From ff97141e6fe173c107db79583354036cf5289ca2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Leonardo=20Eug=C3=AAnio?= <lelgenio@disroot.org>
Date: Tue, 20 Dec 2022 00:47:24 -0300
Subject: [PATCH] i15: update config

---
 hosts/i15.nix  | 18 +++++++++----
 install/i15.sh | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 85 insertions(+), 5 deletions(-)
 create mode 100644 install/i15.sh

diff --git a/hosts/i15.nix b/hosts/i15.nix
index 61b3803..0bcde49 100644
--- a/hosts/i15.nix
+++ b/hosts/i15.nix
@@ -2,8 +2,9 @@
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
 { config, lib, pkgs, modulesPath, ... }:
-
-{
+let
+  btrfs_options = [ "compress=zstd:3" "noatime" ];
+in {
   imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
 
   boot.initrd.availableKernelModules =
@@ -12,6 +13,13 @@
   boot.kernelModules = [ "kvm-intel" ];
   boot.extraModulePackages = [ ];
 
+  boot.initrd.luks.devices = {
+    "main" = {
+      bypassWorkqueues = true;
+      device = "/dev/disk/by-label/CRYPT_ROOT";
+    };
+  };
+
   fileSystems."/boot/efi" = {
     device = "/dev/disk/by-label/NIX_BOOT";
     fsType = "vfat";
@@ -20,13 +28,13 @@
   fileSystems."/" = {
     device = "/dev/disk/by-label/NIX_ROOT";
     fsType = "btrfs";
-    options = [ "subvol=nixos" "compress=zstd" "noatime" ];
+    options = [ "subvol=nixos" ] ++ btrfs_options;
   };
 
   fileSystems."/home" = {
     device = "/dev/disk/by-label/NIX_ROOT";
     fsType = "btrfs";
-    options = [ "subvol=home" "compress=zstd" "noatime" ];
+    options = [ "subvol=home" ] ++ btrfs_options;
   };
 
   swapDevices = [{
@@ -42,7 +50,7 @@
   # networking.interfaces.enp2s0.useDHCP = lib.mkDefault true;
   # networking.interfaces.wlp1s0.useDHCP = lib.mkDefault true;
 
-  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
+  powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
   hardware.cpu.intel.updateMicrocode =
     lib.mkDefault config.hardware.enableRedistributableFirmware;
   networking.hostName = "i15"; # Define your hostname.
diff --git a/install/i15.sh b/install/i15.sh
new file mode 100644
index 0000000..d5ec222
--- /dev/null
+++ b/install/i15.sh
@@ -0,0 +1,72 @@
+#!/bin/sh
+
+test -f ./flake.nix || {
+    echo 'This should be run from the root of the repository!'
+    exit 1
+}
+
+lsblk
+echo 'Enter the name of the device to WIPE and install (something like "sda"):'
+read DRIVE_ID
+
+echo 'Enter a passphrase to encrypt the disk:'
+read -s DRIVE_PASSPHRASE
+
+echo "Creating partition table..."
+parted -s "/dev/${DRIVE_ID}" -- mklabel gpt || exit 1
+
+echo "Creating EFI system partition..."
+parted -s "/dev/${DRIVE_ID}" -- mkpart ESP 1MiB 1GiB &&
+parted -s "/dev/${DRIVE_ID}" -- set 1 boot on &&
+mkfs.fat -F32 "/dev/${DRIVE_ID}1" -n NIX_BOOT || exit 1
+
+echo "Creating encrypted root partition..."
+parted -s "/dev/${DRIVE_ID}" -- mkpart luks 1GiB 100% &&
+echo "$DRIVE_PASSPHRASE" | cryptsetup --batch-mode luksFormat --label CRYPT_ROOT "/dev/${DRIVE_ID}2" &&
+echo "$DRIVE_PASSPHRASE" | cryptsetup luksOpen "/dev/${DRIVE_ID}2" "crypt_root" && {
+
+    echo "Creating btrfs partition..."
+    mkfs.btrfs --quiet --label NIX_ROOT /dev/mapper/"crypt_root" &&
+    MNTPOINT=$(mktemp -d) &&
+    mount /dev/mapper/"crypt_root" "$MNTPOINT" && {
+
+        echo "Creating subvolumes..."
+        btrfs subvolume create "$MNTPOINT"/main
+        btrfs subvolume create "$MNTPOINT"/home
+        btrfs subvolume create "$MNTPOINT"/swap
+
+    }
+
+    echo "Closing btrfs partition..."
+    umount -Rl "$MNTPOINT" &&
+    rm -rf "$MNTPOINT"
+
+    echo "Mounting root btrfs submodule..."
+    MNTPOINT=$(mktemp -d) &&
+    mount /dev/mapper/"crypt_root" "$MNTPOINT" -o subvol=main,noatime,compress=zstd && {
+
+        echo "Creating and mounting EFI system partition mountpoint..."
+        mkdir -p "$MNTPOINT/boot/efi" &&
+        mount "/dev/${DRIVE_ID}1" "$MNTPOINT/boot/efi" &&
+
+        echo "Creating home partition mountpoint..." &&
+        mkdir -p "$MNTPOINT/home" &&
+        mount /dev/mapper/"crypt_root" "$MNTPOINT/home" -o subvol=home,noatime,compress=zstd &&
+
+        echo "Swapfile" &&
+        mkdir -p "$MNTPOINT/swap" &&
+        mount /dev/mapper/"crypt_root" "$MNTPOINT/home" -o subvol=swap,noatime &&
+
+        echo "Installing system..." &&
+        nixos-install --flake .#i15 --root "$MNTPOINT"
+
+    }
+
+    echo "Closing root btrfs submodule..."
+    umount -Rl "$MNTPOINT" &&
+    rm -rf "$MNTPOINT"
+
+}
+
+echo "Closing encrypted root partition..."
+cryptsetup close "crypt_root"