8ebdbeb257
Before this patch, installing Nix using the Fish shell did not work because Fish wasn't configured to add Nix to the PATH. Some options in #1512 offered workarounds, but they typically involve extra plugins or packages. This patch adds native, out-of-the-box support for the Fish shell. Note that Fish supports a `conf.d` directory, which is intended for exactly use cases like this: software projects distributing shell snippets. This patch takes advantage of it. The installer doesn't append any Nix loader behavior to any Fish config file. Because of that, the uninstall process is smooth and a reinstall obliterates the existing nix.fish files that we place instead of bothering the user with a backup / manual removal. Both single-user and multi-user cases are covered. It has been tested on Ubuntu, and a Mac with MacPorts, homebrew, and the Fish installer pkg. Closes #1512 Co-authored-by: Graham Christensen <graham@grahamc.com>
279 lines
8.8 KiB
Bash
279 lines
8.8 KiB
Bash
#!/bin/sh
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set -e
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umask 0022
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dest="/nix"
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self="$(dirname "$0")"
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nix="@nix@"
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cacert="@cacert@"
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if ! [ -e "$self/.reginfo" ]; then
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echo "$0: incomplete installer (.reginfo is missing)" >&2
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fi
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if [ -z "$USER" ] && ! USER=$(id -u -n); then
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echo "$0: \$USER is not set" >&2
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exit 1
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fi
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if [ -z "$HOME" ]; then
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echo "$0: \$HOME is not set" >&2
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exit 1
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fi
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# macOS support for 10.12.6 or higher
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if [ "$(uname -s)" = "Darwin" ]; then
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IFS='.' read -r macos_major macos_minor macos_patch << EOF
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$(sw_vers -productVersion)
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EOF
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if [ "$macos_major" -lt 10 ] || { [ "$macos_major" -eq 10 ] && [ "$macos_minor" -lt 12 ]; } || { [ "$macos_minor" -eq 12 ] && [ "$macos_patch" -lt 6 ]; }; then
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# patch may not be present; command substitution for simplicity
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echo "$0: macOS $(sw_vers -productVersion) is not supported, upgrade to 10.12.6 or higher"
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exit 1
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fi
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fi
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# Determine if we could use the multi-user installer or not
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if [ "$(uname -s)" = "Linux" ]; then
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echo "Note: a multi-user installation is possible. See https://nixos.org/manual/nix/stable/installation/installing-binary.html#multi-user-installation" >&2
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fi
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case "$(uname -s)" in
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"Darwin")
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INSTALL_MODE=daemon;;
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*)
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INSTALL_MODE=no-daemon;;
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esac
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# space-separated string
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ACTIONS=
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# handle the command line flags
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while [ $# -gt 0 ]; do
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case $1 in
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--daemon)
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INSTALL_MODE=daemon
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ACTIONS="${ACTIONS}install "
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;;
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--no-daemon)
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if [ "$(uname -s)" = "Darwin" ]; then
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printf '\e[1;31mError: --no-daemon installs are no-longer supported on Darwin/macOS!\e[0m\n' >&2
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exit 1
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fi
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INSTALL_MODE=no-daemon
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# intentional tail space
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ACTIONS="${ACTIONS}install "
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;;
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# --uninstall)
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# # intentional tail space
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# ACTIONS="${ACTIONS}uninstall "
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# ;;
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--no-channel-add)
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export NIX_INSTALLER_NO_CHANNEL_ADD=1;;
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--daemon-user-count)
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export NIX_USER_COUNT=$2
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shift;;
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--no-modify-profile)
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NIX_INSTALLER_NO_MODIFY_PROFILE=1;;
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--darwin-use-unencrypted-nix-store-volume)
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{
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echo "Warning: the flag --darwin-use-unencrypted-nix-store-volume"
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echo " is no longer needed and will be removed in the future."
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echo ""
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} >&2;;
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--nix-extra-conf-file)
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# shellcheck disable=SC2155
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export NIX_EXTRA_CONF="$(cat "$2")"
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shift;;
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*)
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{
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echo "Nix Installer [--daemon|--no-daemon] [--daemon-user-count INT] [--no-channel-add] [--no-modify-profile] [--nix-extra-conf-file FILE]"
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echo "Choose installation method."
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echo ""
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echo " --daemon: Installs and configures a background daemon that manages the store,"
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echo " providing multi-user support and better isolation for local builds."
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echo " Both for security and reproducibility, this method is recommended if"
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echo " supported on your platform."
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echo " See https://nixos.org/manual/nix/stable/installation/installing-binary.html#multi-user-installation"
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echo ""
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echo " --no-daemon: Simple, single-user installation that does not require root and is"
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echo " trivial to uninstall."
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echo " (default)"
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echo ""
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echo " --no-channel-add: Don't add any channels. nixpkgs-unstable is installed by default."
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echo ""
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echo " --no-modify-profile: Don't modify the user profile to automatically load nix."
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echo ""
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echo " --daemon-user-count: Number of build users to create. Defaults to 32."
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echo ""
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echo " --nix-extra-conf-file: Path to nix.conf to prepend when installing /etc/nix/nix.conf"
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echo ""
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if [ -n "${INVOKED_FROM_INSTALL_IN:-}" ]; then
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echo " --tarball-url-prefix URL: Base URL to download the Nix tarball from."
