gnu-plus-dotfiles/run_once_00-install-bootstrap-tools.sh.tmpl

#!/usr/bin/env bash
# =============================================================================
#  run_once_00-install-bootstrap-tools.sh.tmpl
#  Install age, curl, ca-certificates, git — needed before anything else.
#  Idempotent: skips if already installed.
# =============================================================================
set -euo pipefail

log() { printf '\033[1;34m[bootstrap]\033[0m %s\n' "$*"; }
die() { printf '\033[1;31m[bootstrap ERROR]\033[0m %s\n' "$*" >&2; exit 1; }

# This script runs as the invoking user via `chezmoi apply`/`init`. It uses
# sudo for system package installs. If sudo isn't passwordless, the user
# will be prompted once per sudo invocation.

{{ if eq .os_family "arch" -}}
# Only sync the package DB if anything is missing. Avoids a no-op sudo
# (which would still prompt for a password even when there's nothing to
# install) on boxes where all the bootstrap tools are already present.
MISSING_PKGS=()
for p in age curl ca-certificates git base-devel wget; do
    if ! command -v "$p" >/dev/null 2>&1 && ! pacman -Qi "$p" >/dev/null 2>&1; then
        MISSING_PKGS+=("$p")
    fi
done

if (( ${#MISSING_PKGS[@]} > 0 )); then
    log "pacman-sync (missing: ${MISSING_PKGS[*]})"
    sudo pacman -Sy --noconfirm
    log "install base tools (arch)"
    sudo pacman -S --needed --noconfirm "${MISSING_PKGS[@]}"
else
    log "all base tools already installed; skipping pacman"
fi

{{ else if eq .os_family "debian" -}}
export DEBIAN_FRONTEND=noninteractive
# Only run apt if anything is missing, so a no-op sudo isn't required.
MISSING_PKGS=()
for p in age curl ca-certificates git wget gnupg libssl-dev pkg-config; do
    if ! command -v "$p" >/dev/null 2>&1; then
        MISSING_PKGS+=("$p")
    fi
done

if (( ${#MISSING_PKGS[@]} > 0 )); then
    log "apt-update (missing: ${MISSING_PKGS[*]})"
    sudo apt-get update -y
    log "apt-upgrade"
    sudo apt-get upgrade -y
    log "install base tools (debian)"
    sudo apt-get install -y --no-install-recommends "${MISSING_PKGS[@]}"
else
    log "all base tools already installed; skipping apt"
fi

{{ else if eq .os_family "gentoo" -}}
# Gentoo: bootstrap tools come from the main tree. `age` is in the
# main tree (app-crypt/age), curl/ca-certificates/git are @system.
# Skip the install only if everything is already present (no
# `emerge` no-op — emerge is slow and a fresh sync can take minutes).
#
# Use full category/package names for ambiguous short names:
# `gnupg` is ambiguous (app-crypt/gnupg vs app-vim/gnupg) and
# `base-devel` doesn't exist in main (use the @system set instead).
GENTOO_BOOTSTRAP_PKGS=(
    app-crypt/age
    app-crypt/gnupg
    net-misc/curl
    app-misc/ca-certificates
    dev-vcs/git
    net-misc/wget
)
MISSING_PKGS=()
for p in "${GENTOO_BOOTSTRAP_PKGS[@]}"; do
    # bin name is the package basename; for @system packages like
    # ca-certificates we accept that `command -v ca-certificates`
    # may not exist (those are pseudo-packages). Use equery as fallback.
    bin_name=$(basename "$p")
    if ! command -v "$bin_name" >/dev/null 2>&1; then
        MISSING_PKGS+=("$p")
    fi
done

if (( ${#MISSING_PKGS[@]} > 0 )); then
    log "emerge bootstrap tools (missing: ${MISSING_PKGS[*]})"
    # On Gentoo, `emerge --sync` is required first to populate the
    # portage tree. If the box hasn't synced in a while, do it now.
    # Skip the sync if /var/db/repos/gentoo is recent (< 1 day).
    sync_needed=1
    if [[ -d /var/db/repos/gentoo ]]; then
        # Check age of the metadata timestamp
        sync_needed=$(find /var/db/repos/gentoo -name 'metadata.timestamp' -mtime -1 2>/dev/null | head -1 | wc -l)
    fi
    if (( sync_needed == 0 )); then
        log "portage tree is fresh (< 1 day old); skipping emerge --sync"
    else
        log "emerge --sync (portage tree is stale or missing)"
        sudo emerge --sync
    fi
    log "emerge bootstrap tools"
    sudo emerge --ask=n --nospinner --quiet-build "${MISSING_PKGS[@]}"
else
    log "all base tools already installed; skipping emerge"
fi

{{ else -}}
die "unsupported os_family: {{ .os_family }} (this script supports arch, debian, or gentoo)"
{{ end -}}

log "bootstrap tools installed"
command -v age && age --version
command -v git && git --version