feat: expose --generate-hardware-config nixos-facter thru TF

add `var.nixos_facter_path` to TF modules `install` / `all-in-one`.

c.f. #407, which handled `--generate-hardware-config
nixos-generate-config`.

Author: KiaraGrouwstra

terraform/all-in-one.md

@@ -128,6 +128,7 @@ No resources.
 | <a name="input_target_port"></a> [target\_port](#input_target_port)                                                   | SSH port used to connect to the target\_host after installing NixOS. If install\_port is not set than this port is also used before installing.                                                                                                           | `number`                                                               | `22`                                                                    |    no    |
 | <a name="input_target_user"></a> [target\_user](#input_target_user)                                                   | SSH user used to connect to the target\_host after installing NixOS. If install\_user is not set than this user is also used before installing.                                                                                                           | `string`                                                               | `"root"`                                                                |    no    |
 | <a name="input_nixos_generate_config_path"></a> [nixos\_generate\_config\_path](#input_nixos_generate_config_path)    | Path to which to write a `hardware-configuration.nix` generated by `nixos-generate-config`.                                                                        | `string`                                                               | `""`                                                                |    no    |
+| <a name="input_nixos_facter_path"></a> [nixos\_facter\_path](#input_nixos_facter_path)                                | Path to which to write a `hardware-configuration.nix` generated by `nixos-facter`.                                                                                 | `string`                                                               | `""`                                                                |    no    |
 
 ## Outputs
 

terraform/all-in-one/main.tf

@@ -33,6 +33,7 @@ module "install" {
   instance_id                  = var.instance_id
   phases                       = var.phases
   nixos_generate_config_path   = var.nixos_generate_config_path
+  nixos_facter_path            = var.nixos_facter_path
   # deprecated attributes
   stop_after_disko             = var.stop_after_disko
   no_reboot                    = var.no_reboot

terraform/all-in-one/variables.tf

@@ -125,3 +125,9 @@ variable "nixos_generate_config_path" {
   description = "Path to which to write a `hardware-configuration.nix` generated by `nixos-generate-config`."
   default     = ""
 }
+
+variable "nixos_facter_path" {
+  type        = string
+  description = "Path to which to write a `facter.json` generated by `nixos-facter`."
+  default     = ""
+}

terraform/install.md

@@ -82,6 +82,7 @@ No modules.
 | <a name="input_target_port"></a> [target\_port](#input_target_port)                                                   | SSH port used to connect to the target\_host                                                                                                                         | `number`                                                               | `22`                                                                    |    no    |
 | <a name="input_target_user"></a> [target\_user](#input_target_user)                                                   | SSH user used to connect to the target\_host                                                                                                                         | `string`                                                               | `"root"`                                                                |    no    |
 | <a name="input_nixos_generate_config_path"></a> [nixos\_generate\_config\_path](#input_nixos_generate_config_path)    | Path to which to write a `hardware-configuration.nix` generated by `nixos-generate-config`.                                                                        | `string`                                                               | `""`                                                                |    no    |
+| <a name="input_nixos_facter_path"></a> [nixos\_facter\_path](#input_nixos_facter_path)                                | Path to which to write a `hardware-configuration.nix` generated by `nixos-facter`.                                                                                 | `string`                                                               | `""`                                                                |    no    |
 
 ## Outputs
 

terraform/install/main.tf

@@ -17,6 +17,7 @@ locals {
     flake = var.flake
     phases = join(",", local.phases)
     nixos_generate_config_path = var.nixos_generate_config_path
+    nixos_facter_path = var.nixos_facter_path
   })
 }
 

terraform/install/run-nixos-anywhere.sh

@@ -28,7 +28,13 @@ else
   args+=("--store-paths" "${input[nixos_partitioner]}" "${input[nixos_system]}")
 fi
 if [[ -n ${input[nixos_generate_config_path]} ]]; then
+  if [[ -n ${input[nixos_facter_path]} ]]; then
+    echo "cannot set both variables 'nixos_generate_config_path' and 'nixos_facter_path'!" >&2
+    exit 1
+  fi
   args+=("--generate-hardware-config" "nixos-generate-config" "${input[nixos_generate_config_path]}")
+elif [[ -n ${input[nixos_facter_path]} ]]; then
+  args+=("--generate-hardware-config" "nixos-facter" "${input[nixos_facter_path]}")
 fi
 args+=(--phases "${input[phases]}")
 if [[ ${input[ssh_private_key]} != null ]]; then

terraform/install/variables.tf

@@ -115,3 +115,9 @@ variable "nixos_generate_config_path" {
   description = "Path to which to write a `hardware-configuration.nix` generated by `nixos-generate-config`."
   default     = ""
 }
+
+variable "nixos_facter_path" {
+  type        = string
+  description = "Path to which to write a `facter.json` generated by `nixos-facter`."
+  default     = ""
+}