How can I change deps compilation order?

alex9spiridonov · August 22, 2019, 8:50am

I have a problem with compiling dependencies in my phoenix project.

defp deps do
    [
      # default phoenix deps
      {:phoenix, "~> 1.4.9"},
      {:phoenix_pubsub, "~> 1.1"},
      {:phoenix_ecto, "~> 4.0"},
      {:ecto_sql, "~> 3.1"},
      {:postgrex, ">= 0.0.0"},
      {:phoenix_html, "~> 2.11"},
      {:phoenix_live_reload, "~> 1.2", only: :dev},
      {:gettext, "~> 0.11"},
      {:jason, "~> 1.0"},
      {:plug_cowboy, "~> 2.0"},
      # deps for exometer
      {:elixometer, github: "pinterest/elixometer"},
      {:exometer_core, override: true},
      {:exometer, github: "PSPDFKit-labs/exometer", runtime: false}
    ]
  end

I have an error on compiling exometer.

mix deps.compile
===> Compiling setup
src/setup.erl:944: Warning: erlang:get_stacktrace/0: deprecated; use the new try/catch syntax for retrieving the stack backtrace
src/setup.erl:1163: Warning: erlang:get_stacktrace/0: deprecated; use the new try/catch syntax for retrieving the stack backtrace
src/setup.erl:1588: Warning: erlang:get_stacktrace/0: deprecated; use the new try/catch syntax for retrieving the stack backtrace

===> Building escript...
===> Compiling bear
===> Compiling parse_trans
==> hut (compile)
Compiled src/hut.erl

11:06:45.120 [info]  Compiling file system watcher for Mac...

11:06:46.564 [info]  Done.
==> file_system
Compiling 7 files (.ex)
Generated file_system app
==> connection
Compiling 1 file (.ex)
Generated connection app
==> gettext
Compiling 1 file (.yrl)
Compiling 1 file (.erl)
Compiling 20 files (.ex)
Generated gettext app
===> Compiling ranch
===> Compiling telemetry
==> decimal
Compiling 1 file (.ex)
Generated decimal app
===> Compiling folsom
===> Compiling exometer_core
src/exometer_proc.erl:219: Warning: sys:get_debug/3: Deprecated function. Incorrectly documented and in fact only for internal use. Can often be replaced with sys:get_log/1.

===> Compiling exometer
===> Compiling src/exometer_app.erl failed
src/exometer_app.erl:none: undefined parse transform 'lager_transform'

==> little_phoenix
** (Mix) Could not compile dependency :exometer, "/Users/alex/.mix/rebar3 bare compile --paths "/Users/alex/Development/little_phoenix/_build/dev/lib/*/ebin"" command failed. You can recompile this dependency with "mix deps.compile exometer", update it with "mix deps.update exometer" or clean it with "mix deps.clean exometer"

But if I compile project in 2 steps:

remove exometer and compile without it

mix deps.compile
===> Compiling setup
src/setup.erl:944: Warning: erlang:get_stacktrace/0: deprecated; use the new try/catch syntax for retrieving the stack backtrace
src/setup.erl:1163: Warning: erlang:get_stacktrace/0: deprecated; use the new try/catch syntax for retrieving the stack backtrace
src/setup.erl:1588: Warning: erlang:get_stacktrace/0: deprecated; use the new try/catch syntax for retrieving the stack backtrace

===> Building escript...
===> Compiling bear
===> Compiling parse_trans
==> hut (compile)
Compiled src/hut.erl

11:18:44.667 [info]  Compiling file system watcher for Mac...

11:18:45.357 [info]  Done.
==> file_system
Compiling 7 files (.ex)
Generated file_system app
==> connection
Compiling 1 file (.ex)
Generated connection app
==> gettext
Compiling 1 file (.yrl)
Compiling 1 file (.erl)
Compiling 20 files (.ex)
Generated gettext app
===> Compiling ranch
===> Compiling telemetry
==> decimal
Compiling 1 file (.ex)
Generated decimal app
===> Compiling folsom
===> Compiling exometer_core
src/exometer_proc.erl:219: Warning: sys:get_debug/3: Deprecated function. Incorrectly documented and in fact only for internal use. Can often be replaced with sys:get_log/1.

==> jason
Compiling 8 files (.ex)
Generated jason app
===> Fetching rebar3_proper ({pkg,<<"rebar3_proper">>,<<"0.11.1">>})
===> Version cached at /Users/alex/.cache/rebar3/hex/default/packages/rebar3_proper-0.11.1.tar is up to date, reusing it
===> Compiling rebar3_proper
===> Compiling pobox
==> db_connection
Compiling 14 files (.ex)
Generated db_connection app
==> ecto
Compiling 54 files (.ex)
Generated ecto app
==> phoenix_pubsub
Compiling 13 files (.ex)
Generated phoenix_pubsub app
===> Compiling cowlib
===> Compiling cowboy
==> mime
Compiling 2 files (.ex)
Generated mime app
===> Compiling goldrush
===> Compiling lager
==> elixometer
Compiling 5 files (.ex)
Generated elixometer app
==> postgrex
Compiling 61 files (.ex)
Generated postgrex app
==> ecto_sql
Compiling 25 files (.ex)
Generated ecto_sql app
==> plug_crypto
Compiling 4 files (.ex)
Generated plug_crypto app
==> plug
Compiling 1 file (.erl)
Compiling 39 files (.ex)
warning: System.stacktrace/0 outside of rescue/catch clauses is deprecated. If you want to support only Elixir v1.7+, you must access __STACKTRACE__ inside a rescue/catch. If you want to support earlier Elixir versions, move System.stacktrace/0 inside a rescue/catch
  lib/plug/conn/wrapper_error.ex:23

