1 files changed, 8 insertions, 8 deletions
diff --git a/sphinx/ext/graphviz.py b/sphinx/ext/graphviz.py
index c0a99be08..37626e04f 100644
--- a/sphinx/ext/graphviz.py
+++ b/sphinx/ext/graphviz.py
@@ -8,7 +8,7 @@ import re
 import subprocess
 from os import path
 from subprocess import CalledProcessError
-from typing import Any
+from typing import TYPE_CHECKING, Any
 
 from docutils import nodes
 from docutils.nodes import Node
@@ -20,7 +20,6 @@ from sphinx.errors import SphinxError
 from sphinx.locale import _, __
 from sphinx.util import logging, sha1
 from sphinx.util.docutils import SphinxDirective, SphinxTranslator
-from sphinx.util.fileutil import copy_asset
 from sphinx.util.i18n import search_image_for_language
 from sphinx.util.nodes import set_source_info
 from sphinx.util.osutil import ensuredir
@@ -31,6 +30,9 @@ from sphinx.writers.manpage import ManualPageTranslator
 from sphinx.writers.texinfo import TexinfoTranslator
 from sphinx.writers.text import TextTranslator
 
+if TYPE_CHECKING:
+    from sphinx.config import Config
+
 logger = logging.getLogger(__name__)
 
 
@@ -391,11 +393,9 @@ def man_visit_graphviz(self: ManualPageTranslator, node: graphviz) -> None:
     raise nodes.SkipNode
 
 
-def on_build_finished(app: Sphinx, exc: Exception) -> None:
-    if exc is None and app.builder.format == 'html':
-        src = path.join(sphinx.package_dir, 'templates', 'graphviz', 'graphviz.css')
-        dst = path.join(app.outdir, '_static')
-        copy_asset(src, dst)
+def on_config_inited(_app: Sphinx, config: Config) -> None:
+    css_path = path.join(sphinx.package_dir, 'templates', 'graphviz', 'graphviz.css')
+    config.html_static_path.append(css_path)
 
 
 def setup(app: Sphinx) -> dict[str, Any]:
@@ -412,5 +412,5 @@ def setup(app: Sphinx) -> dict[str, Any]:
     app.add_config_value('graphviz_dot_args', [], 'html')
     app.add_config_value('graphviz_output_format', 'png', 'html')
     app.add_css_file('graphviz.css')
-    app.connect('build-finished', on_build_finished)
+    app.connect('config-inited', on_config_inited)
     return {'version': sphinx.__display_version__, 'parallel_read_safe': True}