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@@ -1,3 +1,4 @@
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# ruff: noqa: LOG015, E501, D102, D103, D107 These need the be fixed
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"""Install NixOS on a ZFS pool."""
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from __future__ import annotations
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@@ -16,9 +17,6 @@ from typing import TYPE_CHECKING
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if TYPE_CHECKING:
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from collections.abc import Sequence
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logger = logging.getLogger(__name__)
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ESCAPE_KEY = 27
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def configure_logger(level: str = "INFO") -> None:
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"""Configure the logger.
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@@ -44,7 +42,7 @@ def bash_wrapper(command: str) -> str:
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Tuple[str, int]: A tuple containing the output of the command (stdout) as a string,
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the error output (stderr) as a string (optional), and the return code as an integer.
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"""
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logger.debug(f"running {command=}")
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logging.debug(f"running {command=}")
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# This is a acceptable risk
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process = Popen(command.split(), stdout=PIPE, stderr=PIPE)
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output, _ = process.communicate()
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@@ -65,7 +63,7 @@ def partition_disk(disk: str, swap_size: int, reserve: int = 0) -> None:
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reserve (int, optional): The size of the reserve partition in GB. Defaults to 0.
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minimum value is 0.
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"""
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logger.info(f"partitioning {disk=}")
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logging.info(f"partitioning {disk=}")
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swap_size = max(swap_size, 1)
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reserve = max(reserve, 0)
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@@ -73,16 +71,16 @@ def partition_disk(disk: str, swap_size: int, reserve: int = 0) -> None:
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if reserve > 0:
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msg = f"Creating swap partition on {disk=} with size {swap_size=}GiB and reserve {reserve=}GiB"
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logger.info(msg)
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logging.info(msg)
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swap_start = swap_size + reserve
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swap_partition = f"mkpart swap -{swap_start}GiB -{reserve}GiB "
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else:
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logger.info(f"Creating swap partition on {disk=} with size {swap_size=}GiB")
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logging.info(f"Creating swap partition on {disk=} with size {swap_size=}GiB")
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swap_start = swap_size
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swap_partition = f"mkpart swap -{swap_start}GiB 100% "
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logger.debug(f"{swap_partition=}")
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logging.debug(f"{swap_partition=}")
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create_partitions = (
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f"parted --script --align=optimal {disk} -- "
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@@ -94,7 +92,7 @@ def partition_disk(disk: str, swap_size: int, reserve: int = 0) -> None:
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)
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bash_wrapper(create_partitions)
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logger.info(f"{disk=} successfully partitioned")
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logging.info(f"{disk=} successfully partitioned")
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def create_zfs_pool(pool_disks: Sequence[str], mnt_dir: str) -> None:
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@@ -133,7 +131,7 @@ def create_zfs_pool(pool_disks: Sequence[str], mnt_dir: str) -> None:
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bash_wrapper(zpool_create)
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zpools = bash_wrapper("zpool list -o name")
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if "root_pool" not in zpools.splitlines():
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logger.critical("Failed to create root_pool")
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logging.critical("Failed to create root_pool")
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sys.exit(1)
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@@ -153,7 +151,7 @@ def create_zfs_datasets() -> None:
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}
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missing_datasets = expected_datasets.difference(datasets.splitlines())
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if missing_datasets:
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logger.critical(f"Failed to create pools {missing_datasets}")
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logging.critical(f"Failed to create pools {missing_datasets}")
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sys.exit(1)
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@@ -166,7 +164,8 @@ def get_cpu_manufacturer() -> str:
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for line in output.splitlines():
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if "vendor_id" in line:
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return id_vendor[line.split(": ")[1].strip()]
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error = "Failed to get CPU manufacturer"
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error = "CPU manufacturer not found"
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raise RuntimeError(error)
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@@ -201,15 +200,7 @@ def create_nix_hardware_file(mnt_dir: str, disks: Sequence[str], *, encrypt: boo
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' imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];\n\n'
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" boot = {\n"
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" initrd = {\n"
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" availableKernelModules = [ \n"
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' "ahci"\n'
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' "ehci_pci"\n'
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' "nvme"\n'
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' "sd_mod"\n'
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' "usb_storage"\n'
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' "usbhid"\n'
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' "xhci_pci"\n'
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" ];\n"
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' availableKernelModules = [ \n "ahci"\n "ehci_pci"\n "nvme"\n "sd_mod"\n "usb_storage"\n "usbhid"\n "xhci_pci"\n ];\n'
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" kernelModules = [ ];\n"
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f" {devices}"
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" };\n"
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@@ -223,18 +214,11 @@ def create_nix_hardware_file(mnt_dir: str, disks: Sequence[str], *, encrypt: boo
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' "/nix" = {\n device = "root_pool/nix";\n fsType = "zfs";\n };\n\n'
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' "/boot" = {\n'
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f' device = "/dev/disk/by-uuid/{get_boot_drive_id(disks[0])}";\n'
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' fsType = "vfat";\n'
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" options = [\n"
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' "fmask=0077"\n'
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' "dmask=0077"\n'
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" ];\n"
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" };\n"
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" };\n\n"
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' fsType = "vfat";\n options = [\n "fmask=0077"\n "dmask=0077"\n ];\n };\n };\n\n'
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" swapDevices = [ ];\n\n"
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" networking.useDHCP = lib.mkDefault true;\n\n"
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' nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";\n'
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f" hardware.cpu.{cpu_manufacturer}.updateMicrocode = lib.mkDefault "
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"config.hardware.enableRedistributableFirmware;\n"
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f" hardware.cpu.{cpu_manufacturer}.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;\n"
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f' networking.hostId = "{host_id}";\n'
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"}\n"
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)
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@@ -272,30 +256,18 @@ def installer(
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encrypt_key: str | None,
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) -> None:
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"""Main."""
