Systems & developer tools
btop Rust Port
Translate a mature systems tool without losing its behavior.
- Status
- Active development
- My role
- Rust porting, compatibility analysis, and test implementation
- Timeframe
- 2026 - present
- Core technology
- Rust · C++ · Cargo · libc
A public source or demo is not currently listed. The case study documents the evidence available for this project.
01 / Context
The problem
Reimplementing a mature C++ systems tool requires more than translating syntax: behavior, terminal details, platform differences, and edge cases must remain traceable.
02 / Product
The implemented solution
The port progresses module by module, using the original implementation as a behavioral reference and recording mappings, unsafe boundaries, open questions, and compilation status.
03 / System
Architecture, in plain language
Rust modules separate CLI, configuration, logging, terminal utilities, and shared CPU, memory, network, GPU, and process state while platform adapters isolate operating-system concerns.
04 / Judgment
Important decisions
- Prioritized compatibility before idiomatic refactoring.
- Recorded uncertain translations explicitly instead of hiding gaps behind compilation success.
- Used tests to lock down shared utilities before expanding the interface.
05 / Boundaries
Limitations and next work
This is an ongoing port of an upstream open-source project, not an original btop product. Compatibility is incomplete and the upstream project remains clearly attributed.
06 / Implementation
Focused technology
Rust · C++ · Cargo · libc · nix · Cross-platform APIs