gistfile1.txt

brew install --HEAD neovim
==> Installing neovim from neovim/neovim
==> Cloning https://github.com/neovim/neovim.git
Cloning into '/Library/Caches/Homebrew/neovim--git'...
remote: Counting objects: 2040, done.
remote: Compressing objects: 100% (1894/1894), done.
remote: Total 2040 (delta 160), reused 1422 (delta 127), pack-reused 0
Receiving objects: 100% (2040/2040), 7.45 MiB | 902.00 KiB/s, done.
Resolving deltas: 100% (160/160), done.
Checking connectivity... done.
==> Checking out branch master
==> Downloading https://github.com/libuv/libuv/archive/v1.8.0.tar.gz
==> Downloading from https://codeload.github.com/libuv/libuv/tar.gz/v1.8.0
######################################################################## 100.0%
==> Downloading https://github.com/msgpack/msgpack-c/archive/cpp-1.0.0.tar.gz
==> Downloading from https://codeload.github.com/msgpack/msgpack-c/tar.gz/cpp-1.0.0
######################################################################## 100.0%
==> Downloading https://raw.githubusercontent.com/neovim/deps/master/opt/LuaJIT-2.0.4.tar.gz
######################################################################## 100.0%
==> Downloading https://github.com/keplerproject/luarocks/archive/5d8a16526573b36d5b22aa74866120c998466697.tar.gz
==> Downloading from https://codeload.github.com/keplerproject/luarocks/tar.gz/5d8a16526573b36d5b22aa74866120c998466697
######################################################################## 100.0%
==> Downloading https://github.com/mauke/unibilium/archive/v1.2.0.tar.gz
==> Downloading from https://codeload.github.com/mauke/unibilium/tar.gz/v1.2.0
######################################################################## 100.0%
==> Downloading http://www.leonerd.org.uk/code/libtermkey/libtermkey-0.18.tar.gz
######################################################################## 100.0%
==> Downloading https://github.com/neovim/libvterm/archive/1b745d29d45623aa8d22a7b9288c7b0e331c7088.tar.gz
==> Downloading from https://codeload.github.com/neovim/libvterm/tar.gz/1b745d29d45623aa8d22a7b9288c7b0e331c7088
######################################################################## 100.0%
==> Downloading https://github.com/jemalloc/jemalloc/releases/download/4.0.2/jemalloc-4.0.2.tar.bz2
==> Downloading from https://github-cloud.s3.amazonaws.com/releases/13310527/17afd0b4-6058-11e5-9f4d-a15a42f2d941.bz2?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAISTNZF
######################################################################## 100.0%
==> Building third-party dependencies.
==> cmake ../third-party -DUSE_BUNDLED_BUSTED=OFF -DUSE_EXISTING_SRC_DIR=ON -DCMAKE_C_FLAGS_RELEASE=-DNDEBUG -DCMAKE_CXX_FLAGS_RELEASE=-DNDEBUG -DCMAKE_INSTALL_PREFIX=/usr/local/
==> make VERBOSE=1
Last 15 lines from /Users/mkozjak/Library/Logs/Homebrew/neovim/02.make:
/usr/local/Cellar/cmake/3.5.1/bin/cmake -E make_directory /tmp/neovim20160413-45289-696zhv/deps-build/build/tmp
/usr/local/Cellar/cmake/3.5.1/bin/cmake -E make_directory /tmp/neovim20160413-45289-696zhv/deps-build/build/src/luv-static-stamp
/usr/local/Cellar/cmake/3.5.1/bin/cmake -E make_directory /tmp/neovim20160413-45289-696zhv/deps-build/build/downloads/luv
/usr/local/Cellar/cmake/3.5.1/bin/cmake -E touch /tmp/neovim20160413-45289-696zhv/deps-build/build/src/luv-static-stamp/luv-static-mkdir
[ 91%] Performing download step for 'luv-static'
cd /tmp/neovim20160413-45289-696zhv/deps-build/build/downloads/luv && /usr/local/Cellar/cmake/3.5.1/bin/cmake -DPREFIX=/tmp/neovim20160413-45289-696zhv/deps-build/build -DDOWNLOAD_DIR=/tmp/neovim20160413-45289-696zhv/deps-build/build/downloads/luv -DURL=https://github.com/luvit/luv/archive/146f1ce4c08c3b67f604c9ee1e124b1cf5c15cf3.tar.gz -DEXPECTED_SHA256=3d537f8eb9fa5adb146a083eae22af886aee324ec268e2aa0fa75f2f1c52ca7a -DTARGET=luv -DUSE_EXISTING_SRC_DIR=ON -P /tmp/neovim20160413-45289-696zhv/third-party/cmake/DownloadAndExtractFile.cmake
CMake Error at /tmp/neovim20160413-45289-696zhv/third-party/cmake/DownloadAndExtractFile.cmake:33 (message):
  USE_EXISTING_SRC_DIR set to ON, but
  '/tmp/neovim20160413-45289-696zhv/deps-build/build/src/luv' does not exist
  or is empty.


make[2]: *** [build/src/luv-static-stamp/luv-static-download] Error 1
make[1]: *** [CMakeFiles/luv-static.dir/all] Error 2
make: *** [all] Error 2

READ THIS: https://git.io/brew-troubleshooting
If reporting this issue please do so at (not Homebrew/brew):
  https://github.com/neovim/homebrew-neovim/issues

These open issues may also help:
Install Error after neovim/neovim#4398 https://github.com/neovim/homebrew-neovim/issues/143
Error when trying to install neovim in my Ubuntu 14.04 virtual machine. https://github.com/neovim/homebrew-neovim/issues/134

Did you fix this issue? I have same :(

Same here...