By name: nix-migrate description: Migrate existing environment (dotfiles, packages, configs) to Nix/Home Manager. Comprehensive analysis and step-by-step migration.
Nix Migration Skill
1. Ask Approach
Use AskUserQuestion:
- Auto-scan - Scan environment and suggest migration
- Specify - User provides files/packages
2. Scan Environment
Config Files
Scan ~/.* and ~/.config/, skip ~/.local/state/, ~/.cache/.
Find non-Nix files (not symlinked to /nix/store/).
Classify:
- Structured (
.toml,.yaml,.json) → migratable - Binary → skip
- Permission 600 → credentials, warn
Packages
List explicitly installed (not deps):
| Manager | Command |
|---|---|
| apt | apt-mark showmanual |
| brew | brew list --installed-on-request |
| pacman | pacman -Qe |
| cargo | cargo install --list |
| npm | npm list -g --depth=0 |
| pip | pip list --not-required |
| nix-env | nix-env -q (migrate these!) |
3. Categorize & Recommend
Configs
| Has HM module? | Frequently edited? | → Use |
|---|---|---|
| Yes | - | programs.* |
| No | No | xdg.configFile |
| No | Yes | mkOutOfStoreSymlink |
Search modules: https://home-manager-options.extranix.com/
Packages
| Type | → Use |
|---|---|
| CLI tools | home.packages |
| Configurable (git, zsh) | programs.* |
| Language runtimes | mise |
| GUI apps (macOS) | Homebrew Cask |
| System services | Keep native or NixOS module |
4. Present Findings
## Migrate to programs.*
- ~/.gitconfig → programs.git
## Migrate to home.packages
- ripgrep (apt) → pkgs.ripgrep
## Use mkOutOfStoreSymlink
- ~/.config/nvim (frequently edited)
## Skip
- ~/.config/gh/hosts.yml (credentials)
## Keep as-is
- docker (system service)
5. Create Plan & Execute
- Use EnterPlanMode for approval
- Create
.nixfiles nix run .#fmt- Test:
home-manager build - Apply:
home-manager switch