diff --git a/mlir/lib/Bindings/Python/CMakeLists.txt b/mlir/lib/Bindings/Python/CMakeLists.txt
--- a/mlir/lib/Bindings/Python/CMakeLists.txt
+++ b/mlir/lib/Bindings/Python/CMakeLists.txt
@@ -69,7 +69,6 @@
 
 target_link_libraries(MLIRBindingsPythonExtension
   PRIVATE
-  MLIRIR
   MLIRCAPIIR
   MLIRCAPIRegistration
   ${PYEXT_LIBADD}
diff --git a/mlir/lib/Bindings/Python/IRModules.cpp b/mlir/lib/Bindings/Python/IRModules.cpp
--- a/mlir/lib/Bindings/Python/IRModules.cpp
+++ b/mlir/lib/Bindings/Python/IRModules.cpp
@@ -16,13 +16,13 @@
 // Docstrings (trivial, non-duplicated docstrings are included inline).
 //------------------------------------------------------------------------------
 
-static const char ContextParseDocstring[] =
+static const char kContextParseDocstring[] =
     R"(Parses a module's assembly format from a string.
 
 Returns a new MlirModule or raises a ValueError if the parsing fails.
 )";
 
-static const char OperationStrDunderDocstring[] =
+static const char kOperationStrDunderDocstring[] =
     R"(Prints the assembly form of the operation with default options.
 
 If more advanced control over the assembly formatting or I/O options is needed,
@@ -30,7 +30,7 @@
 behavior.
 )";
 
-static const char DumpDocstring[] =
+static const char kDumpDocstring[] =
     R"(Dumps a debug representation of the object to stderr.)";
 
 //------------------------------------------------------------------------------
@@ -47,7 +47,7 @@
   void *getUserData() { return this; }
 
   MlirPrintCallback getCallback() {
-    return +[](const char *part, intptr_t size, void *userData) {
+    return [](const char *part, intptr_t size, void *userData) {
       PyPrintAccumulator *printAccum =
           static_cast<PyPrintAccumulator *>(userData);
       py::str pyPart(part, size); // Decodes as UTF-8 by default.
@@ -90,10 +90,10 @@
   py::class_<PyMlirContext>(m, "MlirContext")
       .def(py::init<>())
       .def("parse", &PyMlirContext::parse, py::keep_alive<0, 1>(),
-           ContextParseDocstring);
+           kContextParseDocstring);
 
   py::class_<PyMlirModule>(m, "MlirModule")
-      .def("dump", &PyMlirModule::dump, DumpDocstring)
+      .def("dump", &PyMlirModule::dump, kDumpDocstring)
       .def(
           "__str__",
           [](PyMlirModule &self) {
@@ -103,5 +103,5 @@
                                printAccum.getUserData());
             return printAccum.join();
           },
-          OperationStrDunderDocstring);
+          kOperationStrDunderDocstring);
 }