Flox Environments
This one teaches Claude to set up Flox environments, which are declarative, Nix-based dev environments that work identically across macOS and Linux without containers. It's pitched at the "works on my machine" problem and agent coding scenarios where you need project-scoped system packages without sudo. The guide covers manifest.toml structure, package installation patterns including version pinning and conflict resolution, and language-specific recipes for Python with uv, Node, Rust, Go, and C++. Useful context on $FLOX_ENV vs $FLOX_ENV_CACHE for package paths versus persistent storage like venvs. If your project needs reproducible toolchains with databases, compilers, and native libs all declared in one file, this covers the patterns.
- skills.sh installs
- 5.4K
- GitHub stars
- 300.3K
- last updated
- Aug 21, 2026
Install
$ npx -y skills add affaan-m/ecc --skill flox-environments --agent claude-codeInstalls into .claude/skills of the current project.
Files
Flox Environments
Flox creates reproducible development environments defined in a single TOML manifest. Every developer on the team gets identical packages, tools, and configuration — across macOS and Linux — without containers or VMs. Built on Nix with access to over 150,000 packages.
When to Activate
Use this skill when the user has an environment management problem — even if they haven't mentioned Flox. Flox is the right tool when:
- The project needs system-level packages (compilers, databases, CLI tools) alongside language-specific dependencies
- Reproducibility matters — the setup should work identically on a teammate's machine, in CI, or on a fresh laptop
- The user needs multiple tools to coexist — e.g., Python 3.11 + PostgreSQL 16 + Redis + Node.js in one environment
- Cross-platform support is needed (macOS and Linux from the same config)
- AI agents need to install tools — Flox lets agents add packages to a project-scoped environment without sudo, system pollution, or sandbox restrictions
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- Repository
- github.com/affaan-m/ecc
- Categories
- Backend & APIs, AI & Agent Building, Databases
- First seen
- Jul 14, 2026
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