# Opam Ocaml

> OPAM package manager for OCaml. Switch management, dependency resolution, and OCaml toolchain.

- Skill: `plurigrid/opam-ocaml` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add plurigrid/opam-ocaml`
- Raw SKILL.md: https://api.skillmd.com/api/skills/plurigrid/opam-ocaml/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: plurigrid (https://skillmd.com/u/plurigrid)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/plurigrid/opam-ocaml

---


# OPAM OCaml Skill

**Trit**: -1 (MINUS - package constraint verification)  
**Foundation**: OPAM + OCaml + dune  

## Core Concept

OPAM manages OCaml development:
- Compiler switches (versions)
- Package dependencies
- Build system integration
- Repository management

## Common Commands

```bash
# Switch management
opam switch create 5.1.0
opam switch list
opam switch 5.1.0

# Package operations
opam install dune merlin ocaml-lsp-server
opam upgrade
opam remove <pkg>

# Environment
eval $(opam env)

# Repository
opam repo add coq-released https://coq.inria.fr/opam/released
```

## Dune Integration

```
; dune-project
(lang dune 3.0)
(name my_project)

; dune
(library
 (name my_lib)
 (libraries core))
```

## GF(3) Integration

```ocaml
type trit = Minus | Ergodic | Plus

let trit_of_build_status = function
  | Build_error _ -> Minus
  | Build_warning _ -> Ergodic
  | Build_success -> Plus

let gf3_conserved trits =
  let sum = List.fold_left (fun acc t ->
    acc + match t with Minus -> -1 | Ergodic -> 0 | Plus -> 1
  ) 0 trits in
  sum mod 3 = 0
```

## Canonical Triads

```
opam-ocaml (-1) ⊗ nickel (0) ⊗ geb (+1) = 0 ✓
opam-ocaml (-1) ⊗ lispsyntax-acset (0) ⊗ free-monad-gen (+1) = 0 ✓
```