From fd42176a21d62039580c6cf6430ee19d8d3b6e1c Mon Sep 17 00:00:00 2001 From: Daniel Fitzpatrick Date: Mon, 6 Jul 2020 21:59:18 -0500 Subject: [PATCH] Add a script to install nix on non-systemd systems. --- scripts/install-generic-multi-user.sh | 799 ++++++++++++++++++++++++++ scripts/install-nix-from-closure.sh | 14 +- 2 files changed, 809 insertions(+), 4 deletions(-) create mode 100644 scripts/install-generic-multi-user.sh diff --git a/scripts/install-generic-multi-user.sh b/scripts/install-generic-multi-user.sh new file mode 100644 index 000000000..4353e9a06 --- /dev/null +++ b/scripts/install-generic-multi-user.sh @@ -0,0 +1,799 @@ +#!/usr/bin/env bash + +set -eu +set -o pipefail + +# Sourced from: +# - https://github.com/LnL7/nix-darwin/blob/8c29d0985d74b4a990238497c47a2542a5616b3c/bootstrap.sh +# - https://gist.github.com/expipiplus1/e571ce88c608a1e83547c918591b149f/ac504c6c1b96e65505fbda437a28ce563408ecb0 +# - https://github.com/NixOS/nixos-org-configurations/blob/a122f418797713d519aadf02e677fce0dc1cb446/delft/scripts/nix-mac-installer.sh +# - https://github.com/matthewbauer/macNixOS/blob/f6045394f9153edea417be90c216788e754feaba/install-macNixOS.sh +# - https://gist.github.com/LnL7/9717bd6cdcb30b086fd7f2093e5f8494/86b26f852ce563e973acd30f796a9a416248c34a +# +# however tracking which bits came from which would be impossible. + +readonly ESC='\033[0m' +readonly BOLD='\033[1m' +readonly BLUE='\033[34m' +readonly BLUE_UL='\033[4;34m' +readonly GREEN='\033[32m' +readonly GREEN_UL='\033[4;32m' +readonly RED='\033[31m' + +# installer allows overriding build user count to speed up installation +# as creating each user takes non-trivial amount of time on macos +readonly NIX_USER_COUNT=${NIX_USER_COUNT:-32} +readonly NIX_BUILD_GROUP_ID="30000" +readonly NIX_BUILD_GROUP_NAME="nixbld" +readonly NIX_FIRST_BUILD_UID="30001" +# Please don't change this. We don't support it, because the +# default shell profile that comes with Nix doesn't support it. +readonly NIX_ROOT="/nix" +readonly NIX_EXTRA_CONF=${NIX_EXTRA_CONF:-} + +readonly PROFILE_TARGETS=("/etc/bashrc" "/etc/profile.d/nix.sh" "/etc/zshrc") +readonly PROFILE_BACKUP_SUFFIX=".backup-before-nix" +readonly PROFILE_NIX_FILE="$NIX_ROOT/var/nix/profiles/default/etc/profile.d/nix-daemon.sh" + +readonly NIX_INSTALLED_NIX="/nix/store/j8dbv5w6jl34caywh2ygdy88knx1mdf7-nix-2.3.6" +readonly NIX_INSTALLED_CACERT="/nix/store/7dxhzymvy330i28ii676fl1pqwcahv2f-nss-cacert-3.49.2" +readonly EXTRACTED_NIX_PATH="$(dirname "$0")" + +readonly ROOT_HOME=$(echo ~root) + +if [ -t 0 ]; then + readonly IS_HEADLESS='no' +else + readonly IS_HEADLESS='yes' +fi + +headless() { + if [ "$IS_HEADLESS" = "yes" ]; then + return 0 + else + return 1 + fi +} + +contactme() { + echo "We'd love to help if you need it." + echo "" + echo "If you can, open an issue at https://github.com/nixos/nix/issues" + echo "" + echo "Or feel free to contact the team," + echo " - on IRC #nixos on irc.freenode.net" + echo " - on twitter @nixos_org" +} + +uninstall_directions() { + subheader "Uninstalling nix:" + local step=0 + + step=$((step + 1)) + + for profile_target in "${PROFILE_TARGETS[@]}"; do + if [ -e "$profile_target" ] && [ -e "$profile_target$PROFILE_BACKUP_SUFFIX" ]; then + step=$((step + 1)) + cat < $1" +} + +bold() { + echo "$BOLD$*$ESC" +} + +ok() { + _textout "$GREEN" "$@" +} + +warning() { + warningheader "warning!" + cat + echo "" +} + +failure() { + header "oh no!" + _textout "$RED" "$@" + echo "" + _textout "$RED" "$(contactme)" + trap finish_cleanup EXIT + exit 1 +} + +ui_confirm() { + _textout "$GREEN$GREEN_UL" "$1" + + if