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dotfiles

Personal configuration files, managed with chezmoi. Uses Go templates for hostname-based multi-environment support across work and home machines.

Setup

Prerequisites: chezmoi, age, age-plugin-se, age-plugin-yubikey

chezmoi init git@github.com:USER/dotfiles.git
chezmoi apply --init

The --init flag regenerates the chezmoi config from the source template before applying, which is necessary on first run to configure the secrets backend.

Secrets management

Secrets (API URLs, server addresses) are stored in .chezmoisecrets.age — a YAML file encrypted with age. Each machine has a Secure Enclave key via age-plugin-se and a YubiKey backup via age-plugin-yubikey. The file is encrypted for all recipients, so any single key can decrypt it.

Chezmoi's [secret] config calls a wrapper script (chezmoi-secrets) that decrypts and outputs the YAML. Templates access values with:

{{ (secret | fromYaml).some_key | quote }}

Generating keys

Secure Enclave:

mkdir -p ~/.config/chezmoi
age-plugin-se keygen -o ~/.config/chezmoi/age-identity.txt

YubiKey:

age-plugin-yubikey
# Save identity output to ~/.config/chezmoi/age-identity-yubikey.txt

Add both recipient lines (from the identity files) to .chezmoisecrets-recipients.txt in the repo root.

Creating initial secrets

chezmoi-secrets edit

This opens your $EDITOR with an empty file. Write your secrets as YAML:

atuin_sync_server: https://atuin.example.com
mealplan_url: https://mealplan.example.com/api

Save and close. The script encrypts to all recipients and writes .chezmoisecrets.age.

Adding a new machine

  1. On the new machine, generate SE and YubiKey identities (see above)
  2. On an existing machine, add the new recipient lines to .chezmoisecrets-recipients.txt
  3. Re-encrypt for all recipients — run chezmoi-secrets edit, save without changes
  4. Commit and push .chezmoisecrets.age and .chezmoisecrets-recipients.txt
  5. On the new machine:
chezmoi init git@github.com:USER/dotfiles.git
chezmoi apply --init

Updating secrets

chezmoi-secrets edit    # modify values, save
chezmoi diff            # verify rendered templates

Commit .chezmoisecrets.age and push. Other machines pick up changes on next chezmoi update.