l0ng-ai
78e0c7a23e
Plugin API (breaking; the plugin system is unreleased): - Remove the runtime `contributions` interface (register-command, register-language, register-theme). Commands, languages and themes are declared in plugin.toml only, so everything a plugin contributes goes through the install preview and consent. The registry drops runtime scope, `contribute` and `dispose_runtime`; inline `definition` in language and theme declarations is gone. - `completion-item.kind` is a string (the 25 LSP kinds; unknown kinds show no icon), like the other open-ended kinds. - `lifecycle.activate` and `commands.run` return `types.error` instead of a string. The host maps it to the matching error kind, and only `failed` counts against the plugin: cancelling, a missing grant or an unknown command does not. The SDK's `Plugin` returns `Result<_, Error>`; plain messages convert to `Error::Failed`. Runtime: - Editor providers of several plugins are called at the same time (`Actor::submit` + `Pending::wait`): the wait is the slowest plugin's, not the sum, so each gets the full edit-path budget. Versioning and tooling: - Components are checked at install and by `openidea-plugin check` for the plugin API they were built for; another major or a newer minor is refused with what to do. - Tests: the SDK's WIT matches the host's, a simulated next-minor host links every shipped component, every host function has an SDK wrapper, released APIs only grow (no snapshot until the first release). - plugins/build.sh builds every checked-in component, records a source fingerprint next to it, and `--check` fails on stale components; CI runs it plus fmt, clippy (host and wasm) and tests for the SDK, the official plugins and the fixtures. - The API evolution rules and the checklist for a new host function are in plugins/README.md; the design notes under docs/ are removed.
The IDE you know, rebuilt in Rust.
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https://github.com/user-attachments/assets/234dd54c-1255-4b3a-b35c-533d78d737c0
OpenIDEA brings the IntelliJ IDEA way of working — its keymap, its tool windows, its search-everything habits — to a native app with a Rust core.
Editor, code insight, debugger, Git, terminal, database and HTTP clients, for 60+ languages. Builds for macOS, Windows and Linux.
Benchmark
Opening freqtrade (Python, ~770 files) with warm caches, median of 5 runs:
| OpenIDEA | IntelliJ IDEA 2026.2.3 | |
|---|---|---|
| Window with the project | 0.9 s | 3.1 s |
| Ready (CPU settled) | 1.1 s | 13.2 s |
| Memory (USS, all processes) | 169 MB | 2011 MB |
| CPU time until ready | 2.4 s | 47.9 s |
| Idle CPU | 4 % of a core | 7 % of a core |
| Quit | 0.3 s | 5.9 s |
A release build of OpenIDEA from main and IDEA with default settings and plugins, on
Windows 11, 32-core AMD, 62 GB RAM.
IDEA analyses Python more deeply, so "ready" doesn't mean the same work on
both sides. Both are measured from the outside, the same way: see
perf/compare to run it on your machine and projects.
License
Apache 2.0. Bundled third-party assets are listed in THIRD_PARTY_LICENSES.md.
Not affiliated with JetBrains. IntelliJ IDEA is a trademark of JetBrains s.r.o.