phx.gen.live doesn't work in umbrella app

[cjbottaro]

$ mix phx.gen.live Signup
** (Mix) mix phx.gen.live must be invoked from within your *_web application root directory

$ cd apps/web

$ mix phx.gen.live --no-context --no-schema Signup
** (Mix) Invalid arguments

mix phx.gen.html, phx.gen.json, phx.gen.live, and phx.gen.context
expect a context module name, followed by singular and plural names
of the generated resource, ending with any number of attributes.
For example:

    mix phx.gen.html Accounts User users name:string
    mix phx.gen.json Accounts User users name:string
    mix phx.gen.live Accounts User users name:string
    mix phx.gen.context Accounts User users name:string

The context serves as the API boundary for the given resource.
Multiple resources may belong to a context and a resource may be
split over distinct contexts (such as Accounts.User and Payments.User).

$ mix phx.gen.live --no-context --no-schema Foo Signup users
** (Mix) no context_app configured for current application web.

Add the context_app generators config in config.exs, or pass the
--context-app option explicitly to the generators. For example:

via config:

    config :web, :generators,
      context_app: :some_app

via cli option:

    mix phx.gen.[task] --context-app some_app

Note: cli option only works when `context_app` is not set to `false`
in the config.

# add to my config/config.exs: config :web, :generators, context_app: :web

$ mix phx.gen.live --no-context --no-schema --context-app web Foo Signup users
* creating lib/web_web/live/signup_live/show.ex
* creating lib/web_web/live/signup_live/index.ex
* creating lib/web_web/live/signup_live/form_component.ex
* creating lib/web_web/live/signup_live/form_component.html.heex
* creating lib/web_web/live/signup_live/index.html.heex
* creating lib/web_web/live/signup_live/show.html.heex
* creating test/web_web/live/signup_live_test.exs
* creating lib/web_web/live/modal_component.ex
* creating lib/web_web/live/live_helpers.ex
** (File.Error) could not read file "lib/web_web.ex": no such file or directory
    (elixir 1.12.3) lib/file.ex:355: File.read!/1
    lib/mix/tasks/phx.gen.live.ex:151: Mix.Tasks.Phx.Gen.Live.maybe_inject_helpers/1
    lib/mix/tasks/phx.gen.live.ex:103: Mix.Tasks.Phx.Gen.Live.run/1
    (mix 1.12.3) lib/mix/task.ex:394: anonymous fn/3 in Mix.Task.run_task/3
    (mix 1.12.3) lib/mix/cli.ex:84: Mix.CLI.run_task/2

It finally generates some things, but crashes before it finishes. Further, it seems to completely ignore --no-context and --no-schema.

I'm using Phoenix 1.6.2.

Thanks for the help.

[cjbottaro]

Also, more or less the same thing happens with phx.gen.auth.

[milmazz]

@cjbottaro I couldn't replicate your scenario, please see the details:

$ mix archive.uninstall phx_new
Are you sure you want to uninstall /Users/milmazz/.asdf/installs/elixir/1.12.2-otp-24/.mix/archives/phx_new-1.6.0? [Yn] Y
$ mix archive.install hex phx_new
Resolving Hex dependencies...
Dependency resolution completed:
New:
  phx_new 1.6.2
* Getting phx_new (Hex package)
All dependencies are up to date
Compiling 11 files (.ex)
Generated phx_new app
Generated archive "phx_new-1.6.2.ez" with MIX_ENV=prod
Are you sure you want to install "phx_new-1.6.2.ez"? [Yn] Y
* creating /Users/milmazz/.asdf/installs/elixir/1.12.2-otp-24/.mix/archives/phx_new-1.6.2

