無法編譯簡單的Elixir項目

Question

我正在通過Dave Thomas的'Programme Elixir'工作。 我現在達到了創建第一個混合項目的程度。 HTTPoison剛剛被引入並添加到mix.exs中的應用程序功能中。 現在應該首次使用iex -S mix編譯項目。 那時我遇到了ssl_verify_hostname問題。 在安裝了erlang-src和erlang-dev我現在停留在以下控制台輸出

$ iex -S mix
Erlang/OTP 18 [erts-7.1] [source] [64-bit] [smp:8:8] [async-threads:10] [kernel-poll:false]

WARN:  Expected /home/..../issues/deps/idna to be an app dir (containing ebin/*.app), but no .app found.
WARN:  Expected /home/..../issues/deps/ssl_verify_hostname to be an app dir (containing ebin/*.app), but no .app found.
==> hackney (compile)
WARN:  Expected /home/..../issues/deps/idna to be an app dir (containing ebin/*.app), but no .app found.
WARN:  Expected /home/..../issues/deps/ssl_verify_hostname to be an app dir (containing ebin/*.app), but no .app found.
Dependency not available: idna-.* ({git,
                                       "https://github.com/benoitc/erlang-idna",
                                       {tag,"1.0.2"}})
Dependency not available: ssl_verify_hostname-.* ({git,
                                                   "https://github.com/deadtrickster/ssl_verify_hostname.erl",
                                                   {tag,"1.0.5"}})
** (ArgumentError) argument error
    (stdlib) :io.put_chars(#PID<0.26.0>, :unicode, <<69, 82, 82, 79, 82, 58, 32, 99, 111, 109, 112, 105, 108, 101, 32, 102, 97, 105, 108, 101, 100, 32, 119, 104, 105, 108, 101, 32, 112, 114, 111, 99, 101, 115, 115, 105, 110, 103, 32, 47, 104, 111, 109, 101, 47, 114, 107, 114, 97, 117, ...>>)
    (mix) lib/mix/shell.ex:78: Mix.Shell.do_cmd/2
    (mix) lib/mix/tasks/deps.compile.ex:161: anonymous fn/5 in Mix.Tasks.Deps.Compile.do_command/4
    (mix) lib/mix/project.ex:196: Mix.Project.in_project/4
    (elixir) lib/file.ex:1061: File.cd!/2
    (mix) lib/mix/dep.ex:137: Mix.Dep.in_dependency/3
    (mix) lib/mix/tasks/deps.compile.ex:160: Mix.Tasks.Deps.Compile.do_command/4
    (mix) lib/mix/tasks/deps.compile.ex:59: anonymous fn/3 in Mix.Tasks.Deps.Compile.compile/1

雖然我搜索了此輸出的不同部分，但我找不到任何有用的信息。

Answer 1

您必須在運行代碼之前安裝所有依賴項。

mix deps.get（它確實下載了依賴項）

mix deps（它安裝依賴項）