Add install.sh
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#!/bin/usr/env bash
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# https://nixos.org/manual/nixos/stable/#sec-installation-manual
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# https://wizardzines.com/comics/bash-errors/bash-errors.png
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set -euo pipefail
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exec >> >(tee -i /tmp/install.log)
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exec 2>&1
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clear
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# Friendly introduction.
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echo "0. WELCOME"
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echo "Welcome to the NixOS installation script!"
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echo "This script will ERASE ALL DATA on the partition you will choose next!"
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echo
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read -p "Do you want to continue? Type [Y]es or [N]o. " -n 1 -r
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echo
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if [[ ! $REPLY =~ ^[Yy]$ ]]; then
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exit 1
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fi
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clear
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# Selecting disk.
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echo "1. PARTITIONING"
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echo "Please select a disk to partition:"
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echo
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# Don't separate values by space.
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IFS=$'\n'
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# Set variable containing name and size of all disks.
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declare -a dsks=( $(lsblk -d | tail -n+2 | awk '{print $1" "$4}') )
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# Select value on array.
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select dev in "${dsks[@]}"
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do
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break
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done
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echo
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# Separate values by spaces.
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IFS=' '
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# Create new variable of selection.
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array=("${dev}")
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dev="${array[0]}"
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clear
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echo "2. ENCRYPTION"
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echo
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# Setting encryption password.
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echo "Choose a strong password for encrypting the primary partition:"
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pwcr=""
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while [[ -z "${pwcr}" ]]; do
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echo "Please enter a password: "
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read -rs pwfr
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read -rs -p "Retype a password: " pwsc
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if [[ "${pwfr}" == "${pwsc}" ]];
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then
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pwcr="${pwfr}"
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echo
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echo "Both passwords are the same. Continuing.."
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break
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else
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echo
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echo "You have entered different passwords. Try again.."
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echo
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fi
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done
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clear
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echo "4. USER"
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echo
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# Setting username
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echo "Please enter a username:"
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read -r user
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echo
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echo "5. INSTALLING SYSTEM.."
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echo
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# Starting partitioning.
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echo "Partitioning /dev/${dev}.."
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echo
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# Clearing partition table of selected disk.
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echo "Clearing existing partitioning table."
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sudo parted "/dev/${dev}" -- mklabel gpt
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echo
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# Creating boot partition.
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echo "Creating boot partition of 512 MB."
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sudo parted "/dev/${dev}" -- mkpart ESP 1MB 512MB
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echo
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# Setting type for EFI.
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echo "Setting partition type."
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sudo parted "/dev/${dev}" -- set 1 esp on
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echo
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# Creating system partition.
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echo "Creating system partition."
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sudo parted "/dev/${dev}" -- mkpart 512MB 100%
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echo
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# Print partitions.
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echo "This is your new partition table:"
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lsblk | grep "${dev}"
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echo
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# Get new variable.
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if [[ "${dev}" = "nvme0n1" ]]; then
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main="${dev}p2"
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else
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main="${dev}2"
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fi
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# Encrypting partition.
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echo "Encrypting system partition. This might take a while."
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echo
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echo -en "${pwcr}\n${pwcr}" | sudo cryptsetup -c aes-xts-plain -s 512 luksFormat /dev/$main
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echo "Partition successfully encrypted."
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echo
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# Opening encrypted partition and mounting at /dev/mapper/main.
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echo "Decrypting.. This also might take a while."
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echo
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echo -en "${pwcr}\n${pwcr}" | sudo cryptsetup open "/dev/${main}" main
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echo "Partition successfully opened."
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echo
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lsblk | grep "${dev}"
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echo
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echo "Creating the filesystem."
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if [ "${dev}" = "nvme0n1" ]; then
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boot="${dev}p1"
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else
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boot="${dev}1"
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fi
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sudo mkfs.fat -F 32 -n UEFI "/dev/${boot}"
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echo "Filesystem for boot successfully created."
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echo
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# Creating btrfs partition.
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sudo mkfs.btrfs "/dev/mapper/main"
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sudo mount "/dev/mapper/main" "/mnt"
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sudo btrfs subvolume create "/mnt/root"
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sudo btrfs subvolume create "/mnt/home"
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sudo umount "/mnt"
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echo
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echo "Mounting.."
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sudo mount -o autodefrag,compress=zstd:3,subvol=root "/dev/mapper/main" "/mnt"
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sudo mkdir -p "/mnt/home"
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sudo mount -o autodefrag,compress=zstd:3,subvol=home "/dev/mapper/main" "/mnt/home"
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sudo mkdir -p "/mnt/boot"
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sudo mount -o umask=077 "/dev/${boot}" "/mnt/boot"
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echo "Mounting complete."
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echo
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lsblk -a
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echo
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# Copy existing config
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sudo nixos-generate-config --root /mnt
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sudo mv /mnt/etc/nixos/configuration.nix /mnt/etc/nixos/configuration.nix.bak
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cp configuration.nix /mnt/etc/nixos
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# Replace username in config
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sudo sed -i "s/username/${user}/g" /mnt/etc/nixos/configuration.nix
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# Install
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sudo nixos-install
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# Set user password
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sudo nixos-enter --root /mnt -c 'passwd $user'
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