libplasmoid-updater 0.1.4

Library for updating KDE Plasma 6 components from the KDE Store. Meant for use in topgrade.
Documentation

libplasmoid-updater

A Rust library for managing KDE Plasma 6 components from the KDE Store.

[!IMPORTANT] The core logic (combination of Apdatifier and KDE Discover + custom fixes) was ported to Rust in majority with AI assistance. I audited the generated code, refactored, fixed obvious bugs, and tested it myself. Open to contributions on GitHub.

Requirements

Runtime dependencies:

  • bsdtar – Archive extraction
  • kpackagetool6 – KDE package installation

Features

  • Component Discovery – Detects installed Plasmoids and other Plasma components
  • Multithreaded update check and installation
  • Automatic Backups and rollback
  • Registry Integration – Maintains KNewStuff registry compatibility
  • Plasma 6 Support – Compatible with Plasma 6.0 and later

Supported Components

Plasma Widgets, Wallpaper Plugins, KWin Effects/Scripts, Global Themes, Plasma Styles, Color Schemes, Splash Screens, SDDM Themes, and Aurorae Decorations.

API

Functions

function description
check(&Config) -> Result<CheckResult, CheckError> scan for available updates to installed KDE components
update(&Config) -> Result<UpdateResult, UpdateError> apply available updates (interactive or automatic)
show_installed(&Config) -> Result<()> print a table of all installed KDE components (cli)
get_installed(&Config) -> Result<Vec<InstalledComponent>> returns all installed KDE components; no network calls
install_update(&AvailableUpdate) -> Result<()> installs a single component update with backup/rollback

Config

Built with a builder pattern via Config::new():

method description
with_system(bool) scan system-wide components in /usr/share (requires root)
with_excluded_packages(Vec<String>) skip these packages (by dir name or display name)
with_widgets_id_table(HashMap<String, u64>) override fallback dir→content-ID mapping
with_restart(RestartBehavior) plasmashell restart behavior after updates
with_yes(bool) auto-confirm without interactive prompts
Config::parse_widgets_id(&str) parse a widgets-id file into the fallback table format

Types

RestartBehavior — Never (default) | Always | Prompt

CheckResult — returned by check():

  • available_updates: Vec<AvailableUpdateInfo> — list of updates found
  • diagnostics: Vec<(String, String)> — components that could not be checked (name, reason)
  • has_updates() -> bool, update_count() -> usize

AvailableUpdateInfo — fields: name, directory_name, current_version, available_version, component_type, content_id, download_size: Option<u64>

ComponentType — enum of all supported KDE component kinds:

  • variants: PlasmaWidget, WallpaperPlugin, KWinEffect, KWinScript, KWinSwitcher, GlobalTheme, PlasmaStyle, AuroraeDecoration, ColorScheme, SplashScreen, SddmTheme, IconTheme, Wallpaper
  • user_path() -> PathBuf, system_path() -> PathBuf, all() -> &[ComponentType], all_user() -> &[ComponentType]

InstalledComponent — a KDE component installed on the local system:

  • fields: name, directory_name, version, component_type: ComponentType, path: PathBuf, is_system: bool, release_date

AvailableUpdate — an available update with download metadata:

  • fields: installed: InstalledComponent, content_id: u64, latest_version, download_url, store_url, release_date, checksum: Option<String>, download_size: Option<u64>

UpdateResult — returned by update():

  • succeeded: Vec<String>, failed: Vec<(String, String)>, skipped: Vec<String>
  • has_failures() -> bool, is_empty() -> bool
  • print_summary(), print_error_table() — requires cli feature

CheckError — UnsupportedOS(String) | NotKDE | Other(Box<dyn Error>)

UpdateError — Check(CheckError) | Other(Box<dyn Error>)

Error — base library error type; Result<T> aliases Result<T, Error>

Cargo Features

This library provides optional features to reduce compile times and dependencies for different use cases:

  • cli (optional) – Enables CLI-specific functionality including terminal output formatting, progress indicators, and interactive prompts. Required for show_installed(), UpdateResult::print_summary(), and UpdateResult::print_error_table(). Also enables terminal output (spinner, tables, interactive selection) in check() and update().

By default, no features are enabled. The core library functionality (update checking and installation) is always available.

Using the CLI feature

[dependencies]
libplasmoid-updater = { version = "0.1", features = ["cli"] }

CLI Tool

As a reference CLI-tool implementation, see plasmoid-updater binary crate.

License

Licensed under GPL-3.0-or-later.