Generated plug app
==> phoenix_html
Compiling 8 files (.ex)
Generated phoenix_html app
==> plug_cowboy
Compiling 6 files (.ex)
Generated plug_cowboy app
==> phoenix
Compiling 67 files (.ex)
Generated phoenix app
==> phoenix_live_reload
Compiling 4 files (.ex)
Generated phoenix_live_reload app
==> phoenix_ecto
Compiling 6 files (.ex)
Generated phoenix_ecto app

add exometer and compile it

mix deps.compile
===> Compiling setup
===> Building escript...
===> Compiling bear
===> Compiling parse_trans
==> hut (compile)
===> Compiling ranch
===> Compiling telemetry
===> Compiling folsom
===> Compiling exometer_core
===> Compiling exometer
===> Compiling pobox
===> Compiling cowlib
===> Compiling cowboy
===> Compiling goldrush
===> Compiling lager

all is well

How can I change the compilation order?
I think I should compile a lager before of the exometer.

Deps compiled in the following order:

Mix.Dep.load_and_cache |> Enum.map(fn(x) -> IO.puts Map.get(x, :app) end)
setup
bear
parse_trans
hut
file_system
connection
gettext
ranch
telemetry
decimal
folsom
exometer_core
exometer
jason
pobox
db_connection
ecto
phoenix_pubsub
cowlib
cowboy
mime
goldrush
lager
elixometer
postgrex
ecto_sql
plug_crypto
plug
phoenix_html
plug_cowboy
phoenix
phoenix_live_reload
phoenix_ecto

Deps tree:

mix deps.tree
little_phoenix
├── gettext ~> 0.11 (Hex package)
├── exometer_core (Hex package) *override*
│   ├── folsom 0.8.7 (Hex package)
│   │   └── bear 0.8.7 (Hex package)
│   ├── hut 1.2.1 (Hex package)
│   ├── parse_trans 3.3.0 (Hex package)
│   └── setup 2.0.2 (Hex package)
├── exometer (https://github.com/PSPDFKit-labs/exometer.git)
│   └── exometer_core ~r/.*/ (git://github.com/PSPDFKit-labs/exometer_core.git) *override*
├── jason ~> 1.0 (Hex package)
│   └── decimal ~> 1.0 (Hex package)
├── phoenix_pubsub ~> 1.1 (Hex package)
├── elixometer (https://github.com/pinterest/elixometer.git)
│   ├── lager >= 3.2.1 (Hex package)
│   │   └── goldrush 0.1.9 (Hex package)
│   ├── exometer_core ~> 1.5 (Hex package)
│   └── pobox ~> 1.2 (Hex package)
├── postgrex >= 0.0.0 (Hex package)
│   ├── connection ~> 1.0 (Hex package)
│   ├── db_connection ~> 2.1 (Hex package)
│   │   └── connection ~> 1.0.2 (Hex package)
│   ├── decimal ~> 1.5 (Hex package)
│   └── jason ~> 1.0 (Hex package)
├── ecto_sql ~> 3.1 (Hex package)
│   ├── db_connection ~> 2.0 (Hex package)
│   ├── ecto ~> 3.1.0 (Hex package)
│   │   ├── decimal ~> 1.6 (Hex package)
│   │   └── jason ~> 1.0 (Hex package)
│   ├── postgrex ~> 0.14.0 or ~> 0.15.0 (Hex package)
│   └── telemetry ~> 0.4.0 (Hex package)
├── phoenix_html ~> 2.11 (Hex package)
│   └── plug ~> 1.5 (Hex package)
│       ├── mime ~> 1.0 (Hex package)
│       ├── plug_crypto ~> 1.0 (Hex package)
│       └── telemetry ~> 0.4 (Hex package)
├── plug_cowboy ~> 2.0 (Hex package)
│   ├── cowboy ~> 2.5 (Hex package)
│   │   ├── cowlib ~> 2.7.3 (Hex package)
│   │   └── ranch ~> 1.7.1 (Hex package)
│   └── plug ~> 1.7 (Hex package)
├── phoenix ~> 1.4.9 (Hex package)
│   ├── jason ~> 1.0 (Hex package)
│   ├── phoenix_pubsub ~> 1.1 (Hex package)
│   ├── plug ~> 1.8.1 or ~> 1.9 (Hex package)
│   ├── plug_cowboy ~> 1.0 or ~> 2.0 (Hex package)
│   └── telemetry ~> 0.4 (Hex package)
├── phoenix_live_reload ~> 1.2 (Hex package)
│   ├── file_system ~> 0.2.1 or ~> 0.3 (Hex package)
│   └── phoenix ~> 1.4 (Hex package)
└── phoenix_ecto ~> 4.0 (Hex package)
    ├── ecto ~> 3.0 (Hex package)
    ├── phoenix_html ~> 2.9 (Hex package)
    └── plug ~> 1.0 (Hex package)

NobbZ · August 22, 2019, 8:52am

You can not alter the order of compilation, it is determined automatically and make sure that dependencies are compiled before their dependants. Sadly exometer uses lager but hasn’t specified it as a dependency. Please file a bug report on their repository.

alex9spiridonov · August 22, 2019, 1:40pm

Thank you for a good idea!
I made exometer fork, added a dependency. Everything works!