app-editors/neovim: fix build on Darwin

* We don't need no damned automagic here

Suggested-by: Sam James <[email protected]>
Signed-off-by: Aaron Bauman <[email protected]>

app-editors/neovim/files/neovim-0.4.4-cmake-darwin.patch

@@ -0,0 +1,61 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 07928e3..08881ee 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -58,23 +58,6 @@ endif()
+ # used for check_c_compiler_flag
+ include(CheckCCompilerFlag)
+
+-if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+-  # CMake tries to treat /sw and /opt/local as extension of the system path, but
+-  # that doesn't really work out very well.  Once you have a dependency that
+-  # resides there and have to add it as an include directory, then any other
+-  # dependency that could be satisfied from there must be--otherwise you can end
+-  # up with conflicting versions.  So, let's make them more of a priority having
+-  # them be included as one of the first places to look for dependencies.
+-  list(APPEND CMAKE_PREFIX_PATH /sw /opt/local)
+-
+-  # Work around some old, broken detection by CMake for knowing when to use the
+-  # isystem flag.  Apple's compilers have supported this for quite some time
+-  # now.
+-  if(CMAKE_COMPILER_IS_GNUCC)
+-    set(CMAKE_INCLUDE_SYSTEM_FLAG_C "-isystem ")
+-  endif()
+-endif()
+-
+ if(WIN32 OR CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+   # Enable fixing case-insensitive filenames for Windows and Mac.
+   set(USE_FNAME_CASE TRUE)
+diff --git a/src/nvim/CMakeLists.txt b/src/nvim/CMakeLists.txt
+index aa81008..0570dc7 100644
+--- a/src/nvim/CMakeLists.txt
++++ b/src/nvim/CMakeLists.txt
+@@ -192,10 +192,6 @@ get_directory_property(gen_includes INCLUDE_DIRECTORIES)
+ foreach(gen_include ${gen_includes} ${LUA_PREFERRED_INCLUDE_DIRS})
+   list(APPEND gen_cflags "-I${gen_include}")
+ endforeach()
+-if(CMAKE_SYSTEM_NAME STREQUAL "Darwin" AND CMAKE_OSX_SYSROOT)
+-  list(APPEND gen_cflags "-isysroot")
+-  list(APPEND gen_cflags "${CMAKE_OSX_SYSROOT}")
+-endif()
+ string(TOUPPER "${CMAKE_BUILD_TYPE}" build_type)
+ separate_arguments(C_FLAGS_ARRAY UNIX_COMMAND ${CMAKE_C_FLAGS})
+ separate_arguments(C_FLAGS_${build_type}_ARRAY UNIX_COMMAND ${CMAKE_C_FLAGS_${build_type}})
+diff --git a/third-party/CMakeLists.txt b/third-party/CMakeLists.txt
+index edd5882..e503434 100644
+--- a/third-party/CMakeLists.txt
++++ b/third-party/CMakeLists.txt
+@@ -105,13 +105,6 @@ if(CMAKE_CXX_COMPILER)
+   set(DEPS_CXX_COMPILER "${CMAKE_CXX_COMPILER}")
+ endif()
+
+-if(CMAKE_OSX_SYSROOT)
+-  set(DEPS_C_COMPILER "${DEPS_C_COMPILER} -isysroot${CMAKE_OSX_SYSROOT}")
+-  if(DEPS_CXX_COMPILER)
+-    set(DEPS_CXX_COMPILER "${DEPS_CXX_COMPILER} -isysroot${CMAKE_OSX_SYSROOT}")
+-  endif()
+-endif()
+-
+ # Cross compiling: use these for dependencies built for the
+ # HOST system, when not crosscompiling these should be the
+ # same as DEPS_*. Except when targeting Unix in which case

app-editors/neovim/neovim-0.4.4-r100.ebuild

@@ -63,6 +63,7 @@ RDEPEND="
 PATCHES=(
 	"${FILESDIR}/${PN}-0.4.4-cmake_lua_version.patch"
 	"${FILESDIR}/${PN}-0.4.4-cmake-release-type.patch"
+	"${FILESDIR}/${PN}-0.4.4-cmake-darwin.patch"
 )
 
 src_prepare() {