diff --git a/share/clair.modulefile.in b/share/clair.modulefile.in
index e7d02c9..b5a800f 100644
--- a/share/clair.modulefile.in
+++ b/share/clair.modulefile.in
@@ -27,8 +27,8 @@ setenv          CPP2PY_ROOT         $root
 setenv          CPP2PY_VERSION      $version
 setenv          CPP2PY_GIT_HASH     $git_hash
 
-prepend-path    PATH                $root/bin
-prepend-path    CPLUS_INCLUDE_PATH  $root/include
-prepend-path    LIBRARY_PATH        $root/lib
+prepend-path    PATH                @CMAKE_INSTALL_FULL_BINDIR@
+prepend-path    CPLUS_INCLUDE_PATH  @CMAKE_INSTALL_FULL_INCLUDEDIR@
+prepend-path    LIBRARY_PATH        @CMAKE_INSTALL_FULL_LIBDIR@
 prepend-path    PYTHONPATH          $root/@PYTHON_LIB_DEST_ROOT@
-prepend-path    CMAKE_PREFIX_PATH   $root/lib/cmake/cpp2py
+prepend-path    CMAKE_PREFIX_PATH   @CMAKE_INSTALL_FULL_LIBDIR@/cmake/clair
diff --git a/share/clairvars.sh.in b/share/clairvars.sh.in
index 9af26a5..4c98821 100644
--- a/share/clairvars.sh.in
+++ b/share/clairvars.sh.in
@@ -1,9 +1,9 @@
 # Source this in your environment.
 
-export CPLUS_INCLUDE_PATH=@CMAKE_INSTALL_PREFIX@/include:$CPLUS_INCLUDE_PATH
-export PATH=@CMAKE_INSTALL_PREFIX@/bin:$PATH
+export CPLUS_INCLUDE_PATH=@CMAKE_INSTALL_FULL_INCLUDEDIR@:$CPLUS_INCLUDE_PATH
+export PATH=@CMAKE_INSTALL_FULL_BINDIR@:$PATH
 export LIBRARY_PATH=@CMAKE_INSTALL_FULL_LIBDIR@:$LIBRARY_PATH
 export LD_LIBRARY_PATH=@CMAKE_INSTALL_FULL_LIBDIR@:$LD_LIBRARY_PATH
 export DYLD_LIBRARY_PATH=@CMAKE_INSTALL_FULL_LIBDIR@:$DYLD_LIBRARY_PATH
 export PYTHONPATH=@CMAKE_INSTALL_PREFIX@/@PYTHON_LIB_DEST_ROOT@:$PYTHONPATH
-export CMAKE_PREFIX_PATH=@CMAKE_INSTALL_PREFIX@:$CMAKE_PREFIX_PATH
+export CMAKE_PREFIX_PATH=@CMAKE_INSTALL_FULL_LIBDIR@/cmake/clair:$CMAKE_PREFIX_PATH
diff --git a/share/cmake/CMakeLists.txt b/share/cmake/CMakeLists.txt
index a3aeb95..dbde768 100644
--- a/share/cmake/CMakeLists.txt
+++ b/share/cmake/CMakeLists.txt
@@ -7,4 +7,4 @@ install(
   DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/clair
 )
 
-install(EXPORT clair-targets NAMESPACE c2py:: DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/clair)
+install(EXPORT clair-targets NAMESPACE clair:: DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/clair)
diff --git a/share/cmake/clair-config.cmake.in b/share/cmake/clair-config.cmake.in
index 0d46108..0823b8f 100644
--- a/share/cmake/clair-config.cmake.in
+++ b/share/cmake/clair-config.cmake.in
@@ -12,7 +12,7 @@ set(CLAIR_LLVM_VERSION @CMAKE_CXX_COMPILER_VERSION@)
 set(@PROJECT_NAME@_ROOT @CMAKE_INSTALL_PREFIX@ CACHE STRING "@PROJECT_NAME@ root directory")
 
 # Include the exported targets of this project
-include(@CMAKE_INSTALL_PREFIX@/lib/cmake/@PROJECT_NAME@/@PROJECT_NAME@-targets.cmake)
+include(@CMAKE_INSTALL_FULL_LIBDIR@/cmake/@PROJECT_NAME@/@PROJECT_NAME@-targets.cmake)
 
 if (NOT ${CMAKE_CXX_COMPILER_ID} STREQUAL "@CMAKE_CXX_COMPILER_ID@")
  MESSAGE(FATAL_ERROR "Clair plugins are only usable with clang")
@@ -26,11 +26,8 @@ message(STATUS "Found @PROJECT_NAME@-config.cmake with version @PROJECT_VERSION@
 
  # Mac specific
  if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
-  set(CMAKE_INSTALL_NAME_DIR "@CMAKE_INSTALL_PREFIX@/lib")
+  set(CMAKE_INSTALL_NAME_DIR "@CMAKE_INSTALL_FULL_LIBDIR@")
   set(CMAKE_MACOSX_RPATH 1) # new for cmake 3.x
  endif()
 
- # include the exported targets of this project
- include(@CMAKE_INSTALL_PREFIX@/lib/cmake/clair/clair-targets.cmake)
-
 endif()
diff --git a/src/plugins/c2py/CMakeLists.txt b/src/plugins/c2py/CMakeLists.txt
index b3a84a5..75914a9 100644
--- a/src/plugins/c2py/CMakeLists.txt
+++ b/src/plugins/c2py/CMakeLists.txt
@@ -33,7 +33,7 @@ add_dependencies(c2py_plugin clair_c2py)
 target_compile_options(c2py_plugin
   INTERFACE
   $<BUILD_INTERFACE:-fplugin=${CMAKE_CURRENT_BINARY_DIR}/clair_c2py${CMAKE_SHARED_LIBRARY_SUFFIX}>
-  $<INSTALL_INTERFACE:-fplugin=${CMAKE_INSTALL_LIBDIR}/clair_c2py${CMAKE_SHARED_LIBRARY_SUFFIX}>
+  $<INSTALL_INTERFACE:-fplugin=${CMAKE_INSTALL_FULL_LIBDIR}/clair_c2py${CMAKE_SHARED_LIBRARY_SUFFIX}>
 )
 target_compile_definitions(c2py_plugin INTERFACE C2PY_INCLUDED)
 add_library(clair::c2py_plugin ALIAS c2py_plugin)
diff --git a/src/plugins/c2py/matchers.cpp b/src/plugins/c2py/matchers.cpp
index dfe4197..45ce0e0 100644
--- a/src/plugins/c2py/matchers.cpp
+++ b/src/plugins/c2py/matchers.cpp
@@ -176,7 +176,7 @@ namespace matchers {
 #endif
 
     if (auto *s = llvm::dyn_cast_or_null<clang::ClassTemplateSpecializationDecl>(cls)) {
-      if (!s->getTypeAsWritten()) return;
+      if (!s->isExplicitInstantiationOrSpecialization()) return;
     }
 
     // Reject the declaration of the template itself.