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|
#! /usr/bin/env bash
set -o pipefail
{ # Prevent execution if this script was only partially downloaded
# Argument parsing
init(){
if [ $# -gt 0 ]; then
case "$1" in
-h|--help)
usage
exit 1
;;
-u|--create-daemon-users)
export CREATE_DAEMON_USERS=true
;;
*)
echo -e "ERROR: Unrecognized parameter: '${1}'\nSee usage (--help) for options..." 1>&2
exit 1
;;
esac
fi
}
# Usage
usage(){
cat <<EOF
Usage: bootstrap.sh [Options]
Options:
-h, --help: Show this message
-u, --create-daemon-users: Create users & group for use with the Nix daemon
EOF
}
# Sanity checks
sanity(){
# Ensure the script is running on macOS
if [ $(uname -s) != "Darwin" ]; then
echo "This script is for use with macOS!"
exit 1
fi
# Ensure script is not being run with root privileges
if [ $EUID -eq 0 ]; then
echo "Please don't run this script with root privileges!"
exit 1
fi
# Ensure Nix has already been installed
if [[ ! $(type nix-env 2>/dev/null) ]]; then
echo -e "Cannot find "$YELLOW"nix-env"$ESC" in the PATH"
echo "Please ensure you've installed and configured your Nix environment correctly"
echo -e "Install instructions can be found at: "$BLUE_UL"https://nixos.org/nix/manual/#chap-quick-start"$ESC""
exit 1
fi
# Check if nix-darwin is already present
if [[ $(type darwin-rebuild 2>/dev/null) ]]; then
echo -e "It looks like "$YELLOW"nix-darwin"$ESC" is already installed..."
[ ! -z $CREATE_DAEMON_USERS ] && create_daemon_users || exit 1
fi
}
# Exit with message
exit_message(){
echo -e ""$RED"$1"$ESC"" >&2
exit 1
}
# Prompt for sudo password & keep alive
sudo_prompt(){
echo "Please enter your password for sudo authentication"
sudo -k
sudo echo "sudo authenticaion successful!"
while true ; do sudo -n true ; sleep 60 ; kill -0 "$$" || exit ; done 2>/dev/null &
}
# Daemon setup
create_daemon_users(){
echo -e ""$BLUE"Nix daemon user/group configuration"$ESC""
[ ! -z $CREATE_DAEMON_USERS ] && sudo_prompt
# If the group exists, dscl returns exit code 56.
# Since this is not strictly an error code, standard code
# checking doesn't work as intended.
/usr/bin/dscl . -read /Groups/nixbld &> /dev/null
retCode=$?
if [[ $retCode != 0 ]]; then
echo -e "Creating the "$YELLOW"nixbld"$ESC" group..."
sudo /usr/sbin/dseditgroup -o create -r "Nix build group for nix-daemon" -i 30000 nixbld >&2 || \
exit_message "Problem creating group: nixbld"
else
echo -e "It looks like the "$YELLOW"nixbld"$ESC" group already exists!"
fi
for i in {1..10}; do
/usr/bin/id nixbld${i} &> /dev/null
retCode=$?
if [[ $retCode != 0 ]]; then
echo -e "Creating user: "$YELLOW"nixbld${i}"$ESC"..."
sudo /usr/sbin/sysadminctl -fullName "Nix build user $i" \
-home /var/empty \
-UID $(expr 30000 + $i) \
-addUser nixbld$i >&2 \
|| exit_message "Problem creating user: nixbld${i}"
sudo dscl . -create /Users/nixbld$i IsHidden 1 || \
exit_message "Problem setting 'IsHidden' for user: nixbld${i}"
sudo dscl . -create /Users/nixbld$i UserShell /sbin/nologin || \
exit_message "Problem setting shell for user: nixbld${i}"
sudo /usr/sbin/dseditgroup -o edit -t user -a nixbld$i nixbld || \
exit_message "Problem setting primary group for user: nixbld${i}"
sudo /usr/bin/dscl . -create /Users/nixbld$i PrimaryGroupID 30000 >&2 || \
exit_message "Problem setting PrimaryGroupID for user: nixbld${i}"
else
echo -e "It looks like the "$YELLOW"nixbld${i}"$ESC" user already exists!"
fi
done
[ ! -z $CREATE_DAEMON_USERS ] && exit 0
}
# Installer
install(){
echo -e ""$BLUE_UL"Welcome to the nix-darwin installer!"$ESC""
sudo_prompt || exit
# Link run directory
echo "Setting up /run..."
