flake: allow unfree terraform, treefmt: switch to terraform

dev/treefmt.nix

@@ -6,12 +6,12 @@
 
   programs = {
     deadnix.enable = true;
-    hclfmt.enable = true;
     nixpkgs-fmt.enable = true;
     prettier.enable = true;
     ruff.check = true;
     ruff.format = true;
     statix.enable = true;
+    terraform.enable = true;
   };
 
   programs.mypy = {

flake.nix

@@ -71,6 +71,13 @@
               imports = [ ./dev/treefmt.nix ];
             };
 
+            _module.args.pkgs = import inputs.nixpkgs {
+              inherit system;
+              config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
+                "terraform"
+              ];
+            };
+
             checks =
               let
                 darwinConfigurations = lib.mapAttrs' (name: config: lib.nameValuePair name config.config.system.build.toplevel) ((lib.filterAttrs (_: config: config.pkgs.system == system)) self.darwinConfigurations);

terraform/shell.nix

@@ -1,12 +1,9 @@
 { pkgs, ... }:
-let
-  terraform' = pkgs.terraform.overrideAttrs (_: { meta = { }; });
-in
 {
   devShells = {
     terraform = with pkgs; mkShellNoCC {
       packages = [
-        (terraform'.withPlugins (p: [
+        (terraform.withPlugins (p: [
           p.cloudflare
           p.external
           p.hydra