youcompleteme: fix compilation
1) Replace --system-libclang with an explicit setting for the path to nix libclang 3.9. Otherwise it will find system's libclang on darwin. 2) Remove clang/llvm from build inputs. This prevents ycm itself from being compiled by clang 3.9. stdenv's standard compiler (gcc or clang 3.7) will suffice. 3) Enable C++11 again as #16212 is caused by incopatibility between clang 3.9 and libc++ 3.7, but we don't compile YCM with clang 3.9, so this is not needed anymore.
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@@ -1,14 +0,0 @@
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--- ./third_party/ycmd/cpp/CMakeLists.txt
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+++ ./third_party/ycmd/cpp/CMakeLists.txt
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@@ -121,8 +121,8 @@
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set( CPP11_AVAILABLE true )
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endif()
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elseif( COMPILER_IS_CLANG )
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- set( CPP11_AVAILABLE true )
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- set( CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LANGUAGE_STANDARD "c++11" )
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+ #set( CPP11_AVAILABLE true )
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+ # set( CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LANGUAGE_STANDARD "c++11" )
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set( CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libc++" )
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endif()
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