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fi
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} >&2
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exit;;
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esac
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shift
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done
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if [ "$INSTALL_MODE" = "daemon" ]; then
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printf '\e[1;31mSwitching to the Multi-user Installer\e[0m\n'
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exec "$self/install-multi-user" $ACTIONS # let ACTIONS split
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exit 0
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fi
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if [ "$(id -u)" -eq 0 ]; then
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printf '\e[1;31mwarning: installing Nix as root is not supported by this script!\e[0m\n'
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fi
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echo "performing a single-user installation of Nix..." >&2
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if ! [ -e "$dest" ]; then
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cmd="mkdir -m 0755 $dest && chown $USER $dest"
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echo "directory $dest does not exist; creating it by running '$cmd' using sudo" >&2
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if ! sudo sh -c "$cmd"; then
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echo "$0: please manually run '$cmd' as root to create $dest" >&2
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exit 1
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fi
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fi
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if ! [ -w "$dest" ]; then
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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 $dest' as root." >&2
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exit 1
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fi
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# The auto-chroot code in openFromNonUri() checks for the
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# non-existence of /nix/var/nix, so we need to create it here.
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mkdir -p "$dest/store" "$dest/var/nix"
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printf "copying Nix to %s..." "${dest}/store" >&2
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# Insert a newline if no progress is shown.
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if [ ! -t 0 ]; then
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echo ""
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fi
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for i in $(cd "$self/store" >/dev/null && echo ./*); do
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if [ -t 0 ]; then
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printf "." >&2
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fi
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i_tmp="$dest/store/$i.$$"
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if [ -e "$i_tmp" ]; then
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rm -rf "$i_tmp"
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fi
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if ! [ -e "$dest/store/$i" ]; then
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cp -RPp "$self/store/$i" "$i_tmp"
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chmod -R a-w "$i_tmp"
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chmod +w "$i_tmp"
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mv "$i_tmp" "$dest/store/$i"
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chmod -w "$dest/store/$i"
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fi
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done
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echo "" >&2
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if ! "$nix/bin/nix-store" --load-db < "$self/.reginfo"; then
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echo "$0: unable to register valid paths" >&2
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exit 1
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fi
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# shellcheck source=./nix-profile.sh.in
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. "$nix/etc/profile.d/nix.sh"
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if ! "$nix/bin/nix-env" -i "$nix"; then
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echo "$0: unable to install Nix into your default profile" >&2
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exit 1
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fi
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# Install an SSL certificate bundle.
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if [ -z "$NIX_SSL_CERT_FILE" ] || ! [ -f "$NIX_SSL_CERT_FILE" ]; then
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"$nix/bin/nix-env" -i "$cacert"
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export NIX_SSL_CERT_FILE="$HOME/.nix-profile/etc/ssl/certs/ca-bundle.crt"
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fi
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# Subscribe the user to the Nixpkgs channel and fetch it.
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if [ -z "$NIX_INSTALLER_NO_CHANNEL_ADD" ]; then
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if ! "$nix/bin/nix-channel" --list | grep -q "^nixpkgs "; then
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"$nix/bin/nix-channel" --add https://nixos.org/channels/nixpkgs-unstable
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fi
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if [ -z "$_NIX_INSTALLER_TEST" ]; then
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if ! "$nix/bin/nix-channel" --update nixpkgs; then
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echo "Fetching the nixpkgs channel failed. (Are you offline?)"
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echo "To try again later, run \"nix-channel --update nixpkgs\"."
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fi
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fi
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fi
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added=
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p=
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p_sh=$HOME/.nix-profile/etc/profile.d/nix.sh
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p_fish=$HOME/.nix-profile/etc/profile.d/nix.fish
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if [ -z "$NIX_INSTALLER_NO_MODIFY_PROFILE" ]; then
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# Make the shell source nix.sh during login.
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for i in .bash_profile .bash_login .profile; do
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fn="$HOME/$i"
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if [ -w "$fn" ]; then
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if ! grep -q "$p_sh" "$fn"; then
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echo "modifying $fn..." >&2
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printf '\nif [ -e %s ]; then . %s; fi # added by Nix installer\n' "$p_sh" "$p_sh" >> "$fn"
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fi
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added=1
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p=${p_sh}
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break
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fi
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done
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for i in .zshenv .zshrc; do
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fn="$HOME/$i"
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if [ -w "$fn" ]; then
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if ! grep -q "$p_sh" "$fn"; then
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echo "modifying $fn..." >&2
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printf '\nif [ -e %s ]; then . %s; fi # added by Nix installer\n' "$p_sh" "$p_sh" >> "$fn"
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fi
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added=1
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p=${p_sh}
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break
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fi
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done
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if [ -d "$HOME/.config/fish" ]; then
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fishdir=$HOME/.config/fish/conf.d
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if [ ! -d "$fishdir" ]; then
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mkdir -p "$fishdir"
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fi
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fn="$fishdir/nix.fish"
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echo "placing $fn..." >&2
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printf '\nif test -e %s; . %s; end # added by Nix installer\n' "$p_fish" "$p_fish" > "$fn"
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added=1
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p=${p_fish}
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fi
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else
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p=${p_sh}
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fi
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if [ -z "$added" ]; then
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cat >&2 <<EOF
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Installation finished! To ensure that the necessary environment
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variables are set, please add the line
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. $p
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to your shell profile (e.g. ~/.profile).
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EOF
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else
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cat >&2 <<EOF
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Installation finished! To ensure that the necessary environment
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variables are set, either log in again, or type
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. $p
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in your shell.
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EOF
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fi
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