diff --git a/artiq-board-generated/artiq-board.nix b/artiq-board-generated/artiq-board.nix
index 710c84e..3d59e71 100644
--- a/artiq-board-generated/artiq-board.nix
+++ b/artiq-board-generated/artiq-board.nix
@@ -9,7 +9,7 @@ let
   artiqSrc = import (artiq-fast + "/pkgs/artiq-src.nix") { fetchgit = pkgs.fetchgit; };
   artiqpkgs = import artiq-fast { inherit pkgs; };
   pythonEnv = pkgs.python3.withPackages (ps: with ps; [
-    jinja2 jsonschema numpy artiqpkgs.migen artiqpkgs.microscope artiqpkgs.misoc artiqpkgs.jesd204b artiqpkgs.artiq
+    jinja2 numpy artiqpkgs.migen artiqpkgs.microscope artiqpkgs.misoc artiqpkgs.jesd204b artiqpkgs.artiq
   ]);
   fetchcargo = import (artiq-fast + "/fetchcargo.nix") {
     inherit (pkgs) stdenv cacert git;
diff --git a/artiq-fast/shell-dev.nix b/artiq-fast/shell-dev.nix
index 6ef516a..7fd0519 100644
--- a/artiq-fast/shell-dev.nix
+++ b/artiq-fast/shell-dev.nix
@@ -8,7 +8,7 @@ in
     buildInputs = [
       vivado
       pkgs.gnumake
-      (pkgs.python3.withPackages(ps: (with ps; [ jinja2 jsonschema numpy paramiko ]) ++ (with artiqpkgs; [ migen microscope misoc jesd204b migen-axi artiq ])))
+      (pkgs.python3.withPackages(ps: (with ps; [ jinja2 numpy paramiko ]) ++ (with artiqpkgs; [ migen microscope misoc jesd204b migen-axi artiq ])))
       artiqpkgs.cargo
       artiqpkgs.rustc
       artiqpkgs.binutils-or1k
diff --git a/artiq-full.nix b/artiq-full.nix
index 57b44cf..77eb8d4 100644
--- a/artiq-full.nix
+++ b/artiq-full.nix
@@ -78,10 +78,6 @@ let
 
     let
       artiq-fast = import ${if a6p then "./board-generated" else "."}/fast { inherit pkgs; };
-      ddbDeps = [
-        artiq-fast.artiq
-        (pkgs.python3.withPackages (ps: [ ps.jsonschema ]))
-      ];
 
       kasliVariants = [${builtins.concatStringsSep " " (
         builtins.map (variant: "\"${variant}\"") kasliVariants
@@ -135,7 +131,7 @@ let
           ) {
             "device-db-\''${target}-\''${variant}" = pkgs.stdenv.mkDerivation {
               name = "device-db-\''${target}-\''${variant}";
-              buildInputs = ddbDeps;
+              buildInputs = artiq-fast.artiq;
               phases = [ "buildPhase" ];
               buildPhase = "
                 mkdir \$out
@@ -196,7 +192,7 @@ let
         (system: crates: pkgs.lib.attrsets.nameValuePair ("device-db-" + system)
         (pkgs.stdenv.mkDerivation {
           name = "device-db-\''${system}";
-          buildInputs = ddbDeps;
+          buildInputs = artiq-fast.artiq;
           phases = [ "buildPhase" ];
           buildPhase = "
             mkdir \$out