/usr/include/GNUstep/ is in librenaissance0-dev 0.9.0-4build4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/GNUstep/Renaissance/
/usr/include/GNUstep/Renaissance/GNUstep.h
/usr/include/GNUstep/Renaissance/GSAutoLayoutBox.h
/usr/include/GNUstep/Renaissance/GSAutoLayoutDefaults.h
/usr/include/GNUstep/Renaissance/GSAutoLayoutGrid.h
/usr/include/GNUstep/Renaissance/GSAutoLayoutHBox.h
/usr/include/GNUstep/Renaissance/GSAutoLayoutHSpace.h
/usr/include/GNUstep/Renaissance/GSAutoLayoutManager.h
/usr/include/GNUstep/Renaissance/GSAutoLayoutManagerPrivate.h
/usr/include/GNUstep/Renaissance/GSAutoLayoutProportionalManager.h
/usr/include/GNUstep/Renaissance/GSAutoLayoutSpace.h
/usr/include/GNUstep/Renaissance/GSAutoLayoutStandardManager.h
/usr/include/GNUstep/Renaissance/GSAutoLayoutVBox.h
/usr/include/GNUstep/Renaissance/GSAutoLayoutVSpace.h
/usr/include/GNUstep/Renaissance/GSMarkupApplicationMain.h
/usr/include/GNUstep/Renaissance/GSMarkupAwaker.h
/usr/include/GNUstep/Renaissance/GSMarkupBundleAdditions.h
/usr/include/GNUstep/Renaissance/GSMarkupCoder.h
/usr/include/GNUstep/Renaissance/GSMarkupCoding.h
/usr/include/GNUstep/Renaissance/GSMarkupConnector.h
/usr/include/GNUstep/Renaissance/GSMarkupDecoder.h
/usr/include/GNUstep/Renaissance/GSMarkupDecoderBackend.h
/usr/include/GNUstep/Renaissance/GSMarkupDocument.h
/usr/include/GNUstep/Renaissance/GSMarkupTagBox.h
/usr/include/GNUstep/Renaissance/GSMarkupTagBrowser.h
/usr/include/GNUstep/Renaissance/GSMarkupTagButton.h
/usr/include/GNUstep/Renaissance/GSMarkupTagColorWell.h
/usr/include/GNUstep/Renaissance/GSMarkupTagControl.h
/usr/include/GNUstep/Renaissance/GSMarkupTagForm.h
/usr/include/GNUstep/Renaissance/GSMarkupTagFormItem.h
/usr/include/GNUstep/Renaissance/GSMarkupTagGrid.h
/usr/include/GNUstep/Renaissance/GSMarkupTagGridRow.h
/usr/include/GNUstep/Renaissance/GSMarkupTagHbox.h
/usr/include/GNUstep/Renaissance/GSMarkupTagHspace.h
/usr/include/GNUstep/Renaissance/GSMarkupTagImage.h
/usr/include/GNUstep/Renaissance/GSMarkupTagInstance.h
/usr/include/GNUstep/Renaissance/GSMarkupTagLabel.h
/usr/include/GNUstep/Renaissance/GSMarkupTagMatrix.h
/usr/include/GNUstep/Renaissance/GSMarkupTagMatrixCell.h
/usr/include/GNUstep/Renaissance/GSMarkupTagMatrixRow.h
/usr/include/GNUstep/Renaissance/GSMarkupTagMenu.h
/usr/include/GNUstep/Renaissance/GSMarkupTagMenuItem.h
/usr/include/GNUstep/Renaissance/GSMarkupTagMenuSeparator.h
/usr/include/GNUstep/Renaissance/GSMarkupTagObject.h
/usr/include/GNUstep/Renaissance/GSMarkupTagObjectAdditions.h
/usr/include/GNUstep/Renaissance/GSMarkupTagOutlineView.h
/usr/include/GNUstep/Renaissance/GSMarkupTagPanel.h
/usr/include/GNUstep/Renaissance/GSMarkupTagPopUpButton.h
/usr/include/GNUstep/Renaissance/GSMarkupTagPopUpButtonItem.h
/usr/include/GNUstep/Renaissance/GSMarkupTagScrollView.h
/usr/include/GNUstep/Renaissance/GSMarkupTagSecureTextField.h
/usr/include/GNUstep/Renaissance/GSMarkupTagSpace.h
/usr/include/GNUstep/Renaissance/GSMarkupTagSplitView.h
/usr/include/GNUstep/Renaissance/GSMarkupTagTableColumn.h
/usr/include/GNUstep/Renaissance/GSMarkupTagTableView.h
/usr/include/GNUstep/Renaissance/GSMarkupTagTextField.h
/usr/include/GNUstep/Renaissance/GSMarkupTagTextView.h
/usr/include/GNUstep/Renaissance/GSMarkupTagVbox.h
/usr/include/GNUstep/Renaissance/GSMarkupTagView.h
/usr/include/GNUstep/Renaissance/GSMarkupTagWindow.h
/usr/include/GNUstep/Renaissance/GSMarkupWindowController.h
/usr/include/GNUstep/Renaissance/Markup.h
/usr/include/GNUstep/Renaissance/NSViewSize.h
/usr/include/GNUstep/Renaissance/Renaissance.h