#!/bin/sh set -e umask 0022 dest="/nix" self="$(dirname "$0")" nix="@nix@" cacert="@cacert@" if ! [ -e "$self/.reginfo" ]; then echo "$0: incomplete installer (.reginfo is missing)" >&2 fi if [ -z "$USER" ] && ! USER=$(id -u -n); then echo "$0: \$USER is not set" >&2 exit 1 fi if [ -z "$HOME" ]; then echo "$0: \$HOME is not set" >&2 exit 1 fi # macOS support for 10.12.6 or higher if [ "$(uname -s)" = "Darwin" ]; then IFS='.' read -r macos_major macos_minor macos_patch << EOF $(sw_vers -productVersion) EOF if [ "$macos_major" -lt 10 ] || { [ "$macos_major" -eq 10 ] && [ "$macos_minor" -lt 12 ]; } || { [ "$macos_minor" -eq 12 ] && [ "$macos_patch" -lt 6 ]; }; then # patch may not be present; command substitution for simplicity echo "$0: macOS $(sw_vers -productVersion) is not supported, upgrade to 10.12.6 or higher" exit 1 fi fi # Determine if we could use the multi-user installer or not if [ "$(uname -s)" = "Linux" ]; then echo "Note: a multi-user installation is possible. See https://nixos.org/manual/nix/stable/installation/installing-binary.html#multi-user-installation" >&2 fi case "$(uname -s)" in "Darwin") INSTALL_MODE=daemon;; *) INSTALL_MODE=no-daemon;; esac # space-separated string ACTIONS= # handle the command line flags while [ $# -gt 0 ]; do case $1 in --daemon) INSTALL_MODE=daemon ACTIONS="${ACTIONS}install " ;; --no-daemon) if [ "$(uname -s)" = "Darwin" ]; then printf '\e[1;31mError: --no-daemon installs are no-longer supported on Darwin/macOS!\e[0m\n' >&2 exit 1 fi INSTALL_MODE=no-daemon # intentional tail space ACTIONS="${ACTIONS}install " ;; # --uninstall) # # intentional tail space # ACTIONS="${ACTIONS}uninstall " # ;; --yes) export NIX_INSTALLER_YES=1;; --no-channel-add) export NIX_INSTALLER_NO_CHANNEL_ADD=1;; --daemon-user-count) export NIX_USER_COUNT=$2 shift;; --no-modify-profile) NIX_INSTALLER_NO_MODIFY_PROFILE=1;; --darwin-use-unencrypted-nix-store-volume) { echo "Warning: the flag --darwin-use-unencrypted-nix-store-volume" echo " is no longer needed and will be removed in the future." echo "" } >&2;; --nix-extra-conf-file) # shellcheck disable=SC2155 export NIX_EXTRA_CONF="$(cat "$2")" shift;; *) { echo "Nix Installer [--daemon|--no-daemon] [--daemon-user-count INT] [--yes] [--no-channel-add] [--no-modify-profile] [--nix-extra-conf-file FILE]" echo "Choose installation method." echo "" echo " --daemon: Installs and configures a background daemon that manages the store," echo " providing multi-user support and better isolation for local builds." echo " Both for security and reproducibility, this method is recommended if" echo " supported on your platform." echo " See https://nixos.org/manual/nix/stable/installation/installing-binary.html#multi-user-installation" echo "" echo " --no-daemon: Simple, single-user installation that does not require root and is" echo " trivial to uninstall." echo " (default)" echo "" echo " --yes: Run the script non-interactively, accepting all prompts." echo "" echo " --no-channel-add: Don't add any channels. nixpkgs-unstable is installed by default." echo "" echo " --no-modify-profile: Don't modify the user profile to automatically load nix." echo "" echo " --daemon-user-count: Number of build users to create. Defaults to 32." echo "" echo " --nix-extra-conf-file: Path to nix.conf to prepend when installing /etc/nix/nix.conf" echo "" if [ -n "${INVOKED_FROM_INSTALL_IN:-}" ]; then echo " --tarball-url-prefix URL: Base URL to download the Nix tarball from." fi } >&2 exit;; esac shift done if [ "$INSTALL_MODE" = "daemon" ]; then printf '\e[1;31mSwitching to the Multi-user Installer\e[0m\n' exec "$self/install-multi-user" $ACTIONS # let ACTIONS split exit 0 fi if [ "$(id -u)" -eq 0 ]; then printf '\e[1;31mwarning: installing Nix as root is not supported by this script!