Create Umbrella Project

$ mix phx.new web --umbrella
* creating web_umbrella/.gitignore
* creating web_umbrella/config/config.exs
* creating web_umbrella/config/dev.exs
* creating web_umbrella/config/test.exs
* creating web_umbrella/config/prod.exs
* creating web_umbrella/config/runtime.exs
* creating web_umbrella/mix.exs
* creating web_umbrella/README.md
* creating web_umbrella/.formatter.exs
* creating web_umbrella/apps/web_web/lib/web_web.ex
* creating web_umbrella/apps/web_web/lib/web_web/application.ex
* creating web_umbrella/apps/web_web/lib/web_web/endpoint.ex
* creating web_umbrella/apps/web_web/lib/web_web/router.ex
* creating web_umbrella/apps/web_web/lib/web_web/telemetry.ex
* creating web_umbrella/apps/web_web/lib/web_web/views/error_helpers.ex
* creating web_umbrella/apps/web_web/lib/web_web/views/error_view.ex
* creating web_umbrella/apps/web_web/mix.exs
* creating web_umbrella/apps/web_web/README.md
* creating web_umbrella/apps/web_web/.gitignore
* creating web_umbrella/apps/web_web/test/test_helper.exs
* creating web_umbrella/apps/web_web/test/support/channel_case.ex
* creating web_umbrella/apps/web_web/test/support/conn_case.ex
* creating web_umbrella/apps/web_web/test/web_web/views/error_view_test.exs
* creating web_umbrella/apps/web_web/.formatter.exs
* creating web_umbrella/apps/web_web/lib/web_web/controllers/page_controller.ex
* creating web_umbrella/apps/web_web/lib/web_web/views/layout_view.ex
* creating web_umbrella/apps/web_web/lib/web_web/views/page_view.ex
* creating web_umbrella/apps/web_web/test/web_web/controllers/page_controller_test.exs
* creating web_umbrella/apps/web_web/test/web_web/views/page_view_test.exs
* creating web_umbrella/apps/web_web/assets/vendor/topbar.js
* creating web_umbrella/apps/web_web/lib/web_web/templates/layout/root.html.heex
* creating web_umbrella/apps/web_web/lib/web_web/templates/layout/app.html.heex
* creating web_umbrella/apps/web_web/lib/web_web/templates/layout/live.html.heex
* creating web_umbrella/apps/web_web/lib/web_web/templates/page/index.html.heex
* creating web_umbrella/apps/web_web/test/web_web/views/layout_view_test.exs
* creating web_umbrella/apps/web_web/lib/web_web/gettext.ex
* creating web_umbrella/apps/web_web/priv/gettext/en/LC_MESSAGES/errors.po
* creating web_umbrella/apps/web_web/priv/gettext/errors.pot
* creating web_umbrella/apps/web_web/assets/css/phoenix.css
* creating web_umbrella/apps/web_web/assets/css/app.css
* creating web_umbrella/apps/web_web/assets/js/app.js
* creating web_umbrella/apps/web_web/priv/static/robots.txt
* creating web_umbrella/apps/web_web/priv/static/images/phoenix.png
* creating web_umbrella/apps/web_web/priv/static/favicon.ico
* creating web_umbrella/apps/web/lib/web/application.ex
* creating web_umbrella/apps/web/lib/web.ex
* creating web_umbrella/apps/web/test/test_helper.exs
* creating web_umbrella/apps/web/README.md
* creating web_umbrella/apps/web/mix.exs
* creating web_umbrella/apps/web/.gitignore
* creating web_umbrella/apps/web/.formatter.exs
* creating web_umbrella/apps/web/lib/web/repo.ex
* creating web_umbrella/apps/web/priv/repo/migrations/.formatter.exs
* creating web_umbrella/apps/web/priv/repo/seeds.exs
* creating web_umbrella/apps/web/test/support/data_case.ex
* creating web_umbrella/apps/web/lib/web/mailer.ex

Fetch and install dependencies? [Yn] Y
* running mix deps.get
* running mix deps.compile

We are almost there! The following steps are missing:

    $ cd web_umbrella

Then configure your database in config/dev.exs and run:

    $ mix ecto.create

Start your Phoenix app with:

    $ mix phx.server

You can also run your app inside IEx (Interactive Elixir) as:

    $ iex -S mix phx.server

$ cd web_umbrella/apps/web_web/
$ mix phx.gen.live --no-context --no-schema --context-app web Foo Signup users
==> web
Compiling 4 files (.ex)
Generated web app
==> web_web
* creating lib/web_web/live/signup_live/show.ex
* creating lib/web_web/live/signup_live/index.ex
* creating lib/web_web/live/signup_live/form_component.ex
* creating lib/web_web/live/signup_live/form_component.html.heex
* creating lib/web_web/live/signup_live/index.html.heex
* creating lib/web_web/live/signup_live/show.html.heex
* creating test/web_web/live/signup_live_test.exs
* creating lib/web_web/live/modal_component.ex
* creating lib/web_web/live/live_helpers.ex
* injecting lib/web_web.ex

Add the live routes to your browser scope in lib/web_web/router.ex:

    live "/users", SignupLive.Index, :index
    live "/users/new", SignupLive.Index, :new
    live "/users/:id/edit", SignupLive.Index, :edit

    live "/users/:id", SignupLive.Show, :show
    live "/users/:id/show/edit", SignupLive.Show, :edit

[josevalim]

I also could not reproduce this. Please reopen if it persists in more recent Phoenix versions. :)