Merge pull request 'Integrate nixos-facter into UI' (#1963) from hsjobeki/clan-core:hsjobeki-main into main

Reviewed-on: https://git.clan.lol/clan/clan-core/pulls/1963

flake.lock

@@ -1,5 +1,28 @@
 {
   "nodes": {
+    "blueprint": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "systems": [
+          "systems"
+        ]
+      },
+      "locked": {
+        "lastModified": 1724053269,
+        "narHash": "sha256-DinmPyxmUSLjBUYMe3eK0GKykwe33vWbVTmp7++P4Ng=",
+        "owner": "numtide",
+        "repo": "blueprint",
+        "rev": "766302be9063650ca6578e5ba09cc4260b0da29c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "blueprint",
+        "type": "github"
+      }
+    },
     "disko": {
       "inputs": {
         "nixpkgs": [
@@ -40,6 +63,35 @@
         "type": "github"
       }
     },
+    "nixos-facter-modules": {
+      "inputs": {
+        "blueprint": [
+          "blueprint"
+        ],
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "systems": [
+          "systems"
+        ],
+        "treefmt-nix": [
+          "treefmt-nix"
+        ]
+      },
+      "locked": {
+        "lastModified": 1724320449,
+        "narHash": "sha256-0hB5P75tIwPS9lNI3nYxEorpcFtuQUJGmGHGIEgWksY=",
+        "owner": "numtide",
+        "repo": "nixos-facter-modules",
+        "rev": "e00d789870e72baabb79d19afcc645428c3c6980",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "nixos-facter-modules",
+        "type": "github"
+      }
+    },
     "nixos-images": {
       "inputs": {
         "nixos-stable": [],
@@ -79,8 +131,10 @@
     },
     "root": {
       "inputs": {
+        "blueprint": "blueprint",
         "disko": "disko",
         "flake-parts": "flake-parts",
+        "nixos-facter-modules": "nixos-facter-modules",
         "nixos-images": "nixos-images",
         "nixpkgs": "nixpkgs",
         "sops-nix": "sops-nix",

flake.nix

@@ -17,6 +17,17 @@
     systems.url = "github:nix-systems/default";
     treefmt-nix.url = "github:numtide/treefmt-nix";
     treefmt-nix.inputs.nixpkgs.follows = "nixpkgs";
+
+    nixos-facter-modules.url = "github:numtide/nixos-facter-modules";
+    nixos-facter-modules.inputs.nixpkgs.follows = "nixpkgs";
+    nixos-facter-modules.inputs.systems.follows = "systems";
+    nixos-facter-modules.inputs.blueprint.follows = "blueprint";
+    nixos-facter-modules.inputs.treefmt-nix.follows = "treefmt-nix";
+    # Pinned input for nixos-facter-modules
+    # Allows downstream flakes to .follow override the input
+    blueprint.url = "github:numtide/blueprint";
+    blueprint.inputs.nixpkgs.follows = "nixpkgs";
+    blueprint.inputs.systems.follows = "systems";
   };
 
   outputs =

lib/build-clan/module.nix

@@ -64,14 +64,36 @@ let
       modules =
         let
           settings = machineSettings name;
+          facterJson = "${directory}/machines/${name}/facter.json";
+          hwConfig = "${directory}/machines/${name}/hardware-configuration.nix";
+
+          facterModules = lib.optionals (builtins.pathExists facterJson) [
+            clan-core.inputs.nixos-facter-modules.nixosModules.facter
+            { config.facter.reportPath = facterJson; }
+          ];
         in
         (machineImports settings)
+        ++ facterModules
         ++ [
           {
             # Autoinclude configuration.nix and hardware-configuration.nix
             imports = builtins.filter builtins.pathExists [
               "${directory}/machines/${name}/configuration.nix"
-              "${directory}/machines/${name}/hardware-configuration.nix"
+              hwConfig
+            ];
+            config.warnings =
+              lib.optionals
+                (builtins.all builtins.pathExists [
+                  hwConfig
+                  facterJson
+                ])
+                [
+                  ''
+                    Duplicate hardware facts: '${hwConfig}' and '${facterJson}' exist.
+                    Using both is not recommended.
+
+                    It is recommended to use the hardware facts from '${facterJson}', please remove '${hwConfig}'.
+                  ''
                 ];
           }
           settings

