Move everything to Poetry

[celeron533]

• Install and config Poetry
• Using old installer because the new installer does not support 'no-use-pep517'
• Move the dependencies from requirements.txt files to pyproject.toml
• Update .gitignore
• Check in the poetry.lock. If any developer needs to update the dependencies in pyproject.toml, remember to run poetry lock to update the lock file and commit this file. (Seems need to update the readme.md later)

[didymo]

Warning: poetry.lock is not consistent with pyproject.toml. You may be getting improper dependencies. Run poetry lock [--no-update] to fix it.

[sjswerdloff]

the poetry.lock file contents will depend on which version of Python is in use, and potentially on which platform. We might want to introduce a matrix of poetry.lock files and tell the user that they need to move the appropriate one in to place.

[celeron533]

Hi @sjswerdloff there are some discussions about this topic. https://github.com/python-poetry/poetry/issues/2560#issuecomment-644249484

And can define the python restricted dependencies: https://python-poetry.org/docs/dependency-specification/#python-restricted-dependencies

Sample

[tool.poetry.group.dependencies]
foo = {version = "12", python = "3.9", markers = "sys_platform == 'win32'"}
foo = {version = "13", python = "3.9", markers = "sys_platform == 'darwin'"}
foo = {version = "13", python = "3.10", markers = "sys_platform == 'win32'"}
foo = {version = "14", python = "3.10", markers = "sys_platform == 'darwin'"}

[sjswerdloff]

Hi @sjswerdloff there are some discussions about this topic. https://github.com/python-poetry/poetry/issues/2560#issuecomment-644249484

And can define the python restricted dependencies: https://python-poetry.org/docs/dependency-specification/#python-restricted-dependencies

Sample

[tool.poetry.group.dependencies]
foo = {version = "12", python = "3.9", markers = "sys_platform == 'win32'"}
foo = {version = "13", python = "3.9", markers = "sys_platform == 'darwin'"}
foo = {version = "13", python = "3.10", markers = "sys_platform == 'win32'"}
foo = {version = "14", python = "3.10", markers = "sys_platform == 'darwin'"}

This would be an appropriate PR