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nim-c-bindings

Standardize Nim-to-C bindings and native linking for cross-platform builds.

Updated Aug 27, 2026
Search Tags:#github actions#cross-platform#linking#ci#importc#nim#c bindings
One-click install
npx skills add https://github.com/planetis-m/skills_experiment --skill nim-c-bindings
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: nim-c-bindings
Source: https://github.com/planetis-m/skills_experiment/tree/main/original_skills/nim-c-bindings
Command: npx skills add https://github.com/planetis-m/skills_experiment --skill nim-c-bindings

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill prevents fragile Nim-to-C integrations by standardizing how you define bindings, link native libraries, and manage platform-specific runtime behavior across Linux, macOS, and Windows.

Core Features & Use Cases

  • Portable binding rules: Defines prescriptive conventions for importc, calling conventions, opaque handles, incomplete structs, and by-value passing.
  • Deterministic linking & runtime loading: Standardizes system vs local/third-party library linking, rpath usage, and placement of shared libraries for predictable execution.
  • Production-grade CI/release workflows: Provides copy-paste-ready GitHub Actions pipelines for cross-platform testing and tagged release artifacts.

Use case: You are wrapping a C library (vendored or system-installed) in Nim and need consistent builds plus reliable tests and release packaging without guesswork about include/lib paths, DLL placement, or CI toolchain mismatches.

Quick Start

Use the nim-c-bindings guidance to write or review your Nim importc bindings and to generate the matching GitHub Actions CI/release workflow for your target platforms.

Frequently Asked Questions about nim-c-bindings

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I write Nim importc bindings for C libraries that build reliably across platforms?▼

Nim importc bindings require standardized calling conventions, opaque handles, incomplete structs, and by-value passing rules to ensure cross-platform C compatibility. This Skill prescribes those conventions to prevent fragile native integrations.

What's the best way to link external C dependencies in Nim and handle runtime loading?▼

Linking external C dependencies in Nim requires standardizing system versus vendored library semantics, rpath configuration, and shared library placement. This ensures predictable execution and reliable runtime loading across Linux, macOS, and Windows.

Can I use GitHub Actions to build and test Nim C bindings for Linux, macOS, and Windows?▼

Yes, GitHub Actions can build and test Nim C bindings cross-platform using deterministic toolchains and flags. This Skill provides copy-paste-ready CI pipelines for testing and producing per-platform tagged release archives.

Why does my Nim project fail to find shared libraries at runtime when wrapping a C API?▼

Runtime loading failures in Nim projects wrapping C APIs often stem from incorrect rpath settings or improper shared library placement. Standardizing local versus system linking semantics ensures the executable locates dependencies predictably.

Do I need to vendor C libraries or use system-installed dependencies for Nim bindings?▼

You can use either vendored or system-installed C dependencies for Nim bindings. This Skill defines linking semantics for both approaches, ensuring correct include and library path resolution across different operating systems.

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