Fix build in readthedocs

Signed-off-by: Aurélien Bompard <[email protected]>

{{ cookiecutter.slug }}/.readthedocs.yml

@@ -27,3 +27,5 @@ python:
   install:
     - method: pip
       path: .
+      extra_requirements:
+        - docs

{{ cookiecutter.slug }}/pyproject.toml

@@ -38,15 +38,18 @@ classifiers = [
 [tool.poetry.dependencies]
 python = "^3.9"
 pydantic-settings = "^2.0.2"
-{% if cookiecutter.with_sqlalchemy %}
+{% if cookiecutter.with_sqlalchemy -%}
 sqlalchemy-helpers = ">=0.12.1"
-{% endif %}
-{% if cookiecutter.with_cli %}
+{%- endif %}
+{% if cookiecutter.with_cli -%}
 click = "^8.1.3"
-{% endif %}
-{% if cookiecutter.with_i18n %}
+{%- endif %}
+{% if cookiecutter.with_i18n -%}
 Babel = "^2.10.0"
-{% endif %}
+{%- endif %}
+sphinx = {version = ">=4.0", optional = true}
+myst-parser = {version = ">=0.16", optional = true}
+sphinxcontrib-napoleon = {version = "*", optional = true}
 
 [tool.poetry.group.dev.dependencies]
 pytest = ">=7.0.0"
@@ -55,11 +58,11 @@ black = ">=23.10.0"
 ruff = ">=0.1.1"
 coverage = {extras = ["toml"], version = ">=7.0.0"}
 diff-cover = ">=8.0.0"
-sphinx = ">=4.0"
-myst-parser = ">=0.16"
 liccheck = ">=0.6"
 pre-commit = ">=2.13"
-sphinxcontrib-napoleon = "*"
+
+[tool.poetry.extras]
+docs = ["sphinx", "myst-parser", "sphinxcontrib-napoleon"]
 
 {% if cookiecutter.with_cli -%}
 [tool.poetry.scripts]