From e122ca0006c96b562c62b89fdcdabb633068905e Mon Sep 17 00:00:00 2001
From: yuri <yuri@nekover.se>
Date: Tue, 1 Aug 2023 14:21:06 +0200
Subject: [PATCH] Enable console on serial port and print public ssh host key
 when booting

---
 configuration/common/default.nix     | 18 ++++++++++++++++++
 configuration/proxmox-vm/default.nix |  6 ++++++
 hosts.nix                            |  1 -
 3 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/configuration/common/default.nix b/configuration/common/default.nix
index 2136658..1b2b085 100644
--- a/configuration/common/default.nix
+++ b/configuration/common/default.nix
@@ -51,5 +51,23 @@
     preliminarySelfsigned = true;
   };
 
+  # Print the ed25519 public ssh host key to console when booting
+  systemd.units."print-public-ssh-host-key.service" = {
+    enable = true;
+    text = ''
+      [Unit]
+      Description=print-public-ssh-host-key.service
+      Before=getty@tty1.service
+
+      [Service]
+      Type=oneshot
+      ExecStart=/run/current-system/sw/bin/bash -c "/run/current-system/sw/bin/echo ----- ED25519 PUBLIC SSH HOST KEY -----\
+                && /run/current-system/sw/bin/cut -d ' ' -f 1-2 /etc/ssh/ssh_host_ed25519_key.pub"
+      RemainAfterExit=no
+      StandardOutput=tty
+    '';
+    wantedBy = [ "multi-user.target" ];
+  };
+
   services.fstrim.enable = true;
 }
diff --git a/configuration/proxmox-vm/default.nix b/configuration/proxmox-vm/default.nix
index 65105c0..47ed7df 100644
--- a/configuration/proxmox-vm/default.nix
+++ b/configuration/proxmox-vm/default.nix
@@ -1,4 +1,10 @@
 { ... }:
 {
+  # Enable console output on TTY1 and serial console
+  boot.kernelParams = [
+    "console=tty1"
+    "console=ttyS0,115200"
+  ];
+
   services.qemuGuest.enable = true;
 }
diff --git a/hosts.nix b/hosts.nix
index 2ba24de..133f155 100644
--- a/hosts.nix
+++ b/hosts.nix
@@ -7,7 +7,6 @@ let
       ./configuration/proxmox-vm/hardware-configuration.nix
     ]; 
   };
-  # 
   generateDefaults = hosts: builtins.mapAttrs (name: {
     hostNixpkgs ? nixpkgs,
     system ? "x86_64-linux",