simplify installer, drop eval, fix network check
This commit is contained in:
Astral
@@ -1,11 +1,12 @@
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# Keru OS <sub>ける</sub>
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An independent, source-only Linux distribution built around one idea: you
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don't install a system, you *craft* one — **ける・けいとうてき** (keru keitō-teki): a system assembled the way you want it.
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don't install a system, you *craft* one — **ける・けいとうてき** (keru keitō-teki): a
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system assembled the way you want it.
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This repository holds the **operating system itself** — the installer, the
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profile system, and the build pipeline. The two things Keru depends on live in
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their own repositories:
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This repository is the **operating system itself** — the installer, the
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profile system, and the build pipeline. The two things Keru leans on live in
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their own homes:
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- **[kama](https://github.com/AstralZX/kama)** — the package manager (a shell script)
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- **[kama-packages](https://github.com/AstralZX/kama-packages)** — the recipe repository
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@@ -15,7 +16,7 @@ their own repositories:
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Every package on Keru is built from source by **Kama**, a deliberately small
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package manager that simply runs the commands in each recipe. No binary
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packages, no opaque package machinery. The whole system — toolchain included —
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is compiled from original source.
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is compiled from original source. What you run, you built.
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Nothing is fixed. Nothing you didn't ask for is forced on you.
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@@ -37,6 +38,11 @@ Every init, every libc, every filesystem, everything. The selections are made
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during install and fixed at first boot. The system that lands on your disk is
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precisely the one you chose.
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Keru is stable on the combinations it offers you. If you push past what's
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proven — an untested libc/init pair, an unmaintained filesystem — the
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installer **warns** you the combination is unstable, then gets out of your way.
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You're never blocked, only told the truth.
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## How installation works
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The ISO carries **only the installer** — nothing else. There is no prebuilt
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@@ -65,6 +65,32 @@ you fetch exactly the parts you picked.
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> fit-to-request. If you want fast and prebaked, a binary distro is right
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> there. If you want your machine, this is the one."
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## Stability: guaranteed on what's offered, never enforced on you
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Keru's promise is that **the system won't break** — but honestly scoped: it
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won't break **on the combinations it offers you**. That is what the installer
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means by offering a choice: each option in `install.sh` is one Keru has proven
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builds and boots. The offered set is curated *so that* it doesn't break.
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Choice multiplies the test surface — six inits, four libcs, seven filesystems,
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five kernels, and so on produce over a thousand possible systems. Guaranteeing
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every one of them is only honest if it's *enforced by curation*: Keru offers
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what works.
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But the user is never locked out of going further. If you pick something that
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isn't yet proven — a libc and init never tested together, an unmaintained
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filesystem, an exotic kernel pair — Keru does **not** stop you. It **warns
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you** the combination is unstable and lets you proceed.
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> "Stability is a guarantee about what we offer, not a jail around the edge of
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> it. If you want to push into the unproven, we tell you the truth and get out
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> of your way."
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So the full definition, in one line:
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> **The system won't break for any choice Keru offers you; for anything beyond
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> that, Keru warns and steps aside — you stay in control, never blocked.**
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## Agreement on choice, not agreement on opinion
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The through-line across Keru's lineage is clear: TOML packages, then a
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+61
-65
@@ -1,88 +1,66 @@
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#!/usr/bin/env sh
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# keru-install — the Keru OS TUI installer
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#
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# Walks you through crafting your exact system, then writes make.conf and
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# kicks off the build. Everything is swappable here, at install time, and
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# locked in when you boot.
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#
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# Designed to run from the Keru live ISO. Backed by dialog/whiptail if
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# present; falls back to plain prompted input. All shell, no magic.
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# keru-install — Keru OS installer. Runs from the live ISO, walks you
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# through your choices, writes make.conf, then builds your system.
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set -eu
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. "$(dirname "$0")/../scripts/common.sh"
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# ---- defaults (mirror profile/make.conf) --------------------------------
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OUT="${MAKE_CONF_OUT:-/tmp/keru/make.conf}"
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DROP="/tmp/keru"
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mkdir -p "$DROP"
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mkdir -p /tmp/keru
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# ---- menu helpers -------------------------------------------------------
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pick() { # prompt, array-of-labels, defaults -> writes choice to $CHOICE
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local prompt="$1"; shift
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local default="$1"; shift
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# show a menu of options, remember the pick in $CHOICE
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pick() {
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prompt="$1"; shift
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default="$1"; shift
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CHOICE="$default"
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if command -v dialog >/dev/null 2>&1; then
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local args=()
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local i=0
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for opt in "$@"; do
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args+=("$i" "$opt")
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i=$((i+1))
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done
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local sel
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sel=$(dialog --stdout --no-cancel --menu "$prompt" 15 60 8 \
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--default-item "$default" "${args[@]}") || true
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CHOICE=$(eval "printf '%s' \"\${$((sel+1)):-\$default}\"" 2>/dev/null || printf '%s' "$default")
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else
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printf '%s\n' "== $prompt =="
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local n=1
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n=0
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for opt in "$@"; do
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printf ' %s) %s\n' "$n" "$opt"
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n=$((n+1))
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printf ' %s) %s\n' "$n" "$opt"
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done
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printf 'Select [%s]: ' "$default"
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read -r sel
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[ -n "$sel" ] && CHOICE=$(eval "printf '%s' \"\${$sel}\"") || CHOICE="$default"
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case "$sel" in
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''|*[!0-9]*) CHOICE="$default" ;;
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*)
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if [ "$sel" -ge 1 ] && [ "$sel" -le "$n" ]; then
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i=0
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for opt in "$@"; do
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i=$((i+1))
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[ "$i" -eq "$sel" ] && { CHOICE="$opt"; break; }
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done
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else
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CHOICE="$default"
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fi
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;;
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esac
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}
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# ---- network check -------------------------------------------------------
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# The ISO carries only the installer. Everything else (kernels, init systems,
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# libcs, filesystems, tools) is fetched and built at install time, so a working
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# network connection is a hard prerequisite.
