1 files changed, 9 insertions, 3 deletions
diff --git a/Biz/Bild/Builder.nix b/Biz/Bild/Builder.nix
index 8f42733..f9eb31d 100644
--- a/Biz/Bild/Builder.nix
+++ b/Biz/Bild/Builder.nix
@@ -92,16 +92,22 @@ let
 
       python = bild.python.buildPythonApplication rec {
         inherit name src BIZ_ROOT;
-        propagatedBuildInputs = [ (bild.python.pythonWith (_: langdeps_)) ] ++ sysdeps_;
+        propagatedBuildInputs = langdeps_ ++ sysdeps_;
         buildInputs = sysdeps_;
-        checkInputs = [(bild.python.pythonWith (p: with p; [black mypy])) ruff];
+        nativeCheckInputs = [ black mypy ruff ];
         checkPhase = ''
           check() {
             $@ || { echo "fail:  $name:  $3"; exit 1; }
           }
+          cp ${../../pyproject.toml} ./pyproject.toml
           check python -m black --quiet --exclude 'setup\.py$' --check .
           check ${ruff}/bin/ruff check .
-          check python -m mypy --strict --no-error-summary --exclude 'setup\.py$' .
+          touch ./py.typed
+          check python -m mypy \
+            --explicit-package-bases \
+            --no-error-summary \
+            --exclude 'setup\.py$' \
+            .
           check python -m ${mainModule} test
         '';
         preBuild = ''