{
    description = "MIREA desktop";
    inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-24.11";
    outputs = { self, nixpkgs, ... }:
        let
            pkgs = import nixpkgs { system = "x86_64-linux"; };

            wallpaper = builtins.readFile "${self}/wallpaper.svg";
            folderIcon = builtins.readFile "${self}/folderIcon.svg";
            pcmanfmConf = "${self}/pcmanfm.conf";

            desktopItems0 = (pkgs.writeText "desktop-items-0.conf"
''
[*]
wallpaper_mode=center
wallpaper_common=1
wallpapers_configured=1
wallpaper=${self}/wallpaper.svg
desktop_bg=#77767b
desktop_fg=#ffffff
desktop_shadow=#000000
desktop_font=Sans 12
folder=/home/student
show_wm_menu=1
sort=mtime;ascending;
show_documents=0
show_trash=1
show_mounts=1
'');

            jgmenu_run_prepared =
                (pkgs.writeShellScript "jgmenu_run_prepared"
                ''${pkgs.jgmenu}/bin/jgmenu_run apps | ${prepare_jgmenu}/bin/prepare_jgmenu | ${pkgs.jgmenu}/bin/jgmenu --simple'');

            powermenu = (pkgs.writeShellScript "powermenu"
''
if [ "$1" = "poweroff" ]; then
    ${pkgs.zenity}/bin/zenity --question --text "Уверены, что хотите выключить?" --default-cancel && poweroff
    exit 0
fi

if [ "$1" = "reboot" ]; then
    ${pkgs.zenity}/bin/zenity --question --text "Уверены, что хотите перезагрузить?" --default-cancel && reboot
    exit 0
fi
'');

            mireaweek = pkgs.stdenv.mkDerivation rec {
                pname = "mireaweek";
                version = "0.1.0";
                src = ./weekday.kt;
                dontInstall = true;
                dontUnpack = true;
                nativeBuildInputs = [ pkgs.kotlin ];
                buildPhase = ''
                    mkdir -p $out/{bin,lib}
                    kotlinc $src -include-runtime -d mireaweek.jar
                    mv mireaweek.jar $out/lib
                    printf "${pkgs.jre}/bin/java -jar $out/lib/mireaweek.jar" > $out/bin/mireaweek
                    chmod +x $out/bin/mireaweek
                '';
            };

            prepare_jgmenu = pkgs.stdenv.mkDerivation rec {
                pname = "prepare_jgmenu";
                version = "0.1.0";
                src = ./JgmenuCorrector.kt;
                dontInstall = true;
                dontUnpack = true;
                nativeBuildInputs = [ pkgs.kotlin ];
                buildPhase = ''
                    mkdir -p $out/{bin,lib}
                    kotlinc $src -include-runtime -d prepare.jar
                    mv prepare.jar $out/lib
                    printf "${pkgs.jre}/bin/java -jar $out/lib/prepare.jar" > $out/bin/prepare_jgmenu
                    chmod +x $out/bin/prepare_jgmenu
                '';
            };

            tint2conf1 = builtins.readFile "${self}/tint2conf.1";
            tint2conf2 = builtins.readFile "${self}/tint2conf.2";

            tint2config = pkgs.writeText "tint2conf"
''
${tint2conf1}
#-------------------------------------
button = new
button_lclick_command = ${jgmenu_run_prepared}
button_icon = ${self}/wallpaper.svg

separator = new
separator_style = empty
separator_padding = 3 4

button = new
button_lclick_command = ${pkgs.chromium}/bin/chromium
button_icon = ${pkgs.chromium}/share/icons/hicolor/48x48/apps/chromium.png

button = new
button_lclick_command = ${pkgs.pcmanfm}/bin/pcmanfm
button_icon = ${self}/folderIcon.svg

separator = new
separator_style = empty
separator_padding = 3 4

#-------------------------------------
execp = new
execp_name = switch
execp_command = ${pkgs.xkb-switch}/bin/xkb-switch
execp_interval = 1
execp_font = mono 10
execp_font_color = #dddddd 100
execp_centered = 1
execp_has_icon = 0
execp_padding = 5 5

#-------------------------------------
execp = new
execp_name = mireaweek
execp_command = ${mireaweek}/bin/mireaweek
execp_interval = 0
execp_font = mono 10
execp_font_color = #dddddd 100
execp_centered = 1
execp_has_icon = 0
execp_padding = 5 5

${tint2conf2}
'';

            screenshotDir = ''"$HOME/Pictures/Screenshots"'';
            videoDir = ''"$HOME/Videos/ScreenRecords"'';

            screenshotFullClipboard = pkgs.writeShellScript "screenshot-full-clipboard"
''
exec ${pkgs.maim}/bin/maim | ${pkgs.xclip}/bin/xclip -selection clipboard -t image/png
'';

            screenshotWindowClipboard = pkgs.writeShellScript "screenshot-window-clipboard"
''
exec ${pkgs.maim}/bin/maim -i "$(${pkgs.xdotool}/bin/xdotool getactivewindow)" | ${pkgs.xclip}/bin/xclip -selection clipboard -t image/png
'';

            screenshotFullFile = pkgs.writeShellScript "screenshot-full-file"
''
mkdir -p ${screenshotDir}
exec ${pkgs.maim}/bin/maim "$HOME/Pictures/Screenshots/$(date +%F-%H-%M-%S).png"
'';

            screenshotRegionClipboard = pkgs.writeShellScript "screenshot-region-clipboard"
''
exec ${pkgs.maim}/bin/maim -s | ${pkgs.xclip}/bin/xclip -selection clipboard -t image/png
'';