headless; then + echo "No TTY, assuming you would say yes :)" + return 0 + fi + + local prompt="[y/n] " + echo -n "$prompt" + while read -r y; do + if [ "$y" = "y" ]; then + echo "" + return 0 + elif [ "$y" = "n" ]; then + echo "" + return 1 + else + _textout "$RED" "Sorry, I didn't understand. I can only understand answers of y or n" + echo -n "$prompt" + fi + done + echo "" + return 1 +} + +__sudo() { + local expl="$1" + local cmd="$2" + shift + header "sudo execution" + + echo "I am executing:" + echo "" + printf " $ sudo %s\\n" "$cmd" + echo "" + echo "$expl" + echo "" + + return 0 +} + +_sudo() { + local expl="$1" + shift + if ! headless; then + __sudo "$expl" "$*" + fi + sudo "$@" +} + + +readonly SCRATCH=$(mktemp -d -t tmp.XXXXXXXXXX) +function finish_cleanup { + rm -rf "$SCRATCH" +} + +function finish_fail { + finish_cleanup + + failure < /dev/null >&2; then + failure < "$SCRATCH/.nix-channels" + _sudo "to set up the default system channel (part 1)" \ + install -m 0664 "$SCRATCH/.nix-channels" "$ROOT_HOME/.nix-channels" + fi +} + +welcome_to_nix() { + ok "Welcome to the Multi-User Nix Installation" + + cat < "$SCRATCH/nix.conf" +$NIX_EXTRA_CONF +build-users-group = $NIX_BUILD_GROUP_NAME +EOF + _sudo "to place the default nix daemon configuration (part 2)" \ + install -m 0664 "$SCRATCH/nix.conf" /etc/nix/nix.conf +} + +main() { + if [ "$(uname -s)" = "Darwin" ]; then + # shellcheck source=./install-darwin-multi-user.sh + . "$EXTRACTED_NIX_PATH/install-darwin-multi-user.sh" + elif [ "$(uname -s)" = "Linux" ]; then + # shellcheck source=./install-systemd-multi-user.sh + . "$EXTRACTED_NIX_PATH/install-systemd-multi-user.sh" # A lot of this is still usable for a non-systemd multi-user install + else + failure "Sorry, I don't know what to do on $(uname)" + fi + + welcome_to_nix + chat_about_sudo + + if [ "${ALLOW_PREEXISTING_INSTALLATION:-}" = "" ]; then + validate_starting_assumptions + fi + + setup_report + + if ! ui_confirm "Ready to continue?"; then + ok "Alright, no changes have been made :)" + contactme + trap finish_cleanup EXIT + exit 1 + fi + + create_build_group + create_build_users + create_directories + place_channel_configuration + install_from_extracted_nix + + configure_shell_profile + + set +eu + . /etc/profile + set -eu + + setup_default_profile + place_nix_configuration + + trap finish_success EXIT +} + + +main diff --git a/scripts/install-nix-from-closure.sh b/scripts/install-nix-from-closure.sh index 5824c2217..906e7da9b 100644 --- a/scripts/install-nix-from-closure.sh +++ b/scripts/install-nix-from-closure.sh @@ -35,7 +35,7 @@ fi # Determine if we could use the multi-user installer or not if [ "$(uname -s)" = "Darwin" ]; then echo "Note: a multi-user installation is possible. See https://nixos.org/nix/manual/#sect-multi-user-installation" >&2 -elif [ "$(uname -s)" = "Linux" ] && [ -e /run/systemd/system ]; then +elif [ "$(uname -s)" = "Linux" ]; then echo "Note: a multi-user installation is possible. See https://nixos.org/nix/manual/#sect-multi-user-installation" >&2 fi @@ -122,9 +122,15 @@ if [ "$(uname -s)" = "Darwin" ]; then fi if [ "$INSTALL_MODE" = "daemon" ]; then - printf '\e[1;31mSwitching to the Daemon-based Installer\e[0m\n' - exec "$self/install-multi-user" - exit 0 + if [ -e /run/systemd/system ]; then + printf '\e[1;31mSwitching to the Systemd Daemon-based Installer\e[0m\n' + exec "$self/install-multi-user" + exit 0 + else + printf '\e[1;31mSwitching to the Non-Systemd Daemon-based Installer\e[0m\n' + exec "$self/install-generic-multi-user" + exit 0 + fi fi if [ "$(id -u)" -eq 0 ]; then