tcg_rn_imports :: Maybe [LImportDecl Name],
tcg_rn_exports :: Maybe [Located (IE Name)],
tcg_rn_decls :: Maybe (HsGroup Name), -- renamed decls, maybe
tcg_rn_imports :: Maybe [LImportDecl Name],
tcg_rn_exports :: Maybe [Located (IE Name)],
tcg_rn_decls :: Maybe (HsGroup Name), -- renamed decls, maybe