Hexpm adapter: hex package fetch handling

[ChGen]

Hexpm adapter recently started to have issues with installing package in Artipie integration tests. Since tools/docker image versions have been stable and package data also stable, looks like some extra dependencies/scripts/metadata files are used by mix package manager which are downloaded from its repositories by mix on every test run. I tried elixir:1.12.3, elixir:1.17.1 and few other versions of the client docker container with the same result.
I also tried to force install old version of hexpm/hex dependency too, but it didn't help:

mix archive.install github hexpm/hex branch v1.0

The repository list looks like this:

mix hex.repo list

Name     URL                                        Public key                                          Auth key
hexpm    https://repo.hex.pm                        SHA256:O1LOYhHFW4kcrblKAxROaDEzLD8bn1seWbe5tq8TRsk
my_repo  http://host.testcontainers.internal:34955

This issue could be reproduced locally, as well as in GitHub CI.
Another alternative could be to update/change test packages data. May be some of the dependencies or its features got obsolete.
Below is the error log:

mix hex.package fetch decimal 2.0.0 --repo=my_repo

12:53:22.789 [error] GenServer Hex.Registry.Server terminating
** (FunctionClauseError) no function clause matching in anonymous fn/1 in Hex.Registry.Server.write_result/4
    (hex 2.1.1) lib/hex/registry/server.ex:367: anonymous fn({:name, "decimal"}) in Hex.Registry.Server.write_result/4
    (elixir 1.13.4) lib/enum.ex:942: anonymous fn/3 in Enum.each/2
    (stdlib 3.17.2.4) maps.erl:410: :maps.fold_1/3
    (elixir 1.13.4) lib/enum.ex:2408: Enum.each/2
    (hex 2.1.1) lib/hex/registry/server.ex:367: Hex.Registry.Server.write_result/4
    (hex 2.1.1) lib/hex/registry/server.ex:226: Hex.Registry.Server.handle_info/2
    (stdlib 3.17.2.4) gen_server.erl:695: :gen_server.try_dispatch/4
    (stdlib 3.17.2.4) gen_server.erl:771: :gen_server.handle_msg/6
Last message: {:get_package, "my_repo", "decimal", {:ok, {200, <<31, 139, 8, 0, 0, 0, 0, 0, 0, 255, 1, 99, 0, 156, 255, 10, 95, 10, 75, 10, 5, 50, 46, 48, 46, 48, 18, 32, 167, 130,
 150, 230, 23, 176, 245, 221, 76, 108, 175, 87, 199, 20, ...>>, %{"content-length" => "122", "content-type" => "application/octet-stream"}}}}
State: %{ets: #Reference<0.2307738241.3500539905.219719>, fetched: #MapSet<[]>, path: "/root/.hex/cache.ets", pending: #MapSet<[{"my_repo", "decimal"}]>, pending_fun: nil, waiting:
 %{{"my_repo", "decimal"} => [{{#PID<0.94.0>, [:alias | #Reference<0.2307738241.3500474369.219751>]}, #Function<7.32886354/0 in Hex.Registry.Server.handle_call/3>}]}}
** (exit) exited in: GenServer.call(Hex.Registry.Server, {:outer_checksum, "my_repo", "decimal", "2.0.0"}, 60000)
    ** (EXIT) an exception was raised:
        ** (FunctionClauseError) no function clause matching in anonymous fn/1 in Hex.Registry.Server.write_result/4
            (hex 2.1.1) lib/hex/registry/server.ex:367: anonymous fn({:name, "decimal"}) in Hex.Registry.Server.write_result/4
            (elixir 1.13.4) lib/enum.ex:942: anonymous fn/3 in Enum.each/2
            (stdlib 3.17.2.4) maps.erl:410: :maps.fold_1/3
            (elixir 1.13.4) lib/enum.ex:2408: Enum.each/2
            (hex 2.1.1) lib/hex/registry/server.ex:367: Hex.Registry.Server.write_result/4
            (hex 2.1.1) lib/hex/registry/server.ex:226: Hex.Registry.Server.handle_info/2
            (stdlib 3.17.2.4) gen_server.erl:695: :gen_server.try_dispatch/4
            (stdlib 3.17.2.4) gen_server.erl:771: :gen_server.handle_msg/6
    (elixir 1.13.4) lib/gen_server.ex:1030: GenServer.call/3
    (hex 2.1.1) lib/hex/scm.ex:416: Hex.SCM.fetch/3
    (hex 2.1.1) lib/mix/tasks/hex.package.ex:199: Mix.Tasks.Hex.Package.fetch_tarball!/3
    (hex 2.1.1) lib/mix/tasks/hex.package.ex:159: Mix.Tasks.Hex.Package.fetch/5
    (mix 1.13.4) lib/mix/task.ex:397: anonymous fn/3 in Mix.Task.run_task/3
    (mix 1.13.4) lib/mix/cli.ex:84: Mix.CLI.run_task/2

See also: #1435

[ChGen]

So, the issue needs further investigation, for now download tests will be disabled for hexpm tests in hexpm-adapter and in artipie-main. And in smoke tests too. See corresponding PR: #1465

[github-actions]

Issue is stale, CC: @artipie/maintainers