diff --git a/morph/grid/local/grid.nix b/morph/grid/local/grid.nix
index f1e1980532177385c926eb6c3903b67724ff7175..088d9e8c79422b82d638a42aeab5da1fcf14f536 100644
--- a/morph/grid/local/grid.nix
+++ b/morph/grid/local/grid.nix
@@ -1,8 +1,6 @@
 let
-  pkgs = import <nixpkgs> { };
-
   gridlib = import ../../lib;
-  grid-config = pkgs.lib.trivial.importJSON ./config.json;
+  grid-config = builtins.fromJSON (builtins.readFile ./config.json);
 
   ssh-users = let
     ssh-users-file = ./public-keys/users.nix;
diff --git a/morph/grid/production/grid.nix b/morph/grid/production/grid.nix
index 4f68b5e80b1e79a879e923e177ea901285c6b521..06fe07f8277bf81e26e2f9f735783614c117a7b3 100644
--- a/morph/grid/production/grid.nix
+++ b/morph/grid/production/grid.nix
@@ -1,9 +1,7 @@
 # See morph/grid/local/grid.nix for additional commentary.
 let
-  pkgs = import <nixpkgs> { };
-
   gridlib = import ../../lib;
-  grid-config = pkgs.lib.trivial.importJSON ./config.json;
+  grid-config = builtins.fromJSON (builtins.readFile ./config.json);
 
   # Module with per-grid configuration
   grid-module = {config, ...}: {
diff --git a/morph/grid/testing/grid.nix b/morph/grid/testing/grid.nix
index bc6d1abed0469c4a62276ee855410bfc15439a01..c033da1279fa44800e994dc07df3f5febc97d60d 100644
--- a/morph/grid/testing/grid.nix
+++ b/morph/grid/testing/grid.nix
@@ -1,9 +1,7 @@
 # See morph/grid/local/grid.nix for additional commentary.
 let
-  pkgs = import <nixpkgs> { };
-
   gridlib = import ../../lib;
-  grid-config = pkgs.lib.trivial.importJSON ./config.json;
+  grid-config = builtins.fromJSON (builtins.readFile ./config.json);
 
   # Module with per-grid configuration
   grid-module = {config, ...}: {