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logger.info("Starting installation")
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logging.info("Starting installation")
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for disk in disks:
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partition_disk(disk, swap_size, reserve)
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if encrypt_key:
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sleep(1)
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key_input = encrypt_key.encode()
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run(
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("cryptsetup", "luksFormat", "--type", "luks2", f"{disk}-part2", "-"),
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input=key_input,
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check=True,
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)
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run(
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(
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"cryptsetup",
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"luksOpen",
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f"{disk}-part2",
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f"luks-root-pool-{disk.split('/')[-1]}-part2",
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"-",
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),
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input=key_input,
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check=True,
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)
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for command in (
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f'printf "{encrypt_key}" | cryptsetup luksFormat --type luks2 {disk}-part2 -',
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f'printf "{encrypt_key}" | cryptsetup luksOpen {disk}-part2 luks-root-pool-{disk.split("/")[-1]}-part2 -',
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):
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run(command, shell=True, check=True) # noqa: S602
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mnt_dir = "/tmp/nix_install" # noqa: S108
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@@ -310,73 +282,59 @@ def installer(
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create_zfs_datasets()
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install_nixos(mnt_dir, disks, encrypt=bool(encrypt_key))
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install_nixos(mnt_dir, disks, encrypt=encrypt_key)
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logger.info("Installation complete")
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logging.info("Installation complete")
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class Cursor:
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"""Track cursor position and constrain movement to screen bounds."""
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"""Cursor class to store the cursor position."""
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def __init__(self) -> None:
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"""Initialize cursor position and screen dimensions."""
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self.x_position = 0
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self.y_position = 0
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self.height = 0
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self.width = 0
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def set_height(self, height: int) -> None:
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"""Set the maximum screen height."""
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self.height = height
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def set_width(self, width: int) -> None:
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"""Set the maximum screen width."""
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self.width = width
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def x_bounce_check(self, cursor: int) -> int:
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"""Clamp an x position to the screen width."""
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cursor = max(0, cursor)
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return min(self.width - 1, cursor)
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def y_bounce_check(self, cursor: int) -> int:
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"""Clamp a y position to the screen height."""
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cursor = max(0, cursor)
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return min(self.height - 1, cursor)
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def set_x(self, x: int) -> None:
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"""Set the cursor x position."""
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self.x_position = self.x_bounce_check(x)
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def set_y(self, y: int) -> None:
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"""Set the cursor y position."""
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self.y_position = self.y_bounce_check(y)
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def get_x(self) -> int:
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"""Get the cursor x position."""
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return self.x_position
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def get_y(self) -> int:
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"""Get the cursor y position."""
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return self.y_position
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def move_up(self) -> None:
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"""Move the cursor up one row."""
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self.set_y(self.y_position - 1)
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def move_down(self) -> None:
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"""Move the cursor down one row."""
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self.set_y(self.y_position + 1)
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def move_left(self) -> None:
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"""Move the cursor left one column."""
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self.set_x(self.x_position - 1)
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def move_right(self) -> None:
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"""Move the cursor right one column."""
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self.set_x(self.x_position + 1)
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def navigation(self, key: int) -> None:
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"""Move the cursor for a curses navigation key."""
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action = {
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curses.KEY_DOWN: self.move_down,
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curses.KEY_UP: self.move_up,
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@@ -391,7 +349,6 @@ class State:
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"""State class to store the state of the program."""
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def __init__(self) -> None:
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"""Initialize installer menu state."""
