diff --git a/omicron/ssg/output/__init__.py b/omicron/ssg/output/__init__.py
index 3acffc8..5c21e28 100644
--- a/omicron/ssg/output/__init__.py
+++ b/omicron/ssg/output/__init__.py
@@ -1,6 +1,7 @@
 from omicron.ssg.output.output import Output
 from omicron.ssg.output.content import Content, ContentError
 from omicron.ssg.output.factory import create_content, is_content
+from omicron.ssg.output.memory import Memory
 
 __all__ = [
     "Output",
@@ -8,4 +9,5 @@ __all__ = [
     "ContentError",
     "create_content",
     "is_content",
+    "Memory",
 ]
diff --git a/omicron/ssg/output/memory.py b/omicron/ssg/output/memory.py
new file mode 100644
index 0000000..b43e9ca
--- /dev/null
+++ b/omicron/ssg/output/memory.py
@@ -0,0 +1,22 @@
+import logging
+from typing import TYPE_CHECKING
+from omicron.ssg.output.output import Output
+
+log = logging.getLogger(__name__)
+
+if TYPE_CHECKING:
+    from omicron.ssg.site import Site
+else:
+    Site = "omicron.ssg.site.Site"
+
+
+class Memory(Output):
+    def __init__(self, uri: str, content: str):
+        super().__init__(uri)
+        self.content = content
+
+    def write(self, site: Site) -> None:
+        dest = site.output_path / self.uri
+        dest.parent.mkdir(parents=True, exist_ok=True)
+        dest.write_text(self.content, encoding="utf-8")
+        log.debug("Wrote %s", dest)
diff --git a/omicron/ssg/site.py b/omicron/ssg/site.py
index 1a0e1fd..91b9670 100644
--- a/omicron/ssg/site.py
+++ b/omicron/ssg/site.py
@@ -4,7 +4,14 @@ from urllib.parse import urlparse
 from itertools import batched
 from math import ceil
 
-from omicron.ssg.output import Content, ContentError, is_content, create_content
+from omicron.ssg.output import (
+    Output,
+    Content,
+    ContentError,
+    is_content,
+    create_content,
+    Memory,
+)
 from omicron.ssg.markdown import highlight_style
 
 from pathlib import Path
@@ -22,8 +29,9 @@ class Site:
     def __init__(self, site: Path):
         self.site_path = site.absolute()
         self.content: list[Content] = []
+        self.other_outputs: list[Output] = []
         self.by_tag: dict[str, list[Content]] = {}
-        self.by_uri: dict[str, Content] = {}
+        self.by_uri: dict[str, Output] = {}
         self.by_section: dict[str, list[Content]] = {}
         self.tags_by_count: list[tuple[str, int]] = []
 
@@ -84,14 +92,12 @@ class Site:
                 self.by_tag[tag] = []
             self.by_tag[tag].append(content)
 
-    def add_by_uri(self, content: Content) -> None:
-        if content.uri in self.by_uri:
-            conflict = self.by_uri[content.uri]
+    def add_by_uri(self, output: Output) -> None:
+        if output.uri in self.by_uri:
             raise ContentError(
-                f"the file at '{content.source}' maps to the same uri as the "
-                f"file at '{conflict.source}'"
+                f"uri '{output.uri}' is already claimed by another output"
             )
-        self.by_uri[content.uri] = content
+        self.by_uri[output.uri] = output
 
     def update_tags_by_count(self) -> None:
         tags = [(tag, len(items)) for tag, items in self.by_tag.items()]
@@ -100,6 +106,9 @@ class Site:
 
     def discover(self) -> None:
         log.info("Discovering content...")
+        pygments = Memory("pygments.css", highlight_style())
+        self.other_outputs.append(pygments)
+        self.add_by_uri(pygments)
         content_path = self.site_path / "content"
         for file in content_path.rglob("*"):
             if file.is_file() and is_content(file):
@@ -184,9 +193,8 @@ class Site:
             raise ConfigError("base_uri config value must be an absolute path")
         self.discover()
         self.output_path.mkdir(parents=True, exist_ok=True)
-        (self.output_path / "pygments.css").write_text(
-            highlight_style(), encoding="utf-8"
-        )
         for content in self.content:
             content.write(self)
         self.render_indices()
+        for output in self.other_outputs:
+            output.write(self)