DankMaterialShell/core

DMS Backend & CLI

Go-based backend for DankMaterialShell providing system integration, IPC, and installation tools.

See root README for project overview and installation.

Components

dms CLI Command-line interface and daemon for shell management and system control.

dankinstall Distribution-aware installer for deploying DMS and compositor configurations on Arch, Fedora, Debian, Ubuntu, openSUSE, and Gentoo. Supports both an interactive TUI and a headless (unattended) mode via CLI flags.

System Integration

Wayland Protocols (Client)

All Wayland protocols are consumed as a client - connecting to the compositor.

Protocol	Purpose
wlr-gamma-control-unstable-v1	Night mode color temperature control
wlr-screencopy-unstable-v1	Screen capture for color picker/screenshot
wlr-layer-shell-unstable-v1	Overlay surfaces for color picker UI/screenshot
wlr-output-management-unstable-v1	Display configuration
wlr-output-power-management-unstable-v1	DPMS on/off CLI
wp-viewporter	Fractional scaling support (color picker/screenshot UIs)
keyboard-shortcuts-inhibit-unstable-v1	Inhibit compositor shortcuts during color picker/screenshot
ext-data-control-v1	Clipboard history and persistence
ext-workspace-v1	Workspace integration
dwl-ipc-unstable-v2	dwl/MangoWC IPC for tags, outputs, etc.

DBus Interfaces

Client (consuming external services):

Interface	Purpose
org.bluez	Bluetooth management with pairing agent
org.freedesktop.NetworkManager	Network management
net.connman.iwd	iwd Wi-Fi backend
org.freedesktop.network1	systemd-networkd integration
org.freedesktop.login1	Session control, sleep inhibitors, brightness
org.freedesktop.Accounts	User account information
org.freedesktop.portal.Desktop	Desktop appearance settings (color scheme)
CUPS via IPP + D-Bus	Printer management with job notifications

Server (implementing interfaces):

Interface	Purpose
org.freedesktop.ScreenSaver	Screensaver inhibit for video playback

Custom IPC via unix socket (JSON API) for shell communication.

Hardware Control

Subsystem	Method	Purpose
DDC/CI	I2C direct	External monitor brightness
Backlight	logind or sysfs	Internal display brightness
evdev	/dev/input/event*	Keyboard state (caps lock LED)
udev	netlink monitor	Backlight device updates (for OSD)

Plugin System

• Plugin registry integration
• Plugin lifecycle management
• Settings persistence

CLI Commands

• dms run [-d] - Start shell (optionally as daemon)
• dms restart / dms kill - Manage running processes
• dms ipc <command> - Send IPC commands (toggle launcher, notifications, etc.)
• dms plugins [install|browse|search] - Plugin management
• dms brightness [list|set] - Control display/monitor brightness
• dms color pick - Native color picker (see below)
• dms update - Update DMS and dependencies (disabled in distro packages)
• dms greeter install - Install greetd greeter (disabled in distro packages)

Color Picker

Native Wayland color picker with magnifier, no external dependencies. Supports HiDPI and fractional scaling.

dms color pick              # Pick color, output hex
dms color pick --rgb        # Output as RGB (255 128 64)
dms color pick --hsv        # Output as HSV (24 75% 100%)
dms color pick --json       # Output all formats as JSON
dms color pick -a           # Auto-copy to clipboard

The on-screen preview displays the selected format. JSON output includes hex, RGB, HSL, HSV, and CMYK values.

Building

Requires Go 1.25+

Development build:

make              # Build dms CLI
make dankinstall  # Build installer
make test         # Run tests

Distribution build:

make dist         # Build without update/greeter features

Produces bin/dms-linux-amd64 and bin/dms-linux-arm64

Installation:

sudo make install  # Install to /usr/local/bin/dms

Development

Setup pre-commit hooks:

git config core.hooksPath .githooks

This runs gofmt, golangci-lint, tests, and builds before each commit when core/ files are staged.

Regenerating Wayland Protocol Bindings:

go install github.com/rajveermalviya/go-wayland/cmd/go-wayland-scanner@latest
go-wayland-scanner -i internal/proto/xml/wlr-gamma-control-unstable-v1.xml \
  -pkg wlr_gamma_control -o internal/proto/wlr_gamma_control/gamma_control.go

Module Structure:

• cmd/ - Binary entrypoints (dms, dankinstall)
• internal/distros/ - Distribution-specific installation logic
• internal/proto/ - Wayland protocol bindings
• pkg/ - Shared packages

Installation via dankinstall

Interactive (TUI):

curl -fsSL https://install.danklinux.com | sh

Headless (unattended):

Headless mode requires cached sudo credentials. Run sudo -v first:

sudo -v && curl -fsSL https://install.danklinux.com | sh -s -- -c niri -t ghostty -y
sudo -v && curl -fsSL https://install.danklinux.com | sh -s -- -c hyprland -t kitty --include-deps dms-greeter -y

Flag	Short	Description
`--compositor <niri	hyprland>`	-c
`--term <ghostty	kitty	alacritty>`
--include-deps <name,...>		Enable optional dependencies (e.g. dms-greeter)
--exclude-deps <name,...>		Skip specific dependencies
--replace-configs <name,...>		Replace specific configuration files (mutually exclusive with --replace-configs-all)
--replace-configs-all		Replace all configuration files (mutually exclusive with --replace-configs)
--yes	-y	Required for headless mode — confirms installation without interactive prompts

Headless mode requires --yes to proceed; without it, the installer exits with an error. Configuration files are not replaced by default unless --replace-configs or --replace-configs-all is specified. dms-greeter is disabled by default; use --include-deps dms-greeter to enable it.

When no flags are provided, dankinstall launches the interactive TUI.

Headless mode validation rules

Headless mode activates when --compositor or --term is provided.

• Both --compositor and --term are required; providing only one results in an error.
• Headless-only flags (--include-deps, --exclude-deps, --replace-configs, --replace-configs-all, --yes) are rejected in TUI mode.
• Positional arguments are not accepted.

Log file location

dankinstall writes logs to /tmp by default. Set the DANKINSTALL_LOG_DIR environment variable to override the log directory.

Supported Distributions

Arch, Fedora, Debian, Ubuntu, openSUSE, Gentoo (and derivatives)

Arch Linux Uses pacman for system packages, builds AUR packages via makepkg, no AUR helper dependency.

Fedora

Uses COPR repositories (avengemedia/danklinux, avengemedia/dms).

Ubuntu Requires PPA support. Most packages built from source (slow first install).

Debian Debian 13+ (Trixie). niri only, no Hyprland support. Builds from source.

openSUSE Most packages available in standard repos. Minimal building required.

Gentoo Uses Portage with GURU overlay. Automatically configures USE flags. Variable success depending on system configuration.

See installer output for distribution-specific details during installation.