utility
        #maim # Screenshot utility
        wf-recorder # Screen recorder
      ];

      Idle = [
        swayidle # Idle management daemon
        swaylock # Screen locker
      ];
    };

    LF = {
      lf = [lf]; # A terminal file manager inspired by ranger

      Functions = [
        broot # Fuzzy Search + tree + cd
        xdragon # Simple drag-and-drop source/sink
        trash-cli # Command line trashcan (recycle bin) interface
      ];

      Previewer = [
        chafa # Image-to-text converter
        highlight # source code highlighter
        mediainfo # Supplies technical and tag information about a video or audio file
        w3m # Text-based Web browser as well as pager
        ffmpegthumbnailer # video thumbnailer that can be used by file managers
      ];
    };

    Media = {
      Download = [
        yt-dlp # A youtube-dl fork with additional features and fixes
        #cclive # Commandline downloader for popular video websites.
      ];

      Manipulate = [
        ffmpeg # Complete solution to record, convert and stream audio and video
      ];

      View = [
        imv # Image viewer
        mpv # media player
      ];

      Listen = [
        moc # An ncurses console audio player designed to be powerful and easy to use
        pavucontrol # PulseAudio Volume Control
        #pipewire-alsa # Low-latency audio/video router and processor - ALSA configuration
        #pipewire-jack # Low-latency audio/video router and processor - JACK support
        #pipewire-pulse # Low-latency audio/video router and processor - PulseAudio replacement
      ];
    };

    Hardware = {
      Boot = [
        #efibootmgr # Linux user-space application to modify the EFI Boot Manager
        #grub # GNU GRand Unified Bootloader (2)
      ];

      Storage = [
        compsize # Calculate compression ratio of a set of files on Btrfs
        smartmontools # Control and monitor S.M.A.R.T. enabled ATA and SCSI Hard Drives
      ];

      Input = [
        piper # GTK application to configure gaming mice
      ];

      Printer = [
        gutenprint # Top quality printer drivers for POSIX systems
        sane-airscan # SANE - SANE backend for AirScan (eSCL) and WSD document scanners
      ];
    };

    Zsh = [
      #zsh # A very advanced and programmable command interpreter (shell) for UNIX
      #zsh-syntax-highlighting # Fish shell like syntax highlighting for Zsh

      # next one only works if your alias is only a command, e.g. if you `alias='cat some_file.txt &2> /dev/null'`, running `cat some_file.txt` won't trigger it.
      # TODO find something better for this use case
      # zsh-you-should-use # ZSH plugin that reminds you to use existing aliases for commands you just typed
    ];

    CoreUtils = [
      file # File type identification utility
      #grep # A string search utility
      sudo # Give certain users the ability to run some commands as root
      wget # Network utility to retrieve files from the Web
      which # A utility to show the full path of commands
    ];

    FileListers = [
      tree # A directory listing program displaying a depth indented list of files
      findutils # GNU utilities to locate files
      fd # Simple, fast and user-friendly alternative to find
      ripgrep # A search tool that combines the usability of ag with the raw speed of grep
    ];

    UnCompressors = [
      zip # Compressor/archiver for creating and modifying zipfiles
      gzip # GNU compression utility
      p7zip # Command-line file archiver with high compression ratio
      unzip # For extracting and viewing files in .zip archives
    ];

    Editors = [
      ed # A POSIX-compliant line-oriented text editor
      #sed # GNU stream editor
      #vi # The original ex/vi text editor
      neovim # Fork of Vim aiming to improve user experience, plugins, and GUIs
    ];

    Programming = {
      GeneralTools = [
        git # the fast distributed version control system
        git-bug # Distributed, offline-first bug tracker embedded in git, with bridges
        glow # Command-line markdown renderer
        strace # A diagnostic, debugging and instructional userspace tracer
        tokei # A blazingly fast CLOC (Count Lines Of Code) program
      ];

      Rust = [
        rustup # The Rust toolchain installer
        rust-analyzer # Rust compiler front-end for IDEs
      ];

      Yaml = [
        yamllint # Linter for YAML files
      ];

      TeX = [
        zathura # Minimalistic document viewer
        #zathura-pdf-poppler # Adds pdf support to zathura by using the poppler engine
        ltex-ls # LTeX Language Server
        biber # A Unicode-capable BibTeX replacement for biblatex users
        pandoc # Conversion between markup formats
      ];

      Web = [
        nodePackages_latest.vscode-langservers-extracted # Language servers extracted from VSCode.
        rsass # dart-sass # Sass makes CSS fun again
        nodePackages_latest.prettier # An opinionated code formatter for JS, JSON, CSS, YAML and much more
      ];

      Shell = [
        dash # POSIX compliant shell that aims to be as small as possible
        shellcheck # Shell script analysis tool
      ];

      Lua = [
        lua # Powerful lightweight programming language designed for extending applications
        luaformatter # lua-format # LuaFormatter - Code formatter for Lua
        sumneko-lua-language-server #lua-language-server # Lua Language Server coded by Lua
      ];

