From a021f639c14de5a696d11d06510ed26fbf70382c Mon Sep 17 00:00:00 2001
From: cmacrae <calum0macrae@gmail.com>
Date: Wed, 31 May 2017 21:08:36 +0100
Subject: [PATCH] bootstrap: initial commit

---
 bootstrap.sh | 133 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100755 bootstrap.sh

diff --git a/bootstrap.sh b/bootstrap.sh
new file mode 100755
index 00000000..3d7fddf8
--- /dev/null
+++ b/bootstrap.sh
@@ -0,0 +1,133 @@
+#! /usr/bin/env bash
+set -e
+set -o pipefail
+
+# 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"$ESC" is already installed..."
+	exit 1
+    fi
+}
+
+# Exit with message
+exit_message(){
+    echo -e ""$RED"$1"$ESC"" >&2
+    exit 1
+}
+
+# Installer
+install(){
+    echo -e ""$BLUE"Welcome to the nix-darwin installer!"$ESC""
+
+    # Prompt for nix package upgrade
+    echo -e "Ensuring "$YELLOW"nixpkgs"$ESC" version meets requirements..."
+    echo -e "To do this, the following will be run to upgrade the "$YELLOW"nix"$ESC" package:"
+    echo -e ""$YELLOW"nix-env -iA nixpkgs.nix"$ESC"\n"
+    echo "If you have a recent install of Nix, this may not be necessary, but should not cause any harm to run"
+    while true ; do
+	read -p "Would you like to upgrade? [y/n] " ANSWER
+	case $ANSWER in
+	    y|Y)
+		echo "Proceeding with upgrade..."
+		nix-env -iA nixpkgs.nix
+		break
+		;;
+	    n|N)
+		echo "Proceeding without upgrading..."
+		break
+		;;
+	    *)
+		echo "Please answer 'y' or 'n'..."
+	esac
+    done
+
+    # Prompt for initial sudo password & keep alive
+    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 &
+
+
+    # Link run directory
+    echo "Setting up /run..."
+    test -L /run || sudo ln -s /private/var/run /run
+
+    # Fetch the nix-darwin repo as a zip (shouldn't assume presence of git)
+    REPO_DOWNLOAD=/tmp/nix-darwin-$(date +%Y%m%d).zip
+    if [ ! -f $REPO_DOWNLOAD ]; then
+	echo -e ""$YELLOW"Fetching nix-darwin repo..."$ESC""
+	curl -Lo $REPO_DOWNLOAD https://github.com/LnL7/nix-darwin/archive/master.zip || \
+	    exit_message "Problem downloading nix-darwin repo"
+    fi
+
+    # Extract the repository
+    echo -e "Extracting repo to "$YELLOW"~/.nix-defexpr/darwin"$ESC"..."
+    mkdir -p ~/.nix-defexpr
+    cd ~/.nix-defexpr
+    unzip -q $REPO_DOWNLOAD && echo -e ""$GREEN"Success!"$ESC""
+    mv nix-darwin-master darwin
+    cd - &> /dev/null
+
+    # Copy the example configuration
+    echo -e "Copying example configuration to "$YELLOW"~/.nixpkgs/darwin-configuration.nix"$ESC"..."
+    mkdir -p ~/.nixpkgs
+    cp ~/.nix-defexpr/darwin/modules/examples/simple.nix ~/.nixpkgs/darwin-configuration.nix
+
+    # Bootstrap build using default nix.nixPath
+    echo "Bootstrapping..."
+    export NIX_PATH=darwin=$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
+    $(nix-build '<darwin>' -A system --no-out-link)/sw/bin/darwin-rebuild switch
+
+    # Source generated bashrc
+    . /etc/static/bashrc
+
+    # Run first darwin-rebuild switch
+    echo -e "Running first "$YELLOW"darwin-rebuild switch"$ESC"..."
+    darwin-rebuild switch && echo -e ""$GREEN"Success!"$ESC"" || exit_message "Problem running darwin-rebuild switch"
+
+    echo -e ""$BLUE"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""
+}
+
+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'
+
+    sanity
+    install
+}
+
+# Actual run
+main