add nixos-factor

dev/treefmt.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ lib, pkgs, ... }:
 {
   # Used to find the project root
   projectRootFile = ".git/config";
@@ -43,6 +43,18 @@
       priority = 9; # last
     };
 
+    json-sort-compact = {
+      command = pkgs.writeShellScriptBin "json-sort-compact" ''
+        for file in "$@"; do
+          ${lib.getExe pkgs.jq} \
+            'walk(if type == "array" then sort else . end)' \
+            --compact-output --sort-keys < "$file" |
+            ${lib.getExe' pkgs.moreutils "sponge"} "$file"
+        done
+      '';
+      includes = [ "*report.json" ];
+    };
+
     shellcheck.priority = 1;
     shfmt.priority = 2;
 
@@ -62,6 +74,7 @@
         "never"
       ];
       excludes = [
+        "*report.json"
         "config.yaml"
         "*secrets.yaml"
         "modules/secrets/*.yaml"

modules/nixos/common/default.nix

@@ -10,6 +10,7 @@
     ../../shared/nix-daemon.nix
     ./armv7l.nix
     ./builder.nix
+    ./facter.nix
     ./security.nix
     ./sops-nix.nix
     ./telegraf.nix

modules/nixos/common/facter.nix

@@ -0,0 +1,16 @@
+{
+  config,
+  inputs,
+  lib,
+  ...
+}:
+let
+  reportPath = "${inputs.self}/hosts/${config.networking.hostName}/report.json";
+in
+{
+  imports = [ inputs.nixos-facter-modules.nixosModules.facter ];
+
+  config = lib.mkIf (builtins.pathExists reportPath) {
+    facter = { inherit reportPath; };
+  };
+}

tasks.py

@@ -49,6 +49,26 @@ def deploy(h: DeployHost) -> None:
     g.run_function(deploy)
 
 
+@task
+def facter_report(c: Any, hosts: str = "") -> None:
+    """
+    Generate facter report
+    """
+    g = DeployGroup(get_hosts(hosts))
+
+    def facter(h: DeployHost) -> None:
+        res = h.run(
+            ["sudo", "nix", "run", "nixpkgs#nixos-facter"],
+            stdout=subprocess.PIPE,
+        )
+        hostname = h.host.replace(".nix-community.org", "")
+        path = f"{ROOT}/hosts/{hostname}/report.json"
+        with open(path, "w") as f:
+            f.write(res.stdout)
+
+    g.run_function(facter)
+
+
 @task
 def sotp(c: Any, acct: str) -> None:
     """