diff --git a/pkgs/build-support/build-nim-package.nix b/pkgs/build-support/build-nim-package.nix
index 1e8489212cd6..ade88ea9d3db 100644
--- a/pkgs/build-support/build-nim-package.nix
+++ b/pkgs/build-support/build-nim-package.nix
@@ -15,6 +15,7 @@ let
   baseAttrs = {
     strictDeps = true;
     enableParallelBuilding = true;
+    __structuredAttrs = true;
     doCheck = true;
     configurePhase = ''
       runHook preConfigure
diff --git a/pkgs/by-name/au/auto-editor/package.nix b/pkgs/by-name/au/auto-editor/package.nix
index 2d66a987d949..e260967f09ce 100644
--- a/pkgs/by-name/au/auto-editor/package.nix
+++ b/pkgs/by-name/au/auto-editor/package.nix
@@ -54,6 +54,8 @@ buildNimPackage rec {
     # buildNimPackage hack
     substituteInPlace ae.nimble \
       --replace-fail '"main=auto-editor"' '"main"'
+
+    mv tests/unit.nim tests/tunit.nim # buildNimPackage expects tests to start with t
   '';
 
   nativeCheckInputs = [
@@ -64,7 +66,7 @@ buildNimPackage rec {
   checkPhase = ''
     runHook preCheck
 
-    eval "nim r --nimcache:$NIX_BUILD_TOP/nimcache $nimFlags $src/tests/unit.nim"
+    nim_builder --phase:check
 
     substituteInPlace tests/test.py \
       --replace-fail '"./auto-editor"' "\"$out/bin/main\""
diff --git a/pkgs/by-name/sn/snekim/package.nix b/pkgs/by-name/sn/snekim/package.nix
index 8deefd7515d2..73a375ebc484 100644
--- a/pkgs/by-name/sn/snekim/package.nix
+++ b/pkgs/by-name/sn/snekim/package.nix
@@ -15,7 +15,6 @@ buildNimPackage (finalAttrs: {
     hash = "sha256-Qgvq4CkGvNppYFpITCCifOHtVQYRQJPEK3rTJXQkTvI=";
   };
 
-  strictDeps = true;
   lockFile = ./lock.json;
 
   nimFlags = [ "-d:nimraylib_now_shared" ];