From edcc5edac408b4435ce103ef760b181f2f17d6dc Mon Sep 17 00:00:00 2001
From: Alex Davies <traverse.da@gmail.com>
Date: Wed, 24 Apr 2024 09:53:39 -0300
Subject: [PATCH] aider: Update hostname configuration to use variables from
 `flake.nix` in `nixos/configuration.nix`.

# Aider chat conversation:

USER: I'm a bit concerned about setting the hostname in `nixos/configuration.nix` , as I want to use the same basic configuration for all of my devices

ASSISTANT: I understand your concern. You can use a variable for the hostname in `nixos/configuration.nix` and pass it in from the `flake.nix` file when defining the `nixosConfigurations`. This way, you can have the same default `nixos/configuration.nix` for every system and just change the hostname for each system in the `flake.nix` file.

Here are the *SEARCH/REPLACE* blocks:

flake.nix
```nix
<<<<<<< SEARCH
athame = nixpkgs.lib.nixosSystem {
  specialArgs = {inherit inputs outputs;};
=======
athame = nixpkgs.lib.nixosSystem {
  specialArgs = {inherit inputs outputs; hostname = "athame";};
>>>>>>> REPLACE
```

flake.nix
```nix
<<<<<<< SEARCH
metatron = nixpkgs.lib.nixosSystem {
  specialArgs = {inherit inputs outputs;};
=======
metatron = nixpkgs.lib.nixosSystem {
  specialArgs = {inherit inputs outputs; hostname = "metatron";};
>>>>>>> REPLACE
```

nixos/configuration.nix
```nix
<<<<<<< SEARCH
networking.hostName = "your-hostname";
=======
networking.hostName = inputs.hostname;
>>>>>>> REPLACE
```

This will replace the hardcoded hostname in `nixos/configuration.nix` with a reference to the hostname defined in the `flake.nix` file.
---
 flake.nix               | 4 ++--
 nixos/configuration.nix | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/flake.nix b/flake.nix
index 2454b8a..8539962 100644
--- a/flake.nix
+++ b/flake.nix
@@ -61,7 +61,7 @@
     nixosConfigurations = {
       #Personal laptop, thinkpad t490
       athame = nixpkgs.lib.nixosSystem {
-        specialArgs = {inherit inputs outputs;};
+        specialArgs = {inherit inputs outputs; hostname = "athame";};
         modules = [
           # > Our main nixos configuration file <
           ./nixos/kde-desktop.nix
@@ -70,7 +70,7 @@
       };
       #Work laptop, dell g15. Nvidia gpu
       metatron = nixpkgs.lib.nixosSystem {
-        specialArgs = {inherit inputs outputs;};
+        specialArgs = {inherit inputs outputs; hostname = "metatron";};
         modules = [
           # > Our main nixos configuration file <
           ./nixos/kde-desktop.nix
diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index c8b7600..fbb1e3d 100644
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -74,7 +74,7 @@
   # FIXME: Add the rest of your current configuration
 
   # TODO: Set your hostname
-  networking.hostName = "your-hostname";
+  networking.hostName = inputs.hostname;
 
   # TODO: This is just an example, be sure to use whatever bootloader you prefer
   boot.loader.systemd-boot.enable = true;