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require_network() {
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local ok=0
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# try a few reachability probes
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for host in mirror.keru.org github.com 1.1.1.1; do
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if command -v ping >/dev/null 2>&1 && ping -c1 -W2 "$host" >/dev/null 2>&1; then ok=1; break; fi
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# fallback: plain connect test via /dev/tcp
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case "$host" in
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*.*.*.*) : ;; # ip already covered by ping
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esac
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ok=0
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for host in 1.1.1.1 github.com mirror.keru.org; do
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if command -v ping >/dev/null 2>&1 && ping -c1 -W2 "$host" >/dev/null 2>&1; then
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ok=1; break
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fi
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done
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if [ "$ok" = "0" ]; then
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if command -v nc >/dev/null 2>&1; then
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nc -z -w5 mirror.keru.org 443 >/dev/null 2>&1 && ok=1
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if command -v nc >/dev/null 2>&1 && nc -z -w5 github.com 443 >/dev/null 2>&1; then
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ok=1
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elif [ -e /dev/tcp ] && (exec 3<>/dev/tcp/github.com/443) >/dev/null 2>&1; then
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ok=1
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fi
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fi
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[ "$ok" = "1" ]
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}
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# ---- network configuration ------------------------------------------------
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configure_network() {
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msg "network configuration"
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if command -v nmtui >/dev/null 2>&1; then
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nmtui 2>/dev/null && return 0
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nmtui >/dev/null 2>&1
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else
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warn "nmtui not available — bring up the network yourself, then continue"
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fi
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if command -v dialog >/dev/null 2>&1 && command -v wifi-menu >/dev/null 2>&1; then
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dialog --stdout --menu "Network" 12 40 3 \
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1 "Wireless (wifi-menu)" 2 "Ethernet (skip)" 3 "Manual (ip)" 2>/dev/null
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fi
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read -r -p "Bring up Ethernet (DHCP) now? [Y/n] " eth
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case "$eth" in
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n|N|no) : ;;
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*) command -v dhcpcd >/dev/null 2>&1 && (dhcpcd >/dev/null 2>&1 &) || true ;;
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esac
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}
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banner "Keru OS — network required"
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@@ -90,20 +68,16 @@ info "the ISO only carries the installer."
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info "the system you choose (init, libc, fs, kernel, tools) is fetched and"
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info "built from the network during installation. a connection is required."
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if require_network; then
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msg "network: connected"
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else
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warn "network: not detected"
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read -r -p "Configure the network now? [Y/n] " cfg
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while ! require_network; do
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warn "network: not connected"
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read -r -p "Connect to the network now (runs nmtui)? [Y/n] " cfg
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case "$cfg" in
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n|N|no) die "a network connection is required to install Keru" ;;
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*) configure_network ;;
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esac
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require_network || die "still no network connection — cannot install"
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done
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msg "network: connected"
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fi
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# ---- swappable selections ------------------------------------------------
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banner "Keru OS — craft your system"
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pick "Init system" runit runit s6 openrc systemd busybox-init sysvinit dinit shepherd
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@@ -124,7 +98,29 @@ SUDO="$CHOICE"
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pick "Network tools" nmtui nmtui networkmanager connman systemd-networkd
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NET="$CHOICE"
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# ---- assemble make.conf ------------------------------------------------
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warn_unstable() {
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unstable=0
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case "$LIBC:$INIT" in
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uclibc-ng:*|musl:systemd)
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warn "$LIBC + $INIT: not yet proven to build and boot together"
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unstable=1 ;;
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esac
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case "$LIBC:$KERNEL" in
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musl:linux-zen|uclibc-ng:*)
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warn "$LIBC + $KERNEL: not yet proven to build and boot together"
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unstable=1 ;;
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esac
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case "$TARGET_FS" in
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zfs) warn "zfs + $LIBC: needs kernel module + ZFS userspace, not yet proven"
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unstable=1 ;;
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reiserfs) warn "reiserfs is unmaintained and has no stable future"
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unstable=1 ;;
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esac
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[ "$unstable" = "1" ] && warn "this combination is unstable. Keru won't stop you — build at your own risk."
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}
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warn_unstable
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msg "writing $OUT"
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cat > "$OUT" <<EOF
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# Generated by keru-install — hand-tune then rebuild if you like.
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