I get this error with floki 0.6.1
=> floki
could not compile dependency :floki, "mix compile" failed. You can recompile this dependency with "mix deps.compile floki", update it with "mix deps.update floki" or clean it with "mix deps.clean floki"
** (UndefinedFunctionError) undefined function: :leex.file/2 (module :leex is not available)
:leex.file('src/floki_selector_lexer.xrl', [scannerfile: 'src/floki_selector_lexer.erl', report: true])
(mix) lib/mix/compilers/erlang.ex:84: anonymous fn/3 in Mix.Compilers.Erlang.compile/3
(elixir) lib/enum.ex:1385: Enum."-reduce/3-lists^foldl/2-0-"/3
(mix) lib/mix/compilers/erlang.ex:83: Mix.Compilers.Erlang.compile/3
(elixir) lib/enum.ex:1043: anonymous fn/3 in Enum.map/2
(elixir) lib/enum.ex:1385: Enum."-reduce/3-lists^foldl/2-0-"/3
(elixir) lib/enum.ex:1043: Enum.map/2
(mix) lib/mix/tasks/compile.all.ex:19: anonymous fn/1 in Mix.Tasks.Compile.All.run/1