[pagmo2] Minimize patch.

ports/pagmo2/disable-werror.patch

@@ -1,22 +1,20 @@
 diff --git a/cmake_modules/yacma/YACMACompilerLinkerSettings.cmake b/cmake_modules/yacma/YACMACompilerLinkerSettings.cmake
-index 7d7aa1b..21613a2 100644
+index 7d7aa1b..81c8bf6 100644
 --- a/cmake_modules/yacma/YACMACompilerLinkerSettings.cmake
 +++ b/cmake_modules/yacma/YACMACompilerLinkerSettings.cmake
-@@ -95,7 +95,7 @@ if(NOT _YACMACompilerLinkerSettingsRun)
+@@ -95,7 +95,6 @@ if(NOT _YACMACompilerLinkerSettingsRun)
          # NOTE: enable unconditionally, as it seems like the CMake
          # machinery for detecting this fails. Perhaps the source code
          # used for checking the flag emits warnings?
 -        list(APPEND _YACMA_CXX_FLAGS_DEBUG "-Werror")
-+        #list(APPEND _YACMA_CXX_FLAGS_DEBUG "-Werror")
          # New warnings in clang 8.
          # NOTE: a few issues with macros here, let's disable for now.
          # _YACMA_CHECK_ENABLE_DEBUG_CXX_FLAG(-Wextra-semi-stmt)
-@@ -180,7 +180,7 @@ if(NOT _YACMACompilerLinkerSettingsRun)
+@@ -180,7 +179,6 @@ if(NOT _YACMACompilerLinkerSettingsRun)
          # Enable higher warning level than usual.
          _YACMA_CHECK_ENABLE_DEBUG_CXX_FLAG(/W4)
          # Treat warnings as errors.
 -        _YACMA_CHECK_ENABLE_DEBUG_CXX_FLAG(/WX)
-+        #_YACMA_CHECK_ENABLE_DEBUG_CXX_FLAG(/WX)
      endif()
 
      # Set the cache variables.

versions/p-/pagmo2.json

@@ -1,7 +1,7 @@
 {
   "versions": [
     {
-      "git-tree": "bfe0d03585b15c5b5d21f60bb3e8ef89f4fe23ee",
+      "git-tree": "fa28deef736ea34bcc41143a960e8be97653ba1d",
       "version": "2.18.0",
       "port-version": 0
     },