pkgs/clan-cli/clan_cli/machines/hardware.py

@@ -104,6 +104,9 @@ def generate_machine_hardware_info(
     password: str | None = None,
     keyfile: str | None = None,
     force: bool | None = False,
+    report_type: Literal[
+        "nixos-generate-config", "nixos-facter"
+    ] = "nixos-generate-config",
 ) -> HardwareReport:
     """
     Generate hardware information for a machine
@@ -114,6 +117,14 @@ def generate_machine_hardware_info(
     if hostname is not None:
         machine.target_host_address = hostname
 
+    nixos_generate_cmd = [
+        "nixos-generate-config",  # Filesystems are managed by disko
+        "--no-filesystems",
+        "--show-hardware-config",
+    ]
+
+    nixos_facter_cmd = ["nix", "run", "--refresh", "github:numtide/nixos-facter"]
+
     host = machine.target_host
     target_host = f"{host.user or 'root'}@{host.host}"
     cmd = nix_shell(
@@ -137,10 +148,11 @@ def generate_machine_hardware_info(
                 else []
             ),
             target_host,
-            "nixos-generate-config",
-            # Filesystems are managed by disko
-            "--no-filesystems",
-            "--show-hardware-config",
+            *(
+                nixos_generate_cmd
+                if report_type == "nixos-generate-config"
+                else nixos_facter_cmd
+            ),
         ],
     )
     out = run(cmd)
@@ -149,7 +161,9 @@ def generate_machine_hardware_info(
         log.error(out)
         raise ClanError(f"Failed to inspect {machine_name}. Address: {hostname}")
 
-    hw_file = Path(f"{clan_dir}/machines/{machine_name}/hardware-configuration.nix")
+    hw_file = Path(
+        f"{clan_dir}/machines/{machine_name}/{hw_nix_file if report_type == 'nixos-generate-config' else facter_file}"
+    )
     hw_file.parent.mkdir(parents=True, exist_ok=True)
 
     # Check if the hardware-configuration.nix file is a template
@@ -167,7 +181,7 @@ def generate_machine_hardware_info(
         # Backup the existing file
         backup_file = hw_file.with_suffix(".bak")
         hw_file.replace(backup_file)
-        print(f"Backed up existing hardware-configuration.nix to {backup_file}")
+        print(f"Backed up existing {hw_file} to {backup_file}")
 
     with open(hw_file, "w") as f:
         f.write(out.stdout)
@@ -197,7 +211,7 @@ def generate_machine_hardware_info(
             location=f"{__name__} {hw_file}",
         )
 
-    return HardwareReport("nixos-generate-config")
+    return HardwareReport(report_type)
 
 
 @dataclass

pkgs/installer/flake-module.nix

@@ -8,6 +8,8 @@ let
       imports = [
         ./iwd.nix
         self.nixosModules.installer
+        # Allow to download pre-build binaries from our nix caches
+        self.clanModules.trusted-nix-caches
       ];
 
       system.stateVersion = config.system.nixos.version;

pkgs/webview-ui/app/src/routes/machines/[name]/view.tsx

@@ -77,7 +77,7 @@ const InstallMachine = (props: InstallMachineProps) => {
           machine_name: props.name,
         });
         if (result.status === "error") throw new Error("Failed to fetch data");
-        return result.data || null;
+        return result.data?.file === "nixos-facter" || null;
       }
       return null;
     },
@@ -152,6 +152,7 @@ const InstallMachine = (props: InstallMachineProps) => {
       machine_name: props.name,
       keyfile: props.sshKey?.name,
       hostname: props.targetHost,
+      report_type: "nixos-facter",
     });
     toast.dismiss(loading_toast);
     hwInfoQuery.refetch();