if ! test -L /run; then
sudo ln -sfn private/var/run /run || exit
fi
# Fetch the nix-darwin repo
echo -e ""$YELLOW"Configuring darwin channel..."$ESC""
sudo nix-channel --add https://github.com/LnL7/nix-darwin/archive/master.tar.gz darwin || exit
sudo nix-channel --update || exit
# Create symlink for old NIX_PATH entry
ln -sfn "/nix/var/nix/profiles/per-user/root/channels/darwin" "$HOME/.nix-defexpr/darwin" || exit
# Copy the example configuration
echo -e "Copying example configuration to "$YELLOW"~/.nixpkgs/darwin-configuration.nix"$ESC"..."
if [ ! -e "$HOME/.nixpkgs/darwin-configuration.nix" ]; then
mkdir -p "$HOME/.nixpkgs" || exit
cp "$HOME/.nix-defexpr/darwin/modules/examples/simple.nix" "$HOME/.nixpkgs/darwin-configuration.nix" || exit
chmod u+w "$HOME/.nixpkgs/darwin-configuration.nix" || exit
fi
# Bootstrap build using default nix.nixPath
echo "Bootstrapping..."
export NIX_PATH=darwin=$HOME/.nix-defexpr/darwin:darwin-config=$HOME/.nixpkgs/darwin-configuration.nix:$NIX_PATH
$(nix-build '<darwin>' -A system --no-out-link)/sw/bin/darwin-rebuild build || exit
$(nix-build '<darwin>' -A system --no-out-link)/sw/bin/darwin-rebuild switch || exit
# Source generated bashrc
. /etc/static/bashrc
# Run first darwin-rebuild switch
echo -e "Running first "$YELLOW"darwin-rebuild switch"$ESC"..."
darwin-rebuild switch && echo -e ""$GREEN"Success!"$ESC"" || exit_message "Problem running darwin-rebuild switch"
echo -e ""$BLUE_UL"Nix daemon"$ESC""
echo "Optionally, this script can also create the group and users"
echo -e "needed for running the Nix "$YELLOW"multi-user support daemon"$ESC"."
echo "If you're unfamiliar with the Nix daemon, see:"
echo -e ""$BLUE_UL"http://nixos.org/nix/manual/#sec-nix-daemon\n"$ESC""
echo "If you decide not to, but later change your mind, you can always re-run"
echo -e "this script with "$YELLOW"-u"$ESC" or "$YELLOW"--create-daemon-users"$ESC""
if ! dscl . -read /Groups/nixbld PrimaryGroupID &> /dev/null; then
while true; do
read -p "Would you like to create the Nix daemon group/users? [y/n] " ANSWER
case $ANSWER in
y|Y)
create_daemon_users || exit
break
;;
n|N)
echo "Not creating Nix daemon group/users"
break
;;
*)
echo "Please answer 'y' or 'n'..."
;;
esac
done
fi
if ! grep /etc/static/bashrc /etc/bashrc &> /dev/null; then
while true; do
read -p "Would you like to configure /etc/bashrc? [y/n] " ANSWER
case $ANSWER in
y|Y)
echo 'if test -e /etc/static/bashrc; then . /etc/static/bashrc; fi' | sudo tee -a /etc/bashrc
break
;;
n|N)
break
;;
*)
echo "Please answer 'y' or 'n'..."
;;
esac
done
fi
# Finish
echo -e ""$GREEN"You're all done!"$ESC""
echo -e "Take a look at "$YELLOW"~/.nixpkgs/darwin-configuration.nix"$ESC" to get started."
echo -e "See the README for more information: "$BLUE_UL"https://github.com/LnL7/nix-darwin/blob/master/README.md"$ESC""
echo
echo "Don't forget to start a new shell or source /etc/bashrc."
}
main(){
# ANSI properties/colours
local ESC='\033[0m'
local BLUE='\033[38;34m'
local BLUE_UL='\033[38;4;34m'
local GREEN='\033[38;32m'
local GREEN_UL='\033[38;4;32m'
local RED='\033[38;31m'
local RED_UL='\033[38;4;31m'
local YELLOW='\033[38;33m'
local YELLOW_UL='\033[38;4;33m'
init $@
sanity
install
}
# Actual run
main $@
} # Prevent execution if this script was only partially downloaded
|
