build: Define optional-dependencies for sphinx-extension

- Currently, support only Sphinx 7.x
- I will add old versions

pyproject.toml

@@ -38,6 +38,11 @@ Issues = "https://github.com/attakei-lab/rst-budoux/issues"
 "rst-budoux2html" = "rst_budoux.cli.html:main"
 "rst-budoux2pseudoxml" = "rst_budoux.cli.psuedoxml:main"
 
+[project.optional-dependencies]
+sphinx = [
+    "sphinx==7.*",
+]
+
 [build-system]
 requires = ["hatchling"]
 build-backend = "hatchling.build"

requirements-dev.lock

@@ -4,7 +4,7 @@
 # last locked with the following flags:
 #   pre: false
 #   features: []
-#   all-features: false
+#   all-features: true
 #   with-sources: false
 
 -e file:.
@@ -66,6 +66,7 @@ snowballstemmer==2.2.0
     # via sphinx
 sphinx==7.3.7
     # via esbonio
+    # via rst-budoux
 sphinxcontrib-applehelp==1.0.8
     # via sphinx
 sphinxcontrib-devhelp==1.0.6

requirements.lock

@@ -4,11 +4,52 @@
 # last locked with the following flags:
 #   pre: false
 #   features: []
-#   all-features: false
+#   all-features: true
 #   with-sources: false
 
 -e file:.
+alabaster==0.7.16
+    # via sphinx
+babel==2.14.0
+    # via sphinx
 budoux==0.6.2
     # via rst-budoux
+certifi==2024.2.2
+    # via requests
+charset-normalizer==3.3.2
+    # via requests
 docutils==0.21.2
     # via rst-budoux
+    # via sphinx
+idna==3.7
+    # via requests
+imagesize==1.4.1
+    # via sphinx
+jinja2==3.1.3
+    # via sphinx
+markupsafe==2.1.5
+    # via jinja2
+packaging==24.0
+    # via sphinx
+pygments==2.17.2
+    # via sphinx
+requests==2.31.0
+    # via sphinx
+snowballstemmer==2.2.0
+    # via sphinx
+sphinx==7.3.7
+    # via rst-budoux
+sphinxcontrib-applehelp==1.0.8
+    # via sphinx
+sphinxcontrib-devhelp==1.0.6
+    # via sphinx
+sphinxcontrib-htmlhelp==2.0.5
+    # via sphinx
+sphinxcontrib-jsmath==1.0.1
+    # via sphinx
+sphinxcontrib-qthelp==1.0.7
+    # via sphinx
+sphinxcontrib-serializinghtml==1.1.10
+    # via sphinx
+urllib3==2.2.1
+    # via requests