            screenshotRegionFile = pkgs.writeShellScript "screenshot-region-file"
''
mkdir -p ${screenshotDir}
exec ${pkgs.maim}/bin/maim -s "$HOME/Pictures/Screenshots/$(date +%F-%H-%M-%S).png"
'';

            recordFullScreen = pkgs.writeShellScript "record-full-screen"
''
set -eu
mkdir -p "$HOME/.cache" ${videoDir}
pidfile="$HOME/.cache/mirea-screenrecord.pid"

if [ -f "$pidfile" ] && kill -0 "$(cat "$pidfile")" 2>/dev/null; then
    kill -INT "$(cat "$pidfile")"
    rm -f "$pidfile"
    exit 0
fi

geometry="$(${pkgs.xrandr}/bin/xrandr | awk '/\*/ { print $1; exit }')"
outfile="$HOME/Videos/ScreenRecords/$(date +%F-%H-%M-%S).mkv"

${pkgs.ffmpeg}/bin/ffmpeg \
    -f x11grab \
    -video_size "$geometry" \
    -framerate 30 \
    -i "$DISPLAY" \
    -c:v libx264 \
    -preset ultrafast \
    "$outfile" >/dev/null 2>&1 &

echo $! > "$pidfile"
'';

            capturePanel = pkgs.writeShellScript "capture-panel"
''
choice="$(${pkgs.zenity}/bin/zenity \
    --list \
    --title="Capture" \
    --column="Action" \
    "Screenshot: whole screen -> clipboard" \
    "Screenshot: active window -> clipboard" \
    "Screenshot: whole screen -> file" \
    "Screenshot: region -> clipboard" \
    "Screenshot: region -> file" \
    "Record: whole screen (start/stop)" \
    "Record: region (start/stop)" \
    --height=320 --width=520)"

case "$choice" in
    "Screenshot: whole screen -> clipboard")
        exec ${screenshotFullClipboard}
        ;;
    "Screenshot: active window -> clipboard")
        exec ${screenshotWindowClipboard}
        ;;
    "Screenshot: whole screen -> file")
        exec ${screenshotFullFile}
        ;;
    "Screenshot: region -> clipboard")
        exec ${screenshotRegionClipboard}
        ;;
    "Screenshot: region -> file")
        exec ${screenshotRegionFile}
        ;;
    "Record: whole screen (start/stop)")
        exec ${recordFullScreen}
        ;;
    *)
        exit 0
        ;;
esac
'';

            sxhkdConfig = pkgs.writeText "sxhkdrc"
''
# Windows-like
Print
    ${screenshotFullClipboard}

alt + Print
    ${screenshotWindowClipboard}

super + Print
    ${screenshotFullFile}

super + shift + s
    ${screenshotRegionClipboard}

# macOS-like
super + shift + 3
    ${screenshotFullFile}

control + super + shift + 3
    ${screenshotFullClipboard}

super + shift + 4
    ${screenshotRegionFile}

super + shift + 5
    ${capturePanel}

# "Run" / terminal
super + r
    ${pkgs.sakura}/bin/sakura

super + Return
    ${pkgs.sakura}/bin/sakura

# tap Super only -> menu
F13
    ${jgmenu_run_prepared}
'';

            sxhkdWrapped = pkgs.writeShellScript "sxhkd-mirea"
''
exec ${pkgs.sxhkd}/bin/sxhkd -c ${sxhkdConfig}
'';

            xcapeWrapped = pkgs.writeShellScript "xcape-mirea"
''
exec ${pkgs.xcape}/bin/xcape -e 'Super_L=F13;Super_R=F13'
'';

            tint2custom = pkgs.writeShellScript "tint2"
''
${pkgs.tint2}/bin/tint2 -c ${tint2config}
'';

            pcmanfmdesktop = pkgs.writeShellScript "pcmanfm"
''
${pkgs.pcmanfm}/bin/pcmanfm --desktop
'';

            myxinitrc = pkgs.writeText ".xinitrc"
''
${tint2custom} &
${pcmanfmdesktop} &
${sxhkdWrapped} &
${xcapeWrapped} &
exec ${pkgs.metacity}/bin/metacity
'';

            resethome = pkgs.writeShellScript "startmireadesktop"
''
rm -rf $HOME/{*,.*} 2> /dev/null # wipe student directory, yeah!
printf "[client]\nport=3306\nuser=root" > /home/student/.my.cnf
echo "\set user postgres" > /home/student/.psqlrc
mkdir -p "$HOME/.config/pcmanfm/default"
cp ${desktopItems0} "$HOME/.config/pcmanfm/default/desktop-items-0.conf"
cp ${pcmanfmConf} "$HOME/.config/pcmanfm/default/pcmanfm.conf"
chmod +w -R "$HOME/.config/pcmanfm/default/"
mkdir -p "$HOME/.config/gtk-3.0"
printf "[Settings]\ngtk-icon-theme-name = WhiteSur" > "$HOME/.config/gtk-3.0/settings.ini"
cp ${myxinitrc} "$HOME/.xinitrc"
mkdir -p "$HOME/Pictures/Screenshots" "$HOME/Videos/ScreenRecords" "$HOME/.cache"
'';
        in {
            packages.x86_64-linux.powermenu = powermenu; # must be imported into configuration.nix!
            packages.x86_64-linux.tint2 = tint2custom;
            packages.x86_64-linux.pcmanfm = pcmanfmdesktop;
            packages.x86_64-linux.resethome = resethome;
            packages.x86_64-linux.sxhkd = sxhkdWrapped;
            packages.x86_64-linux.xcape = xcapeWrapped;
            defaultPackage.x86_64-linux = resethome;
        };
}