      R = [
        R # Language and environment for statistical computing and graphics
      ];
    };
  };
  #expect # A tool for automating interactive applications
  #handlr # Powerful alternative to xdg-utils written in Rust
  #linux # The Linux kernel and modules
  #linux-firmware # Firmware files for Linux
  #packagekit-qt5 # Qt5 bindings for PackageKit
  #vulkan-radeon # Radeon's Vulkan mesa driver
  #xorg-bdftopcf # Convert X font from Bitmap Distribution Format to Portable Compiled Format

  mapFun = x:
    if builtins.isAttrs x
    then
      if lib.isDerivation x
      then [x]
      else builtins.attrValues x
    else [x];
in {
  nixpkgs.config.allowUnfreePredicate = pkg:
    builtins.elem (lib.getName pkg) [
      "steam"
      "steam-original"
    ];

  environment.systemPackages = with builtins;
    concatLists
    (concatLists [
      (concatMap mapFun
        (concatMap mapFun
          (concatMap mapFun
            (concatMap mapFun
              (concatMap mapFun
                (concatMap mapFun
                  (attrValues Gui)))))))

      (concatMap mapFun
        (concatMap mapFun
          (concatMap mapFun
            (concatMap mapFun
              (concatMap mapFun
                (concatMap mapFun
                  (attrValues TuiCli)))))))
    ]);
}
# QEMU
# TEX
# {{{
#adobe-source-han-sans-kr-fonts # Adobe Source Han Sans Subset OTF - Korean OpenType/CFF fonts
#alsa-utils # Advanced Linux Sound Architecture - Utilities
#element-desktop # Glossy Matrix collaboration client — desktop version.
#gawk # GNU version of awk
#gimp # GNU Image Manipulation Program
#git-lfs # Git extension for versioning large files
#gnome-epub-thumbnailer # Thumbnailer for EPub and MOBI books
#gnumeric # A GNOME Spreadsheet Program
#gpick # Advanced color picker written in C++ using GTK+ toolkit
#gradle # Powerful build system for the JVM
#groff # GNU troff text-formatting system
#jre11-openjdk-headless # OpenJDK Java 11 headless runtime environment
#klavaro # Free touch typing tutor program
#lifeograph # Private journal, diary and note taking application
#lynx # A text browser for the World Wide Web
#man-db # A utility for reading man pages
#networkmanager # Network connection manager and user applications
#nss-mdns # glibc plugin providing host name resolution via mDNS
#python-spotdl # Download your Spotify playlists and songs along with album art and metadata (from YouTube if a match is found).
#python-xlsx2csv # xlsx to csv converter
#ruff # An extremely fast Python linter, written in Rust
#signal-desktop # Signal Private Messenger for Linux
#slides # Terminal based presentation tool
#torbrowser-launcher # Securely and easily download, verify, install, and launch Tor Browser in Linux
#web-ext # A command line tool to help build, run, and test web extensions
#wkhtmltopdf # Command line tools to render HTML into PDF and various image formats
#xcursor-bluecurve # Redhat's Bluecurve X mouse cursor theme
# XORG
#xorg-docs # X.org documentations
#xorg-font-util # X.Org font utilities
#xorg-fonts-100dpi # X.org 100dpi fonts
#xorg-fonts-75dpi # X.org 75dpi fonts
#xorg-fonts-encodings # X.org font encoding files
#xorg-iceauth # ICE authority file utility
#xorg-mkfontscale # Create an index of scalable font files for X
#xorg-server # Xorg X server
#xorg-server-common # Xorg server common files
#xorg-server-devel # Development files for the X.Org X server
#xorg-server-xephyr # A nested X server that runs as an X application
#xorg-server-xnest # A nested X server that runs as an X application
#xorg-server-xvfb # Virtual framebuffer X server
#xorg-sessreg # Register X sessions in system utmp/utmpx databases
#xorg-setxkbmap # Set the keyboard using the X Keyboard Extension
#xorg-smproxy # Allows X applications that do not support X11R6 session management to participate in an X11R6 session
#xorg-x11perf # Simple X server performance benchmarker
#xorg-xauth # X.Org authorization settings program
#xorg-xbacklight # RandR-based backlight control application
#xorg-xcmsdb # Device Color Characterization utility for X Color Management System
#xorg-xcursorgen # Create an X cursor file from PNG images
#xorg-xdpyinfo # Display information utility for X
#xorg-xdriinfo # Query configuration information of DRI drivers
#xorg-xev # Print contents of X events
#xorg-xgamma # Alter a monitor's gamma correction
#xorg-xhost # Server access control program for X
#xorg-xinit # X.Org initialisation program
#xorg-xinput # Small commandline tool to configure devices
#xorg-xkbcomp # X Keyboard description compiler
#xorg-xkbevd # XKB event daemon
#xorg-xkbutils # XKB utility demos
#xorg-xkill # Kill a client by its X resource
#xorg-xlsatoms # List interned atoms defined on server
#xorg-xlsclients # List client applications running on a display
#xorg-xmodmap # Utility for modifying keymaps and button mappings
#xorg-xpr # Print an X window dump from xwd
#xorg-xrandr # Primitive command line interface to RandR extension
#xorg-xrdb # X server resource database utility
#xorg-xrefresh # Refresh all or part of an X screen
#xorg-xsetroot # Classic X utility to set your root window background to a given pattern or color
#xorg-xvinfo # Prints out the capabilities of any video adaptors associated with the display that are accessible through the X-Video extension
#xorg-xwayland # run X clients under wayland
#xorg-xwininfo # Command-line utility to print information about windows on an X server
#xorg-xwud # X Window System image undumping utility
# }}}