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nixos/scripts/lib/ssh-host-keys.sh
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beatzaplentyandClaude Sonnet 5 d8687d979c
Check NixOS configurations / eval-hosts (pull_request) Failing after 30m6s
Reorganize scripts/ into secrets/, proxmox/, and lib/ subfolders
scripts/ had grown to 10 top-level scripts covering three distinct
concerns (sops/age + SSH host-key management, Proxmox deployment, and
repo-wide bootstrap/CI) with no grouping. Move the key-management scripts
(backup-admin-key.sh, rotate-admin-key.sh, prepare-host-key.sh,
sync-host-keys.sh) into scripts/secrets/, and the Proxmox scripts
(create-proxmox-resource.sh, configure-nix-cache-client.sh) into
scripts/proxmox/; leave env.sh, codex-setup.sh, codex-maintenance.sh, and
bump-nixpkgs-release.sh at the top level (frequently hand-typed or pure
shared config) and scripts/lib/ as-is.

Updates every cross-reference: each moved script's repo_root computation
(now one directory deeper), shellcheck source= directives, inter-script
paths (create-proxmox-resource.sh's call into sync-host-keys.sh and its
remote bootstrap of configure-nix-cache-client.sh on the Proxmox node),
and every doc/module mention (CLAUDE.md's Scripts section reorganized to
match, README.md, docs/auto-installer.md, docs/proxmox-images.md,
modules/installer/common.nix, modules/platforms/lxc.nix). CI workflows
need no change -- they only invoke codex-maintenance.sh, which didn't
move. Verified via bash -n, shellcheck (no new warnings beyond the
pre-existing SC1091/SC2029/SC2095 baseline), and live dry-runs of
sync-host-keys.sh --all and create-proxmox-resource.sh --list from their
new paths.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-20 16:20:45 +00:00

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#!/usr/bin/env bash
# Shared SSH-host-key / age-conversion helpers for scripts/secrets/sync-host-keys.sh
# and scripts/secrets/prepare-host-key.sh -- both generate the same kind of key
# (ed25519, no passphrase, the sops-nix age-derivation input) and convert it
# to an age recipient the same way; kept in one place so the two can't
# drift apart.
#
# Uses NIX_OPTS (an array of extra `nix-shell` options -- see env.sh's
# nix_extra_opts) if the caller has already set it, so a decision to avoid
# an unreachable nix-cache is reused here instead of probed again. Falls
# back to no extra options if the caller never sourced env.sh.
if ! declare -p NIX_OPTS >/dev/null 2>&1; then
declare -a NIX_OPTS=()
fi
# generate_host_ed25519_key <hostname> <keyfile>
# Writes <keyfile> and <keyfile>.pub. Caller is responsible for refusing to
# overwrite an existing keyfile -- this always runs ssh-keygen fresh.
generate_host_ed25519_key() {
local hostname="$1" keyfile="$2"
nix-shell "${NIX_OPTS[@]}" -p openssh --run \
"ssh-keygen -t ed25519 -N '' -C '${hostname}' -f '${keyfile}'" >/dev/null
}
# ssh_pubkey_to_age <pubkeyfile>
# Prints the age public key derived from an ed25519 SSH public key file.
ssh_pubkey_to_age() {
local pubkeyfile="$1"
nix-shell "${NIX_OPTS[@]}" -p ssh-to-age --run "ssh-to-age -i '${pubkeyfile}'"
}