1-works.nix

with import <nixpkgs> {};
stdenv.mkDerivation {
  name = "color_coded-2017-10-30";
  src = fetchgit {
    url = "https://github.com/jeaye/color_coded";
    rev = "cb356b083362ea6f15bc690c5eb10b01326ad169";
    sha256 = "0l46ar1b3vy7gbrq2ic734vvw7zcvw6ar78zyhwz55h2lxfh89aq";
  };
  dependencies = [];
  buildInputs = [
    stdenv
    cmake
    lua
    ncurses
    zlib
    llvm
    llvmPackages.clang.cc
  ];
  cmakeFlags = [ "-DDOWNLOAD_CLANG=0" ];
  preConfigure = ''
    sed -i "s/add_dependencies(\S\+ \S\+_track_api)//" CMakeLists.txt
    clang_version=$(clang --version | head -1 | sed 's/clang version \(\S\+\).*/\1/')
    . ./lib/generate_sources ${llvm} $clang_version
  '';
  buildPhase = ''
    patchShebangs .
    make install
  '';
}

2-broken.nix

  color_coded = buildVimPluginFrom2Nix { # created by nix#NixDerivation
    name = "color_coded-2017-10-30";
    src = fetchgit {
      url = "https://github.com/jeaye/color_coded";
      rev = "cb356b083362ea6f15bc690c5eb10b01326ad169";
      sha256 = "0l46ar1b3vy7gbrq2ic734vvw7zcvw6ar78zyhwz55h2lxfh89aq";
    };
    dependencies = [];
    buildInputs = [
      stdenv
      cmake
      lua
      ncurses
      zlib
      llvm_39
      llvmPackages.clang.cc
    ];
    buildPhase = ''
      patchShebangs .
      sed -i "s/add_dependencies(\S\+ \S\+_track_api)//" CMakeLists.txt

      clang_version=$(clang --version | head -1 | sed 's/clang version \(\S\+\).*/\1/')
      . ./lib/generate_sources ${llvm_39} $clang_version

      cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_SKIP_BUILD_RPATH=ON \
            -DCMAKE_INSTALL_INCLUDEDIR=$out/include -DCMAKE_INSTALL_LIBDIR=$out/lib \
            -DCMAKE_INSTALL_NAME_DIR=$out/lib -DCMAKE_INSTALL_PREFIX=$out \
            -DDOWNLOAD_CLANG=0 .
      make install
    '';
  };

# Fails to install, since `make install` is doing something different (likely some more cmake differences?)
# Install the project...                                                                                                                            
# -- Install configuration: "Release"                                                                                                               
# CMake Error at cmake_install.cmake:50 (file):                                                                                                     
#  file INSTALL cannot find                                                                                                                        
#  "/tmp/nix-build-vimplugin-color_coded-2017-10-30.drv-0/color_coded-cb356b0/color_coded.so".