Make source_dir discoverable for non-src project (#3458)

* Update docs

Signed-off-by: Nok <nok.lam.chan@quantumblack.com>

* Added source_dir into pyproject.toml template

Signed-off-by: Nok <nok.lam.chan@quantumblack.com>

* add faq

Signed-off-by: Nok Lam Chan <nok.lam.chan@quantumblack.com>

* update choice of word base on vale suggestion

Signed-off-by: Nok Lam Chan <nok.lam.chan@quantumblack.com>

* add example_pipeline

Signed-off-by: Nok <nok.lam.chan@quantumblack.com>

---------

Signed-off-by: Nok <nok.lam.chan@quantumblack.com>
Signed-off-by: Nok Lam Chan <nok.lam.chan@quantumblack.com>

RELEASE.md

@@ -6,6 +6,7 @@
 * Removed example pipeline requirements when examples are not selected in `tools`.
 * Allowed modern versions of JupyterLab and Jupyter Notebooks.
 * Removed setuptools dependency
+* Added `source_dir` explicitly in `pyproject.toml` for non-src layout project.
 
 ## Breaking changes to the API
 * Added logging about not using async mode in `SequentiallRunner` and `ParallelRunner`.

docs/source/faq/faq.md

@@ -44,6 +44,7 @@ This is a growing set of technical FAQs. The [product FAQs on the Kedro website]
 * [How to use global variables with the `OmegaConfigLoader`](../configuration/advanced_configuration.md#how-to-use-global-variables-with-the-omegaconfigloader)?
 * [How do I use resolvers in the `OmegaConfigLoader`](../configuration/advanced_configuration.md#how-to-use-resolvers-in-the-omegaconfigloader)?
 * [How do I load credentials through environment variables](../configuration/advanced_configuration.md#how-to-load-credentials-through-environment-variables)?
+* [How do I use Kedro with different project structure?](../kedro_project_setup/settings.md#use-kedro-without-the-src-folder)
 
 
 ## Nodes and pipelines

docs/source/kedro_project_setup/settings.md

@@ -31,6 +31,9 @@ Every Kedro project comes with a default pre-populated `pyproject.toml` file in
 package_name = "package_name"
 project_name = "project_name"
 kedro_init_version = "kedro_version"
+tools = ""
+example_pipeline = "False"
+source_dir = "src"
 ```
 
 The `package_name` should be a [valid Python package name](https://peps.python.org/pep-0423/) and the `project_name` should be a human-readable name. They are both mandatory keys for your project.
@@ -40,3 +43,11 @@ this value should also be updated.
 You can also use `pyproject.toml` to specify settings for functionalities such as [micro-packaging](../nodes_and_pipelines/micro_packaging.md).
 You can also store the settings for the other tools you've used in your project, such as [`pytest` for automated testing](../development/automated_testing.md).
 Consult the respective documentation for the tools you have used to check how you can configure the settings with the `pyproject.toml` file for your project.
+
+### Use Kedro without the `src` folder
+Kedro uses the `src` layout by default. It is possible to change this, for example, to use a [flat layout](https://packaging.python.org/en/latest/discussions/src-layout-vs-flat-layout/#src-layout-vs-flat-layout), you can change the `pyproject.toml` as follow.
+
+```diff
++++ source_dir = ""
+--- source_dir = "src"
+```

features/steps/test_starter/{{ cookiecutter.repo_name }}/pyproject.toml

@@ -37,6 +37,8 @@ project_name = "{{ cookiecutter.project_name }}"
 kedro_init_version = "{{ cookiecutter.kedro_version }}"
 tools = {{ cookiecutter.tools | default('') | string | replace('\"', '\\\"') }}
 example_pipeline = "{{ cookiecutter.example_pipeline }}"
+source_dir = "src"
+
 
 [tool.pytest.ini_options]
 addopts = """

kedro/templates/project/{{ cookiecutter.repo_name }}/pyproject.toml

@@ -39,6 +39,7 @@ project_name = "{{ cookiecutter.project_name }}"
 kedro_init_version = "{{ cookiecutter.kedro_version }}"
 tools = {{ cookiecutter.tools | default('') | string | replace('\"', '\\\"') }}
 example_pipeline = "{{ cookiecutter.example_pipeline }}"
+source_dir = "src"
 
 [tool.pytest.ini_options]
 addopts = """