alda を Homebrew, apk, Nix でインストール

プロジェクトリンク

• ホームページ
• リポジトリ
• 上流ドキュメント
• パッケージマネージャページ

コマンドとエイリアス

• alda
• alda-player

プロジェクトの歴史

The project is presented by its maintainers as a language for composing and playing music using only a text editor and the command line. The official site and README emphasize a markup-like syntax, General MIDI playback, examples, and an interactive REPL, positioning Alda as a music language that is approachable to musicians and still scriptable enough for programmers.

Alda's repository and site carry a 2012-2026 copyright notice for Dave Yarwood and contributors. The modern codebase is split into an `alda` client and `alda-player` playback process. Alda 2.0.0, released in June 2021, was a from-scratch rewrite in Go and Kotlin after the first generation had been mostly Clojure with a small Java client. The migration guide says Alda 2 kept the language mostly compatible while removing inline Clojure evaluation and introducing the separate player process.

Subsequent Alda 2 releases show ongoing package-maintainer concerns: player-process recovery, log4j security updates, `alda doctor`, MusicXML import, deterministic MIDI channel assignment, ARM Linux support, and memory reductions for lower-RAM devices such as Raspberry Pi.

採用の歴史

Alda is distributed through several package managers in the supplied package facts, including Homebrew, apk, and Nix. Its official README points users to the website for installation, while also documenting source builds for the Go client and Kotlin/Java player.

The project also maintains community surfaces for package users rather than only library consumers: official docs, examples, a cheat sheet, a Slack group, a subreddit, and a REPL workflow. That makes it recognizable in CLI package indexes as a real end-user tool, not merely a language experiment.

使われ方

Typical use is `alda play --file score.alda`, `alda play --code "piano: c6 d12 e6 g12~4"`, or `alda repl` for interactive composition. Scores are text files, so users naturally keep them in version control, edit them with ordinary editors, and run them from scripts.

Alda's more advanced usage includes programmatic composition, MIDI export/import workflows, and multi-process playback. In Alda 2, the CLI starts `alda-player` as needed and provides diagnostic commands such as `alda doctor` to help with audio and player-process setup.

パッケージ好きにとっての重要性

Alda is package-nerd interesting because it packages a whole creative runtime as a pair of CLI executables rather than as a GUI application. It depends on the host audio stack, JVM/player behavior, architecture-specific binaries, and language-level compatibility, all of which show up in changelog entries that matter to distro maintainers.

It also demonstrates the classic text-tool value proposition: a domain that is normally graphical, music notation and playback, becomes inspectable, diffable, scriptable, and automatable.

タイムライン

• 2012: Project copyright period begins in official site and README notices.
• 2015: Official docs link Dave Yarwood's text-based music composition manifesto.
• 2021-06-30: Alda 2.0.0 released as a Go and Kotlin rewrite.
• 2023-05-07: Alda 2.2.5 added MusicXML import.
• 2024-06-22: Alda 2.3.0 reworked MIDI channel assignment.
• 2025-09-19: Alda 2.3.3 added broader Linux ARM support.
• 2026-05-12: Alda 2.4.3 reduced player memory usage.

Related projects

• Alda's own migration guide identifies Alda 1 as the mostly Clojure predecessor and `alda-clj` as a Clojure DSL for algorithmic music that preserves part of the earlier Clojure-oriented workflow.
• The docs connect Alda to General MIDI, MusicXML import, editor plugins, and the nREPL-inspired REPL client/server model.

ソース

• https://alda.io/
• https://github.com/alda-lang/alda/blob/master/CHANGELOG.md
• https://github.com/alda-lang/alda/blob/master/README.md
• https://github.com/alda-lang/alda/blob/master/doc/alda-2-migration-guide.md
• https://github.com/alda-lang/alda/blob/master/doc/index.md
• source_facts.package-manager