1 files changed, 32 insertions, 0 deletions
diff --git a/pkgs/development/interpreters/python/hooks/pypa-build-hook-test.nix b/pkgs/development/interpreters/python/hooks/pypa-build-hook-test.nix
new file mode 100644
index 00000000000..4153c21ca4f
--- /dev/null
+++ b/pkgs/development/interpreters/python/hooks/pypa-build-hook-test.nix
@@ -0,0 +1,32 @@
+{ pythonOnBuildForHost, runCommand }: {
+  dont-propagate-conflicting-deps = let
+    # customize a package so that its store paths differs
+    mkConflict = pkg: pkg.overrideAttrs { some_modification = true; };
+    # minimal pyproject.toml for the example project
+    pyprojectToml = builtins.toFile "pyproject.toml" ''
+      [project]
+      name = "my-project"
+      version = "1.0.0"
+    '';
+    # the source of the example project
+    projectSource = runCommand "my-project-source" {} ''
+      mkdir -p $out/src
+      cp ${pyprojectToml} $out/pyproject.toml
+      touch $out/src/__init__.py
+    '';
+    in
+    # this build must never triger conflicts
+    pythonOnBuildForHost.pkgs.buildPythonPackage {
+      pname = "dont-propagate-conflicting-deps";
+      version = "0.0.0";
+      src = projectSource;
+      format = "pyproject";
+      propagatedBuildInputs = [
+        # At least one dependency of `build` should be included here to
+        # keep the test meaningful
+        (mkConflict pythonOnBuildForHost.pkgs.tomli)
+        # setuptools is also needed to build the example project
+        pythonOnBuildForHost.pkgs.setuptools
+      ];
+    };
+}