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Nix/scripts/install-nix-from-closure.sh

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#!/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
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