Qyriad
de212be82b
Tested in a Debian container. Fixes #1189 Fixes https://git.lix.systems/lix-project/lix-installer/issues/79 Change-Id: Id7de28bf81eb122dd60755622b7816716a6a6964
136 lines
4.2 KiB
Bash
Executable File
136 lines
4.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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function eprintln()
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{
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printf "%s\n" "$@" >&2
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}
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ANSI_YELLOW=$'\x1b[33m'
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ANSI_RESET=$'\x1b[0m'
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function printUsage()
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{
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echo "usage: upgrade-lix.sh <latest-tag>"
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echo
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echo "e.g.: ./upgrade-lix.sh 2.95"
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}
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function checkSystemdService()
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{
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# Check if we have systemd.
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local SYSTEMCTL
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if command -v systemctl >/dev/null 2>&1; then
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SYSTEMCTL="$(command -v systemctl)"
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else
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# Try /usr/bin, in case PATH is on vacation.
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if [[ -x /usr/bin/systemctl ]]; then
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SYSTEMCTL="/usr/bin/systemctl"
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else
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# If there's really no systemctl, then this is probably not a systemd system.
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# On non-systemd systems, there's no issue.
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# Exit with success.
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return 0
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fi
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fi
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if "$SYSTEMCTL" cat nix-daemon@.service --no-pager >/dev/null 2>&1; then
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# The instanced daemon service unit exists, so we're good.
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return 0
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fi
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# Juuuust in case something unusual went wrong with the systemctl call,
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# we'll do one more check. This could maybe happen if someone put the file
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# in place but hasn't `daemon-reload`ed yet. Maybe.
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if [[ -e /etc/systemd/system/nix-daemon@.service ]]; then
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return 0
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fi
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# If we got here then we DO have systemd but we do NOT have nix-daemon@.service.
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# AKA: the bad case.
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eprintln "${ANSI_YELLOW}WARNING${ANSI_RESET}: manual intervention will be required to complete this Lix install!"
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eprintln "The Lix daemon is now an instanced unit that is fully socket-activated."
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eprintln
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eprintln "This requires a new systemd unit: nix-daemon@.service"
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eprintln
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eprintln "'nix upgrade-nix' will provide a profile with a new Lix, likely one of:"
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eprintln " /nix/var/nix/profiles/default"
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eprintln " /nix/var/nix/profiles/per-user/root/profile"
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eprintln "It will have the instanced systemd unit file at 'lib/systemd/system/nix-daemon@.service'"
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eprintln
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eprintln "You should symlink or copy this file to '/etc/systemd/system/nix-daemon@.service',"
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eprintln "and then run 'systemctl daemon-reload && systemctl restart nix-daemon.socket'."
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eprintln "Until you do that, all nix commands will require root and '--store local'."
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eprintln
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local RESPONSE
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# Single-character read with a prompt, for a traditional y/n prompt.
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read -er -N 1 -p "Procede with installation? [y/N] " RESPONSE
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# Lowercase the respose before comparing: Y and y are both "yes".
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# Anything else is "no".
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if [[ "${RESPONSE@L}" = "y" ]]; then
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return 0
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fi
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eprintln "Installation cancelled!"
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exit 1
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}
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# We take only one argument.
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# If that argument looks "help"-y, then we should print usage instead.
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if [[ "$#" -eq 1 ]]; then
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case "$1" in
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-h|-H|-?|*help*)
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printUsage
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exit 0
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;;
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esac
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else
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printUsage
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exit 0
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fi
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LIX_VERSION="$1"
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# Let people override these if they reeeeeeally need to...
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LIX_REF="${LIX_REF:-refs/tags/$LIX_VERSION}"
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LIX_BASE="${LIX_BASE:-"git+https://git.lix.systems/lix-project/lix"}"
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if [[ "$EUID" != 0 ]]; then
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eprintln "Please run this script as root."
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eprintln "If you use sudo, make sure your PATH environment variable is kept with '--preserve-env=PATH'."
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exit 2
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fi
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if ! command -v nix >/dev/null 2>&1; then
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eprintln "Couldn't find a 'nix' in your PATH: '$PATH'"
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eprintln "If you're running with sudo, make sure PATH is preserved with '--preserve-env=PATH'."
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eprintln "If you're passing '--preserve-env=PATH', check /etc/sudoers for 'env_reset' and 'env_keep'."
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eprintln "If you cannot modify that, run this script from a root shell, instead of directly from sudo."
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exit 3
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fi
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NIX="${NIX:-$(command -v nix)}"
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declare -a SUBSTITUTER_ARGS=(
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"--extra-substituters"
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"https://cache.lix.systems"
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"--extra-trusted-public-keys"
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"cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o="
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)
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checkSystemdService
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set -x
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exec "$NIX" run \
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--store local \
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--extra-experimental-features "nix-command flakes" \
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"${SUBSTITUTER_ARGS[@]}" \
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"${LIX_BASE}?ref=${LIX_REF}" \
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-- \
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--store local \
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--extra-experimental-features "nix-command flakes" \
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upgrade-nix \
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"${SUBSTITUTER_ARGS[@]}"
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