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local-dev-environment

Use when working with Will's dotfiles, Nix/Home Manager setup, direnv project environments, Brave remote debugging, local trade-tariff ports, or local service assumptions on this machine.

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Overview

Use when working with Will's dotfiles, Nix/Home Manager setup, direnv project environments, Brave remote debugging, local trade-tariff ports, or local service assumptions on this machine.

Install command

npx skills add https://github.com/willfish/nix --skill local-dev-environment

Copy and paste this command into Claude Code to install the skill

Source

willfish/nix

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UpdatedJune 3, 2026 at 19:52

SKILL.md

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name	local-dev-environment
description	Use when working with Will's dotfiles, Nix/Home Manager setup, direnv project environments, Brave remote debugging, local trade-tariff ports, or local service assumptions on this machine.

Local Dev Environment

Use this for machine-specific workflow details.

Key facts:

Dotfiles repo: ~/.dotfiles.
Flake: ~/.dotfiles/flake.nix.
Home Manager package list: ~/.dotfiles/home/user/packages.nix.
Program config: ~/.dotfiles/home/user/programs.nix.
Projects generally use Nix plus direnv for dependencies and services.
For project commands, prefer direnv exec <project-path> <command> or run from the project after direnv activation.
Do not assume services are stopped just because a connection fails; the project environment may not be activated.
Brave remote debugging is expected on http://127.0.0.1:9222 when Brave is running.

Home attribute (always explicit on every host): homeConfigurations exposes platform-level attributes (william-darwin, william-linux) and per-host attributes (william@andromeda, william@foundation, william@starfish). The bare william attribute defaults to the Linux config and will produce confusing x86_64-linux build failures (adw-gtk3 fish-completions, dconf-keys) on a Mac. Pick the right one for the current host — don't guess; verify with nix eval '.#homeConfigurations' --apply 'builtins.attrNames' if unsure:

# macOS host:
nix build .#homeConfigurations.william-darwin.activationPackage
nh home switch '.#william-darwin'

# Linux host:
nix build .#homeConfigurations.william-linux.activationPackage
nh home switch '.#william-linux'

# Per-host (if a `william@<hostname>` attribute is defined for this machine):
nix build .#homeConfigurations."william@$(hostname)".activationPackage
nh home switch ".#william@$(hostname)"

nh home switch . (no attribute) also works because nh auto-detects from the current host, but the explicit form is the safer reflex when working on a new box. Never nh home switch #william-darwin (or any other #attr form) without a leading . — the shell treats # as a comment character and the suffix gets dropped, breaking the command silently.

Trade Tariff local ports:

backend: 3000
frontend: 3001
duty-calculator: 3002
admin: 3003
dev-hub: 3004
identity: 3005

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Source

willfish

willfish/nix

View GitHub Repository View Creator Repositories

Install command

Download

Run Skill in Manus

Useful forSOC

Software DevelopersComputer and Mathematical Occupations15-1252L4

name	local-dev-environment
description	Use when working with Will's dotfiles, Nix/Home Manager setup, direnv project environments, Brave remote debugging, local trade-tariff ports, or local service assumptions on this machine.

Local Dev Environment

Use this for machine-specific workflow details.

Key facts:

Dotfiles repo: ~/.dotfiles.
Flake: ~/.dotfiles/flake.nix.
Home Manager package list: ~/.dotfiles/home/user/packages.nix.
Program config: ~/.dotfiles/home/user/programs.nix.
Projects generally use Nix plus direnv for dependencies and services.
For project commands, prefer direnv exec <project-path> <command> or run from the project after direnv activation.
Do not assume services are stopped just because a connection fails; the project environment may not be activated.
Brave remote debugging is expected on http://127.0.0.1:9222 when Brave is running.

# macOS host:
nix build .#homeConfigurations.william-darwin.activationPackage
nh home switch '.#william-darwin'

# Linux host:
nix build .#homeConfigurations.william-linux.activationPackage
nh home switch '.#william-linux'

# Per-host (if a `william@<hostname>` attribute is defined for this machine):
nix build .#homeConfigurations."william@$(hostname)".activationPackage
nh home switch ".#william@$(hostname)"

Trade Tariff local ports:

backend: 3000
frontend: 3001
duty-calculator: 3002
admin: 3003
dev-hub: 3004
identity: 3005