From 079c9c37a50621d224b98cd42acbc3afd0eaf5d8 Mon Sep 17 00:00:00 2001
From: coolneng <akasroua@gmail.com>
Date: Tue, 12 Jul 2022 16:39:43 +0200
Subject: [PATCH] Initial commit

---
 .gitattributes |  1 +
 README.md      | 17 +++++++++++++++++
 sd-image.nix   | 19 +++++++++++++++++++
 3 files changed, 37 insertions(+)
 create mode 100644 .gitattributes
 create mode 100644 README.md
 create mode 100644 sd-image.nix

diff --git a/.gitattributes b/.gitattributes
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+++ b/.gitattributes
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+*.zst filter=lfs diff=lfs merge=lfs -text
diff --git a/README.md b/README.md
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+# Custom SD image for Raspberry Pi 4
+
+This repository contains the instructions and configuration to build a SD image with a bigger /boot partition size and my SSH public keys
+
+## Usage
+
+1. Enable QEMU on the host machine by adding the following option
+
+```{nix}
+boot.binfmt.emulatedSystems = [ "aarch64-linux" ];
+```
+
+2. Build the image
+
+```{bash}
+nix-build '<nixpkgs/nixos>' -A config.system.build.sdImage -I nixos-config=./sd-image.nix --argstr system aarch64-linux
+```
diff --git a/sd-image.nix b/sd-image.nix
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+{ ... }: {
+  imports = [
+    <nixpkgs/nixos/modules/installer/sd-card/sd-image-aarch64.nix>
+  ];
+
+  # Add SSH key
+  users.extraUsers.root.openssh.authorizedKeys.keys = [
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFRqINHR7/zc+c3/PuR+NeSsBHXXzBiEtFWSK6QaxQTW coolneng@panacea"
+  ];
+  users.extraUsers.nixos = {
+    isNormalUser = true;
+    openssh.authorizedKeys.keys = [
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFRqINHR7/zc+c3/PuR+NeSsBHXXzBiEtFWSK6QaxQTW coolneng@panacea"
+    ];
+  };
+
+  # Increase /boot partition size
+  sdImage.firmwareSize = 256;
+}