elm/http をインストール後に elm-test を実行するとパッケージの依存でエラーになる

invalid_package_dependencies.txt

$ mkdir elm-hoge-test
$ cd elm-hoge-test
$ elm init
Hello! Elm projects always start with an elm.json file. I can create them!

Now you may be wondering, what will be in this file? How do I add Elm files to
my project? How do I see it in the browser? How will my code grow? Do I need
more directories? What about tests? Etc.

Check out <https://elm-lang.org/0.19.0/init> for all the answers!

Knowing all that, would you like me to create an elm.json file now? [Y/n]:
Okay, I created it. Now read that link!

$ elm-test init
Here is my plan:

  Add:
    elm/random               1.0.0
    elm-explorations/test    1.2.1

Would you like me to update your elm.json accordingly? [Y/n]:
Dependencies loaded from local cache.
Dependencies ready!

Check out the documentation for getting started at https://package.elm-lang.org/packages/elm-explorations/test/latest

$ elm-test

elm-test 0.19.0-rev6
--------------------

Running 1 test. To reproduce these results, run: elm-test --fuzz 100 --seed 37510189825102 tests/Example.elm


TEST RUN INCOMPLETE because there is 1 TODO remaining

Duration: 902 ms
Passed:   0
Failed:   0
Todo:     1
> Example
? TODO: Implement our first test. See https://package.elm-lang.org/packages/elm-explorations/test/latest for how to do this!



$ elm install elm/http
Here is my plan:

  Add:
    elm/bytes    1.0.8
    elm/file     1.0.5
    elm/http     2.0.0

Would you like me to update your elm.json accordingly? [Y/n]:
Dependencies loaded from local cache.
Dependencies ready!

$ elm-test
-- INVALID PACKAGE DEPENDENCIES --------------------------------------- elm.json

The dependencies in your elm.json are not compatible.

Did you change them by hand? Try to change it back! It is much better to add
dependencies with elm install or the dependency management tool in elm reactor.

Please ask for help on the Elm slack <http://elmlang.herokuapp.com/> if you try
those paths and still cannot figure it out!

Compilation failed while attempting to build tests/Example.elm

下記の対処で一応解決：

elm-testでThe dependencies in your elm.json are not compatibleと怒られたので対処した
https://qiita.com/Keck/items/de61ff566b99a76a1cd0

解決方法としては

npx elm install elm/json

とし、elm/jsonパッケージをindirectからdirectにしてやればいいようです