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self.key = 0
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self.cursor = Cursor()
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@@ -409,7 +366,6 @@ class State:
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def get_device(raw_device: str) -> dict[str, str]:
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"""Parse an lsblk key-value device row."""
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raw_device_components = raw_device.split(" ")
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return {thing.split("=")[0].lower(): thing.split("=")[1].strip('"') for thing in raw_device_components}
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@@ -439,7 +395,6 @@ def get_device_id_mapping() -> dict[str, set[str]]:
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def calculate_device_menu_padding(devices: list[dict[str, str]], column: str, padding: int = 0) -> int:
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"""Calculate the width needed for a device menu column."""
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return max(len(device[column]) for device in devices) + padding
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@@ -451,7 +406,6 @@ def draw_device_ids(
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menu_width: list[int],
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device_ids: set[str],
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) -> tuple[State, int]:
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"""Draw selectable device IDs for a device row."""
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for device_id in sorted(device_ids):
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row_number = row_number + 1
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if row_number == state.cursor.get_y() and state.cursor.get_x() in menu_width:
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@@ -480,7 +434,7 @@ def draw_device_menu(
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state: State,
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menu_start_y: int = 0,
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menu_start_x: int = 0,
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) -> tuple[State, int]:
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) -> State:
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"""Draw the device menu and handle user input.
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Args:
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@@ -536,7 +490,6 @@ def draw_device_menu(
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def debug_menu(std_screen: curses.window, key: int) -> None:
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"""Draw debug information for the current curses screen."""
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height, width = std_screen.getmaxyx()
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width_height = f"Width: {width}, Height: {height}"
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std_screen.addstr(height - 4, 0, width_height, curses.color_pair(5))
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@@ -556,7 +509,6 @@ def status_bar(
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width: int,
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height: int,
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) -> None:
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"""Draw the footer status bar."""
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std_screen.attron(curses.A_REVERSE)
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std_screen.attron(curses.color_pair(3))
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@@ -569,7 +521,6 @@ def status_bar(
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def set_color() -> None:
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"""Initialize curses color pairs."""
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curses.start_color()
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curses.use_default_colors()
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for i in range(curses.COLORS):
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@@ -577,7 +528,6 @@ def set_color() -> None:
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def get_text_input(std_screen: curses.window, prompt: str, y: int, x: int) -> str:
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"""Read text input from a curses screen."""
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curses.echo()
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std_screen.addstr(y, x, prompt)
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input_str = ""
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@@ -585,7 +535,7 @@ def get_text_input(std_screen: curses.window, prompt: str, y: int, x: int) -> st
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key = std_screen.getch()
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if key == ord("\n"):
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break
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if key == ESCAPE_KEY:
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if key == 27: # ESC key # noqa: PLR2004
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input_str = ""
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break
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if key in (curses.KEY_BACKSPACE, ord("\b"), 127):
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@@ -603,7 +553,6 @@ def swap_size_input(
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state: State,
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swap_offset: int,
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) -> State:
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"""Handle swap size input."""
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swap_size_text = "Swap size (GB): "
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std_screen.addstr(swap_offset, 0, f"{swap_size_text}{state.swap_size}")
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if state.key == ord("\n") and state.cursor.get_y() == swap_offset:
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@@ -627,7 +576,6 @@ def reserve_size_input(
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state: State,
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reserve_offset: int,
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) -> State:
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"""Handle reserve size input."""
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reserve_size_text = "reserve size (GB): "
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std_screen.addstr(reserve_offset, 0, f"{reserve_size_text}{state.reserve_size}")
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if state.key == ord("\n") and state.cursor.get_y() == reserve_offset:
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@@ -651,7 +599,6 @@ def draw_menu(std_screen: curses.window) -> State:
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Args:
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std_screen (curses.window): the curses window to draw on
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Returns:
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State: the state object
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"""
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@@ -711,18 +658,17 @@ def draw_menu(std_screen: curses.window) -> State:
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def main() -> None:
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"""Run the installer menu and start installation."""
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configure_logger("DEBUG")
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state = curses.wrapper(draw_menu)
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encrypt_key = getenv("ENCRYPT_KEY")
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logger.info("installing_nixos")
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logger.info(f"disks: {state.selected_device_ids}")
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logger.info(f"swap_size: {state.swap_size}")
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logger.info(f"reserve: {state.reserve_size}")
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logger.info(f"encrypted: {bool(encrypt_key)}")
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logging.info("installing_nixos")
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logging.info(f"disks: {state.selected_device_ids}")
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logging.info(f"swap_size: {state.swap_size}")
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logging.info(f"reserve: {state.reserve_size}")
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logging.info(f"encrypted: {bool(encrypt_key)}")
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sleep(3)
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