gluonts: Cannot use R models in version 0.11.x--follow up

Description

This is a follow-up bug report to #2414.

Problem: Some *.R files are missing when installing gluonts 0.11.x via poetry.

To Reproduce

I reproduced like this:

• fresh poetry projects for both gluonts 0.9.x (the version we’re using right now) and gluonts 0.11.x (the one we want to use)
• both use python 3.8.x and poetry 1.2.x (i’m using a poetry beta, a team mate has the same issue with the most recent poetry version 1.2.2)

Result:

• *.R files are there for 0.9.x and none is there for 0.11.x
• both versions have a folder of *.R files, see here for 11 and here for 9

I provide two code blocks (of one shell sessions) how to reproduce.

/tmp> python --version
Python 3.8.10
/tmp> poetry --version
Poetry (version 1.2.0b1)
/tmp> mkdir gluonts11
/tmp> mkdir gluonts9
/tmp> cd gluonts11 
/tmp/gluonts11> echo "[virtualenvs]\nin-project = true" >> poetry.toml
/tmp/gluonts11> cat poetry.toml 
[virtualenvs]
in-project = true
/tmp/gluonts11> poetry init

This command will guide you through creating your pyproject.toml config.

Package name [gluonts11]:  
Version [0.1.0]:  
Description []:  
Author [Bert Besser <...>, n to skip]:  
License []:  
Compatible Python versions [^3.8]:  

Would you like to define your main dependencies interactively? (yes/no) [yes] 
You can specify a package in the following forms:
  - A single name (requests)
  - A name and a constraint (requests@^2.23.0)
  - A git url (git+https://github.com/python-poetry/poetry.git)
  - A git url with a revision (git+https://github.com/python-poetry/poetry.git#develop)
  - A file path (../my-package/my-package.whl)
  - A directory (../my-package/)
  - A url (https://example.com/packages/my-package-0.1.0.tar.gz)

Search for package to add (or leave blank to continue): gluonts@^0.11.2
Adding gluonts@^0.11.2

Add a package: 

Would you like to define your development dependencies interactively? (yes/no) [yes] no
Generated file

[tool.poetry]
name = "gluonts11"
version = "0.1.0"
description = ""
authors = ["Bert Besser <...>"]
readme = "README.md"

[tool.poetry.dependencies]
python = "^3.8"
gluonts = "^0.11.2"


[build-system]
requires = ["poetry-core"]
build-backend = "poetry.core.masonry.api"


Do you confirm generation? (yes/no) [yes] 
/tmp/gluonts11> poetry install
Creating virtualenv gluonts11 in /tmp/gluonts11/.venv
Updating dependencies
Resolving dependencies... (0.6s)

Writing lock file

Package operations: 10 installs, 0 updates, 0 removals

  • Installing six (1.16.0)
  • Installing numpy (1.23.5)
  • Installing python-dateutil (2.8.2)
  • Installing pytz (2022.6)
  • Installing typing-extensions (4.4.0)
  • Installing pandas (1.5.2)
  • Installing pydantic (1.10.2)
  • Installing toolz (0.12.0)
  • Installing tqdm (4.64.1)
  • Installing gluonts (0.11.2)
/tmp/gluonts11> find .venv | grep "\.R"
exit 1
/tmp/gluonts11> # no R files here for 0.11.x

So there are no *.R files for 0.11.x.

… continuing in the same shell session …

/tmp/gluonts11> cd ../gluonts9
/tmp/gluonts9> echo "[virtualenvs]\nin-project = true" >> poetry.toml    
/tmp/gluonts9> poetry init

This command will guide you through creating your pyproject.toml config.

Package name [gluonts9]:  
Version [0.1.0]:  
Description []:  
Author [Bert Besser <...>, n to skip]:  
License []:  
Compatible Python versions [^3.8]:  

Would you like to define your main dependencies interactively? (yes/no) [yes] 
You can specify a package in the following forms:
  - A single name (requests)
  - A name and a constraint (requests@^2.23.0)
  - A git url (git+https://github.com/python-poetry/poetry.git)
  - A git url with a revision (git+https://github.com/python-poetry/poetry.git#develop)
  - A file path (../my-package/my-package.whl)
  - A directory (../my-package/)
  - A url (https://example.com/packages/my-package-0.1.0.tar.gz)

Search for package to add (or leave blank to continue): gluonts@^0.9.4
Adding gluonts@^0.9.4

Add a package: 

Would you like to define your development dependencies interactively? (yes/no) [yes] no
Generated file

[tool.poetry]
name = "gluonts9"
version = "0.1.0"
description = ""
authors = ["Bert Besser <...>"]
readme = "README.md"

[tool.poetry.dependencies]
python = "^3.8"
gluonts = "^0.9.4"


[build-system]
requires = ["poetry-core"]
build-backend = "poetry.core.masonry.api"


Do you confirm generation? (yes/no) [yes] 
/tmp/gluonts9> poetry install
Creating virtualenv gluonts9 in /tmp/gluonts9/.venv
Updating dependencies
Resolving dependencies... (1.3s)

Writing lock file

Package operations: 25 installs, 1 update, 0 removals

  • Installing pyparsing (3.0.9)
  • Installing numpy (1.23.5)
  • Installing packaging (21.3)
  • Installing pymeeus (0.5.11)
  • Updating setuptools (65.3.0 -> 65.6.0)
  • Installing six (1.16.0)
  • Installing tomli (2.0.1)
  • Installing typing-extensions (4.4.0)
  • Installing contourpy (1.0.6): Installing...
  • Installing contourpy (1.0.6)
  • Installing convertdate (2.4.0)
  • Installing cycler (0.11.0)
  • Installing fonttools (4.38.0)
  • Installing hijri-converter (2.2.4)
  • Installing kiwisolver (1.4.4)
  • Installing korean-lunar-calendar (0.3.1)
  • Installing pillow (9.3.0)
  • Installing python-dateutil (2.8.2)
  • Installing pytz (2022.6)
  • Installing setuptools-scm (7.0.5)
  • Installing holidays (0.17)
  • Installing matplotlib (3.6.2)
  • Installing pandas (1.5.2)
  • Installing pydantic (1.10.2)
  • Installing toolz (0.12.0)
  • Installing tqdm (4.64.1)
  • Installing gluonts (0.9.9)
/tmp/gluonts9> find .venv | grep "\.R"                               
.venv/lib/python3.8/site-packages/gluonts/model/r_forecast/R/forecast_methods.R
tmp/gluonts9> # for 0.9.x there is an R file

So there is an *.R file for 0.9.x.

Error message or code output

I will ask my colleague to paste some error message in the following comments.

Environment

• Operating system: linux
• Python version: 3.8.x
• GluonTS version: 0.11.x resp. 0.9.x
• MXNet version: ?