Move clang dev deps to the nix devshell override

flake.nix

@@ -395,7 +395,7 @@
           stdenvs)));
 
       devShells = let
-        makeShell = pkgs: stdenv: (pkgs.nix.override { inherit stdenv; }).overrideAttrs (_: {
+        makeShell = pkgs: stdenv: (pkgs.nix.override { inherit stdenv; }).overrideAttrs (attrs: {
           installFlags = "sysconfdir=$(out)/etc";
           shellHook = ''
             PATH=$prefix/bin:$PATH
@@ -405,6 +405,9 @@
             # Make bash completion work.
             XDG_DATA_DIRS+=:$out/share
           '';
+          nativeBuildInputs = attrs.nativeBuildInputs or []
+            ++ lib.optional stdenv.cc.isClang pkgs.buildPackages.bear
+            ++ lib.optional (stdenv.cc.isClang && stdenv.hostPlatform == stdenv.buildPlatform) pkgs.buildPackages.clang-tools;
         });
         in
         forAllSystems (system:

package.nix

@@ -5,7 +5,6 @@
 , autoreconfHook
 , aws-sdk-cpp
 , boehmgc
-, buildPackages
 , nlohmann_json
 , bison
 , boost
@@ -208,9 +207,6 @@ in {
     # changelog
     ++ lib.optional (!officialRelease && buildUnreleasedNotes) changelog-d
     ++ lib.optional enableInternalAPIDocs doxygen
-
-    ++ lib.optional stdenv.cc.isClang buildPackages.bear
-    ++ lib.optional (stdenv.cc.isClang && stdenv.hostPlatform == stdenv.buildPlatform) buildPackages.clang-tools
   ;
 
   buildInputs = lib.optionals doBuild [