163 lines
4.4 KiB
Markdown
163 lines
4.4 KiB
Markdown
---
|
|
name: m11-ecosystem
|
|
description: "Use when integrating crates or ecosystem questions. Keywords: E0425, E0433, E0603, crate, cargo, dependency, feature flag, workspace, which crate to use, using external C libraries, creating Python extensions, PyO3, wasm, WebAssembly, bindgen, cbindgen, napi-rs, cannot find, private, crate recommendation, best crate for, Cargo.toml, features, crate 推荐, 依赖管理, 特性标志, 工作空间, Python 绑定"
|
|
user-invocable: false
|
|
---
|
|
|
|
## Current Dependencies (Auto-Injected)
|
|
|
|
!`grep -A 100 '^\[dependencies\]' Cargo.toml 2>/dev/null | head -30 || echo "No Cargo.toml found"`
|
|
|
|
---
|
|
|
|
# Ecosystem Integration
|
|
|
|
> **Layer 2: Design Choices**
|
|
|
|
## Core Question
|
|
|
|
**What's the right crate for this job, and how should it integrate?**
|
|
|
|
Before adding dependencies:
|
|
- Is there a standard solution?
|
|
- What's the maintenance status?
|
|
- What's the API stability?
|
|
|
|
---
|
|
|
|
## Integration Decision → Implementation
|
|
|
|
| Need | Choice | Crates |
|
|
|------|--------|--------|
|
|
| Serialization | Derive-based | serde, serde_json |
|
|
| Async runtime | tokio or async-std | tokio (most popular) |
|
|
| HTTP client | Ergonomic | reqwest |
|
|
| HTTP server | Modern | axum, actix-web |
|
|
| Database | SQL or ORM | sqlx, diesel |
|
|
| CLI parsing | Derive-based | clap |
|
|
| Error handling | App vs lib | anyhow, thiserror |
|
|
| Logging | Facade | tracing, log |
|
|
|
|
---
|
|
|
|
## Thinking Prompt
|
|
|
|
Before adding a dependency:
|
|
|
|
1. **Is it well-maintained?**
|
|
- Recent commits?
|
|
- Active issue response?
|
|
- Breaking changes frequency?
|
|
|
|
2. **What's the scope?**
|
|
- Do you need the full crate or just a feature?
|
|
- Can feature flags reduce bloat?
|
|
|
|
3. **How does it integrate?**
|
|
- Trait-based or concrete types?
|
|
- Sync or async?
|
|
- What bounds does it require?
|
|
|
|
---
|
|
|
|
## Trace Up ↑
|
|
|
|
To domain constraints (Layer 3):
|
|
|
|
```
|
|
"Which HTTP framework should I use?"
|
|
↑ Ask: What are the performance requirements?
|
|
↑ Check: domain-web (latency, throughput needs)
|
|
↑ Check: Team expertise (familiarity with framework)
|
|
```
|
|
|
|
| Question | Trace To | Ask |
|
|
|----------|----------|-----|
|
|
| Framework choice | domain-* | What constraints matter? |
|
|
| Library vs build | domain-* | What's the deployment model? |
|
|
| API design | domain-* | Who are the consumers? |
|
|
|
|
---
|
|
|
|
## Trace Down ↓
|
|
|
|
To implementation (Layer 1):
|
|
|
|
```
|
|
"Integrate external crate"
|
|
↓ m04-zero-cost: Trait bounds and generics
|
|
↓ m06-error-handling: Error type compatibility
|
|
|
|
"FFI integration"
|
|
↓ unsafe-checker: Safety requirements
|
|
↓ m12-lifecycle: Resource cleanup
|
|
```
|
|
|
|
---
|
|
|
|
## Quick Reference
|
|
|
|
### Language Interop
|
|
|
|
| Integration | Crate/Tool | Use Case |
|
|
|-------------|------------|----------|
|
|
| C/C++ → Rust | `bindgen` | Auto-generate bindings |
|
|
| Rust → C | `cbindgen` | Export C headers |
|
|
| Python ↔ Rust | `pyo3` | Python extensions |
|
|
| Node.js ↔ Rust | `napi-rs` | Node addons |
|
|
| WebAssembly | `wasm-bindgen` | Browser/WASI |
|
|
|
|
### Cargo Features
|
|
|
|
| Feature | Purpose |
|
|
|---------|---------|
|
|
| `[features]` | Optional functionality |
|
|
| `default = [...]` | Default features |
|
|
| `feature = "serde"` | Conditional deps |
|
|
| `[workspace]` | Multi-crate projects |
|
|
|
|
## Error Code Reference
|
|
|
|
| Error | Cause | Fix |
|
|
|-------|-------|-----|
|
|
| E0433 | Can't find crate | Add to Cargo.toml |
|
|
| E0603 | Private item | Check crate docs |
|
|
| Feature not enabled | Optional feature | Enable in `features` |
|
|
| Version conflict | Incompatible deps | `cargo update` or pin |
|
|
| Duplicate types | Different crate versions | Unify in workspace |
|
|
|
|
---
|
|
|
|
## Crate Selection Criteria
|
|
|
|
| Criterion | Good Sign | Warning Sign |
|
|
|-----------|-----------|--------------|
|
|
| Maintenance | Recent commits | Years inactive |
|
|
| Community | Active issues/PRs | No response |
|
|
| Documentation | Examples, API docs | Minimal docs |
|
|
| Stability | Semantic versioning | Frequent breaking |
|
|
| Dependencies | Minimal, well-known | Heavy, obscure |
|
|
|
|
---
|
|
|
|
## Anti-Patterns
|
|
|
|
| Anti-Pattern | Why Bad | Better |
|
|
|--------------|---------|--------|
|
|
| `extern crate` | Outdated (2018+) | Just `use` |
|
|
| `#[macro_use]` | Global pollution | Explicit import |
|
|
| Wildcard deps `*` | Unpredictable | Specific versions |
|
|
| Too many deps | Supply chain risk | Evaluate necessity |
|
|
| Vendoring everything | Maintenance burden | Trust crates.io |
|
|
|
|
---
|
|
|
|
## Related Skills
|
|
|
|
| When | See |
|
|
|------|-----|
|
|
| Error type design | m06-error-handling |
|
|
| Trait integration | m04-zero-cost |
|
|
| FFI safety | unsafe-checker |
|
|
| Resource management | m12-lifecycle |
|