Broken dependencies after elm-codegen init

[aramiscd]

I did the following (a couple of times, on Linux, on Windows)

$ mkdir foo
$ cd foo
$ elm-codegen init
$ elm-codegen run

Every time I got:

The dependencies in your elm.json are not compatible.

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

...

The following seems to work though:

$ mkdir foo
$ cd foo
$ elm-codegen init
$ cd codegen
$ rm elm.json
$ elm init
$ elm install mdgriffith/elm-codegen
$ elm install elm/json
# manually replace "src" with "." in elm.json
$ cd ..
$ elm-codegen run