Fix `IsADirectoryError`

sphinx/builders/_epub_base.py

@@ -478,14 +478,22 @@ class EpubBuilder(StandaloneHTMLBuilder):
     def build_mimetype(self) -> None:
         """Write the metainfo file mimetype."""
         logger.info(__('writing mimetype file...'))
-        copyfile(path.join(self.template_dir, 'mimetype'), self.outdir, force=True)
+        copyfile(
+            path.join(self.template_dir, 'mimetype'),
+            self.outdir / 'mimetype',
+            force=True,
+        )
 
     def build_container(self, outname: str = 'META-INF/container.xml') -> None:
         """Write the metainfo file META-INF/container.xml."""
         logger.info(__('writing META-INF/container.xml file...'))
-        outdir = path.join(self.outdir, 'META-INF')
+        outdir = self.outdir / 'META-INF'
         ensuredir(outdir)
-        copyfile(path.join(self.template_dir, 'container.xml'), outdir, force=True)
+        copyfile(
+            path.join(self.template_dir, 'container.xml'),
+            outdir / 'container.xml',
+            force=True,
+        )
 
     def content_metadata(self) -> dict[str, Any]:
         """Create a dictionary with all metadata for the content.opf

sphinx/builders/changes.py

@@ -14,7 +14,7 @@ from sphinx.theming import HTMLThemeFactory
 from sphinx.util import logging
 from sphinx.util.console import bold
 from sphinx.util.fileutil import copy_asset_file
-from sphinx.util.osutil import copyfile, ensuredir, os_path
+from sphinx.util.osutil import ensuredir, os_path
 
 if TYPE_CHECKING:
     from sphinx.application import Sphinx
@@ -147,9 +147,9 @@ class ChangesBuilder(Builder):
             renderer=self.templates,
             force=True,
         )
-        copyfile(
+        copy_asset_file(
             path.join(package_dir, 'themes', 'basic', 'static', 'basic.css'),
-            self.outdir,
+            self.outdir / 'basic.css',
             force=True,
         )
 

sphinx/builders/latex/__init__.py

@@ -432,9 +432,10 @@ class LaTeXBuilder(Builder):
     def copy_latex_additional_files(self) -> None:
         for filename in self.config.latex_additional_files:
             logger.info(' ' + filename, nonl=True)
+            source = self.confdir / filename
             copyfile(
-                self.confdir / filename,
-                self.outdir,
+                source,
+                self.outdir / source.name,
                 force=True,
             )
 
@@ -457,9 +458,10 @@ class LaTeXBuilder(Builder):
         if self.config.latex_logo:
             if not path.isfile(path.join(self.confdir, self.config.latex_logo)):
                 raise SphinxError(__('logo file %r does not exist') % self.config.latex_logo)
+            source = self.confdir / self.config.latex_logo
             copyfile(
-                self.confdir / self.config.latex_logo,
-                self.outdir,
+                source,
+                self.outdir / source.name,
                 force=True,
             )
 

sphinx/builders/texinfo.py

@@ -203,7 +203,11 @@ class TexinfoBuilder(Builder):
         try:
             with progress_message(__('copying Texinfo support files')):
                 logger.info('Makefile ', nonl=True)
-                copyfile(os.path.join(template_dir, 'Makefile'), self.outdir, force=True)
+                copyfile(
+                    os.path.join(template_dir, 'Makefile'),
+                    self.outdir / 'Makefile',
+                    force=True,
+                )
         except OSError as err:
             logger.warning(__("error writing file Makefile: %s"), err)