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Elixir development guidance for creating, modifying, reviewing, testing, and debugging Elixir and Phoenix applications. Use when tasks involve .ex or .exs files, mix.exs, Phoenix, LiveView, Ecto, OTP supervision trees, GenServer, ExUnit, mix format, mix test, migrations, schemas, contexts, or Elixir dependency management.
Go development guidance for creating, modifying, reviewing, testing, and debugging Go services, libraries, CLIs, and tooling. Use when tasks involve .go files, go.mod, go.work, goroutines, channels, contexts, HTTP handlers, database code, table tests, gofmt, go test, or Go module management.
Node.js and JavaScript/TypeScript development guidance for creating, modifying, reviewing, testing, packaging, and debugging backend, CLI, tooling, and full-stack code. Use when tasks involve package.json, npm, pnpm, yarn, bun, .js, .mjs, .cjs, .ts, tsconfig, Express, NestJS, Next.js API routes, Vitest, Jest, ESLint, or Node dependency management.
Python development guidance for creating, modifying, reviewing, testing, packaging, and debugging Python code. Use when tasks involve .py files, pyproject.toml, requirements files, pytest, ruff, mypy, FastAPI, Django, Flask, CLIs, scripts, type hints, virtual environments, or Python dependency management.
Rust development guidance for creating, modifying, reviewing, testing, packaging, and debugging Rust crates, CLIs, services, and libraries. Use when tasks involve .rs files, Cargo.toml, Cargo.lock, workspaces, ownership, lifetimes, traits, async Rust, tokio, serde, cargo fmt, cargo test, cargo clippy, or Rust dependency management.
Analyze a codebase before changing it, infer local patterns, and choose focused implementation and verification steps.
Planning discipline for long-running Deep Agent tasks with delegation, task tracking, validation, and concise delivery.
| name | elixir-programming |
| description | Elixir development guidance for creating, modifying, reviewing, testing, and debugging Elixir and Phoenix applications. Use when tasks involve .ex or .exs files, mix.exs, Phoenix, LiveView, Ecto, OTP supervision trees, GenServer, ExUnit, mix format, mix test, migrations, schemas, contexts, or Elixir dependency management. |
Make idiomatic Elixir changes that preserve clear data flow, OTP boundaries, and project conventions.
mix.exs, .formatter.exs, config files, supervision trees, contexts,
schemas, and nearby tests before editing.{:ok, value} and {:error, reason} consistently where the project
uses result tuples.mix format for changed Elixir files.mix test path/to/test.exs first, then broader mix test when
shared behavior changed.mix compile --warnings-as-errors when the project or CI expects warning
cleanliness.