diff --git a/ops/machines/build01/default.nix b/ops/machines/build01/default.nix
index 812135862..a262f31c7 100644
--- a/ops/machines/build01/default.nix
+++ b/ops/machines/build01/default.nix
@@ -12,6 +12,8 @@ in
     (depot.third_party.agenix.src + "/modules/age.nix")
   ];
 
+  nixpkgs.hostPlatform = "x86_64-linux";
+
   # Machine model taken from project Floral.
   boot.isContainer = true;
 
diff --git a/ops/machines/meta01/default.nix b/ops/machines/meta01/default.nix
index 31ba1a1bc..c449262ad 100644
--- a/ops/machines/meta01/default.nix
+++ b/ops/machines/meta01/default.nix
@@ -25,6 +25,8 @@ in
     (depot.third_party.disko.src + "/module.nix")
   ];
 
+  nixpkgs.hostPlatform = "x86_64-linux";
+
   infra.hardware.hetzner-cloud = {
     enable = true;
     ipv6 = "2a01:4f8:c013:4a58::1/64";
diff --git a/ops/machines/public01/default.nix b/ops/machines/public01/default.nix
index 9b7a91612..818eaca4c 100644
--- a/ops/machines/public01/default.nix
+++ b/ops/machines/public01/default.nix
@@ -27,6 +27,8 @@ in
     (depot.third_party.disko.src + "/module.nix")
   ];
 
+  nixpkgs.hostPlatform = "x86_64-linux";
+
   infra.hardware.hetzner-cloud = {
     enable = true;
     ipv6 = "2a01:4f8:c013:3e62::1/64";
diff --git a/ops/nixos.nix b/ops/nixos.nix
index b98c32dd8..89c7c1037 100644
--- a/ops/nixos.nix
+++ b/ops/nixos.nix
@@ -1,12 +1,10 @@
 # Helper functions for instantiating depot-compatible NixOS machines.
 { depot, lib, pkgs, ... }@args:
 
-let inherit (lib) findFirst isAttrs;
+let inherit (lib) findFirst;
 in rec {
   # This provides our standard set of arguments to all NixOS modules.
   baseModule = { ... }: {
-    # Ensure that pkgs == third_party.nix
-    nixpkgs.pkgs = depot.third_party.nixpkgs;
     nix.nixPath =
       let
         # Due to nixpkgsBisectPath, pkgs.path is not always in the nix store
diff --git a/users/flokli/nixos/archivist-ec2/configuration.nix b/users/flokli/nixos/archivist-ec2/configuration.nix
index b43cff837..b4d538f4a 100644
--- a/users/flokli/nixos/archivist-ec2/configuration.nix
+++ b/users/flokli/nixos/archivist-ec2/configuration.nix
@@ -6,6 +6,8 @@
     ../profiles/archivist.nix
   ];
 
+  nixpkgs.hostPlatform = "x86_64-linux";
+
   systemd.timers.parse-bucket-logs = {
     wantedBy = [ "multi-user.target" ];
     timerConfig.OnCalendar = "*-*-* 03:00:00 UTC";