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https://github.com/mrkkrp/nixos-config

My NixOS configurations
https://github.com/mrkkrp/nixos-config

configuration nixos

Last synced: 3 months ago
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My NixOS configurations

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README 

        
# NixOS instructions



This document describes how to install [NixOS](https://nixos.org) and

configure it.



## Intro



* Disable the secure boot.

* Disable the RAID mode (e.g. System Configuration -> SATA Operation ->

  Select AHCI.).

* If you have a UEFI system, you should boot in the UEFI mode.

* Boot from your installation medium. Use the graphical installation medium,

  because it provides an easier interface for turning on WiFi.



## Partitioning and formatting



* Use `lsblk` to see what devices/partitions you have.

* If you don't have devices at `/dev/nvme_*` you forgot to turn off the RAID

  mode.

* Use `fdisk` (BIOS) or `gdisk` (UEFI) to edit the partition table.



Partition  | Size      |  Code | Purpose

:----------|:----------|:------|:-------------

1          | 500 MiB   | EF00  | EFI partition

2          | remaining | 8300  | root file system



## LUKS disk encryption



Create an encrypted root with a key you can remember:



```console

# cryptsetup luksFormat /dev/nvme0n1p2

```



Then open it:



```console

# cryptsetup luksOpen /dev/nvme0n1p2 cryptroot

```



## File systems



Create the file system for the root partition:



```console

# mkfs.ext4 /dev/mapper/cryptroot

```



Rebuild the boot partition:



```console

# mkfs.vfat /dev/nvme0n1p1

```



Check the disk mapping:



```console

$ ls -l /dev/disk/by-uuid/

```



Decrypted root partition will be the one that is linked to something like

`dm-0`. You can confirm it by running:



```console

$ ls -la /dev/mapper

```



Mount the decrypted cryptroot to `/mnt`:



```console

# mount /dev/disk/by-uuid/ /mnt

```



Setup and mount the boot partition:



```console

# mkdir /mnt/boot

# mount /dev/disk/by-uuid/AAAA-AAAA /mnt/boot

```



## Initial configuration



Generate an initial configuration:



```console

# nixos-generate-config --root /mnt

```



Hardware configuration should already be OK. Edit the

`/mnt/etc/nixos/configuration.nix` as needed to create a minimal system for

bootstrapping:



* Make sure that the system has `git` and a normal user.

* Make sure to set `networking.networkmanager.enable = true`, otherwise you

  won't have WiFi when you boot into your new system.

* Make sure to enable SDDM and Plasma (just uncomment the relevant lines in

  the template).



## Installation



Do the installation:



```console

# nixos-install

```



Enter the root password when asked. Reboot.



## Setting password for the normal user



It may be necessary to first login as `root` and set password for the normal

user with the `passwd` command. After that you can re-login as the normal

user.



## Copy your SSH and GPG keys



Now is the right time to do that. Be sure to set `600` mode for

`~/.ssh/id_rsa`:



```console

$ chmod 600 ~/.ssh/id_rsa

```



## The final rebuild



Clone this repo:



```console

$ mkdir -p ~/projects/mrkkrp

$ cd ~/projects/mrkkrp

$ git clone [email protected]:mrkkrp/nixos-config.git nixos-config

```



Create a new configuration under `devices` by copying the previously

generated `/etc/nixos/configuration.nix` and

`/etc/nixos/hardware-configuration.nix`. Add a new entry in `flake.nix`

following the existing examples.



Build the system (execute from `~/projects/mrkkrp/nixos-config`):



```consoule

$ nixos-rebuild --use-remote-sudo switch --flake .#

```



Reboot.



## Update



To update the system do:



```console

$ nixos switch

```