python3Packages.mkPythonEditablePackage: init

pkgs/development/interpreters/python/tests.nix

@@ -122,6 +122,43 @@ let
     }
   );
 
+  # Test editable package support
+  editableTests = let
+    testPython = python.override {
+      self = testPython;
+      packageOverrides = pyfinal: pyprev: {
+        # An editable package with a script that loads our mutable location
+        my-editable = pyfinal.mkPythonEditablePackage {
+          pname = "my-editable";
+          version = "0.1.0";
+          root = "$NIX_BUILD_TOP/src"; # Use environment variable expansion at runtime
+          # Inject a script
+          scripts = {
+            my-script = "my_editable.main:main";
+          };
+        };
+      };
+    };
+
+
+  in {
+    editable-script = runCommand "editable-test" {
+      nativeBuildInputs = [ (testPython.withPackages (ps: [ ps.my-editable ])) ];
+    } ''
+      mkdir -p src/my_editable
+
+      cat > src/my_editable/main.py << EOF
+      def main():
+        print("hello mutable")
+      EOF
+
+      test "$(my-script)" == "hello mutable"
+      test "$(python -c 'import sys; print(sys.path[1])')" == "$NIX_BUILD_TOP/src"
+
+      touch $out
+    '';
+  };
+
   # Tests to ensure overriding works as expected.
   overrideTests = let
     extension = self: super: {
@@ -192,4 +229,4 @@ let
       '';
     };
 
-in lib.optionalAttrs (stdenv.hostPlatform == stdenv.buildPlatform ) (environmentTests // integrationTests // overrideTests // condaTests)
+in lib.optionalAttrs (stdenv.hostPlatform == stdenv.buildPlatform ) (environmentTests // integrationTests // overrideTests // condaTests // editableTests)