\e[0m\n' fi echo "performing a single-user installation of Nix..." >&2 if ! [ -e "$dest" ]; then cmd="mkdir -m 0755 $dest && chown $USER $dest" echo "directory $dest does not exist; creating it by running '$cmd' using sudo" >&2 if ! sudo sh -c "$cmd"; then echo "$0: please manually run '$cmd' as root to create $dest" >&2 exit 1 fi fi if ! [ -w "$dest" ]; then echo "$0: directory $dest exists, but is not writable by you. This could indicate that another user has already performed a single-user installation of Nix on this system. If you wish to enable multi-user support see https://nixos.org/manual/nix/stable/installation/multi-user.html. If you wish to continue with a single-user install for $USER please run 'chown -R $USER $dest' as root." >&2 exit 1 fi # The auto-chroot code in openFromNonUri() checks for the # non-existence of /nix/var/nix, so we need to create it here. mkdir -p "$dest/store" "$dest/var/nix" printf "copying Nix to %s..." "${dest}/store" >&2 # Insert a newline if no progress is shown. if [ ! -t 0 ]; then echo "" fi for i in $(cd "$self/store" >/dev/null && echo ./*); do if [ -t 0 ]; then printf "." >&2 fi i_tmp="$dest/store/$i.$$" if [ -e "$i_tmp" ]; then rm -rf "$i_tmp" fi if ! [ -e "$dest/store/$i" ]; then cp -RPp "$self/store/$i" "$i_tmp" chmod -R a-w "$i_tmp" chmod +w "$i_tmp" mv "$i_tmp" "$dest/store/$i" chmod -w "$dest/store/$i" fi done echo "" >&2 if ! "$nix/bin/nix-store" --load-db < "$self/.reginfo"; then echo "$0: unable to register valid paths" >&2 exit 1 fi # shellcheck source=./nix-profile.sh.in . "$nix/etc/profile.d/nix.sh" NIX_LINK="$HOME/.nix-profile" if ! "$nix/bin/nix-env" -i "$nix"; then echo "$0: unable to install Nix into your default profile" >&2 exit 1 fi # Install an SSL certificate bundle. if [ -z "$NIX_SSL_CERT_FILE" ] || ! [ -f "$NIX_SSL_CERT_FILE" ]; then "$nix/bin/nix-env" -i "$cacert" export NIX_SSL_CERT_FILE="$NIX_LINK/etc/ssl/certs/ca-bundle.crt" fi # Subscribe the user to the Nixpkgs channel and fetch it. if [ -z "$NIX_INSTALLER_NO_CHANNEL_ADD" ]; then if ! "$nix/bin/nix-channel" --list | grep -q "^nixpkgs "; then "$nix/bin/nix-channel" --add https://nixos.org/channels/nixpkgs-unstable fi if [ -z "$_NIX_INSTALLER_TEST" ]; then if ! "$nix/bin/nix-channel" --update nixpkgs; then echo "Fetching the nixpkgs channel failed. (Are you offline?)" echo "To try again later, run \"nix-channel --update nixpkgs\"." fi fi fi added= p= p_sh=$NIX_LINK/etc/profile.d/nix.sh p_fish=$NIX_LINK/etc/profile.d/nix.fish if [ -z "$NIX_INSTALLER_NO_MODIFY_PROFILE" ]; then # Make the shell source nix.sh during login. for i in .bash_profile .bash_login .profile; do fn="$HOME/$i" if [ -w "$fn" ]; then if ! grep -q "$p_sh" "$fn"; then echo "modifying $fn..." >&2 printf '\nif [ -e %s ]; then . %s; fi # added by Nix installer\n' "$p_sh" "$p_sh" >> "$fn" fi added=1 p=${p_sh} break fi done for i in .zshenv .zshrc; do fn="$HOME/$i" if [ -w "$fn" ]; then if ! grep -q "$p_sh" "$fn"; then echo "modifying $fn..." >&2 printf '\nif [ -e %s ]; then . %s; fi # added by Nix installer\n' "$p_sh" "$p_sh" >> "$fn" fi added=1 p=${p_sh} break fi done if [ -d "$HOME/.config/fish" ]; then fishdir=$HOME/.config/fish/conf.d if [ ! -d "$fishdir" ]; then mkdir -p "$fishdir" fi fn="$fishdir/nix.fish" echo "placing $fn..." >&2 printf '\nif test -e %s; . %s; end # added by Nix installer\n' "$p_fish" "$p_fish" > "$fn" added=1 p=${p_fish} fi else p=${p_sh} fi if [ -z "$added" ]; then cat >&2 <<EOF Installation finished! To ensure that the necessary environment variables are set, please add the line . $p to your shell profile (e.g. ~/.profile). EOF else cat >&2 <<EOF Installation finished! To ensure that the necessary environment variables are set, either log in again, or type . $p in your shell. EOF fi