l0ng-ai
0c54266d03
Run/Debug of a Java-only module that depends on a Kotlin/Groovy/Scala module in the same reactor launched with stale classes or failed with Unresolved compilation problem, and a successful Maven build was still reported with the old JDT compile errors. Root cause: the pre-launch external build only checked the launch module's own sources, and Maven shared target/classes with JDT autobuild. Fix: walk the launch module's reactor dependency closure (transitive, test scope aware) for non-Java sources; when found, run Maven from the reactor root (-pl <module> -am clean compile, test-compile for test launches) and block the launch on failure or cancel with the Maven errors in the console. JDT autobuild is paused while Maven runs and restored afterwards, and the launch uses a per-launch snapshot of the closure's output so JDT cannot overwrite it. A successful Maven build no longer shows the stale JDT warning. Pure Java projects and Gradle keep their previous path; the debugger adapter choice still follows the launch module. Verified on macOS with single- and multi-module Maven projects (new Kotlin values in Run and Debug, Kotlin error blocks the launch, cancel, pure Java does not invoke Maven). Editor type resolution for Kotlin in Java is handled separately. Part of #428
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.
Build
pnpm install
pnpm tauri dev
Rust 1.96, Node 22, pnpm and the Tauri prerequisites.
Native notebook execution tests are opt-in and need two distinct Python environments
with ipykernel installed:
OPENIDEA_TEST_PYTHON=/first/env/bin/python \
OPENIDEA_TEST_PYTHON_SECOND=/second/env/bin/python \
cargo test -p ide-notebook --test kernel_runtime -- --ignored --test-threads=1
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.