diff --git a/pkgs/development/compilers/llvm/8/lldb/gnu-install-dirs.patch b/pkgs/development/compilers/llvm/8/lldb/gnu-install-dirs.patch
index ffc946816b0d..08b6fae654e5 100644
--- a/pkgs/development/compilers/llvm/8/lldb/gnu-install-dirs.patch
+++ b/pkgs/development/compilers/llvm/8/lldb/gnu-install-dirs.patch
@@ -105,3 +105,16 @@ index a9059dd..d76a47d 100644
    set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX})
 
    set(LLDB_BUILT_STANDALONE 1)
+diff --git a/scripts/CMakeLists.txt b/scripts/CMakeLists.txt
+index 3598247..bd60451 100644
+--- a/scripts/CMakeLists.txt
++++ b/scripts/CMakeLists.txt
+@@ -47,7 +47,7 @@ if(NOT LLDB_BUILD_FRAMEWORK)
+   endif()
+
+   set(SWIG_PYTHON_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${swig_python_subdir})
+-  set(SWIG_INSTALL_DIR lib${LLVM_LIBDIR_SUFFIX})
++  set(SWIG_INSTALL_DIR ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX})
+
+   # Install the LLDB python module
+   install(DIRECTORY ${SWIG_PYTHON_DIR} DESTINATION ${SWIG_INSTALL_DIR})
diff --git a/pkgs/development/compilers/llvm/9/lldb/gnu-install-dirs.patch b/pkgs/development/compilers/llvm/9/lldb/gnu-install-dirs.patch
index 7876220e4d33..6ceb29ced92f 100644
--- a/pkgs/development/compilers/llvm/9/lldb/gnu-install-dirs.patch
+++ b/pkgs/development/compilers/llvm/9/lldb/gnu-install-dirs.patch
@@ -89,3 +89,17 @@ index b726797..1f057ac 100644
  set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX})
 
  set(LLDB_BUILT_STANDALONE 1)
+diff --git a/scripts/CMakeLists.txt b/scripts/CMakeLists.txt
+index 7de7973..b70aecc 100644
+--- a/scripts/CMakeLists.txt
++++ b/scripts/CMakeLists.txt
+@@ -50,7 +50,8 @@ if(NOT LLDB_BUILD_FRAMEWORK)
+     OUTPUT_STRIP_TRAILING_WHITESPACE)
+   execute_process(
+     COMMAND ${PYTHON_EXECUTABLE}
+-        -c "import distutils.sysconfig; print(distutils.sysconfig.get_python_lib(True, False, ''))"
++        -c "import distutils.sysconfig, sys; print(distutils.sysconfig.get_python_lib(True, False, sys.argv[1]))"
++        ${CMAKE_INSTALL_LIBDIR}/../
+     OUTPUT_VARIABLE SWIG_INSTALL_DIR
+     OUTPUT_STRIP_TRAILING_WHITESPACE)
+