diff --git a/docs/CMakeLists.txt b/docs/CMakeLists.txt
index cfe574e..31de631 100644
--- a/docs/CMakeLists.txt
+++ b/docs/CMakeLists.txt
@@ -1,24 +1,28 @@
-find_package(Doxygen REQUIRED)
+find_package(Doxygen)
 
-set(DOXYGEN_INPUT_DIR ${PROJECT_SOURCE_DIR}/include)
-set(DOXYGEN_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR}/doxygen)
-set(DOXYGEN_INDEX_FILE ${DOXYGEN_OUTPUT_DIR}/xml/index.xml)
-set(DOXYFILE_IN ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in)
-set(DOXYFILE_OUT ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)
+if(DOXYGEN_FOUND)
 
-configure_file(${DOXYFILE_IN} ${DOXYFILE_OUT} @ONLY)
+  set(DOXYGEN_INPUT_DIR ${PROJECT_SOURCE_DIR}/include)
+  set(DOXYGEN_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR}/doxygen)
+  set(DOXYGEN_INDEX_FILE ${DOXYGEN_OUTPUT_DIR}/xml/index.xml)
+  set(DOXYFILE_IN ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in)
+  set(DOXYFILE_OUT ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)
 
-file(MAKE_DIRECTORY ${DOXYGEN_OUTPUT_DIR})
+  configure_file(${DOXYFILE_IN} ${DOXYFILE_OUT} @ONLY)
 
-add_custom_command(OUTPUT
-  ${DOXYGEN_INDEX_FILE}
-  COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYFILE_OUT}
-  MAIN_DEPENDENCY ${DOXYFILE_OUT} ${DOXYFILE_IN}
-  COMMENT "Generating Doxygen documentation"
-  VERBATIM
-)
+  file(MAKE_DIRECTORY ${DOXYGEN_OUTPUT_DIR})
 
-add_custom_target(docs DEPENDS ${DOXYGEN_INDEX_FILE})
+  add_custom_command(OUTPUT
+    ${DOXYGEN_INDEX_FILE}
+    COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYFILE_OUT}
+    MAIN_DEPENDENCY ${DOXYFILE_OUT} ${DOXYFILE_IN}
+    COMMENT "Generating Doxygen documentation"
+    VERBATIM
+  )
 
-# Ensure worker is built before documentation.
-add_dependencies(docs bootstrap)
+  add_custom_target(docs DEPENDS ${DOXYGEN_INDEX_FILE})
+
+  # Ensure worker is built before documentation.
+  add_dependencies(docs bootstrap)
+
+endif()
diff --git a/flake.nix b/flake.nix
index 18d47af..1f6948c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -24,7 +24,7 @@
             pname = "bootstrap";
             src = ./.;
             version = "0.1.3";
-            nativeBuildInputs = with pkgs; [ cmake ];
+            nativeBuildInputs = with pkgs; [ cmake doxygen ];
             installPhase = ''
               mkdir -p $out/bin
               cp ./bootstrap $out/bin
diff --git a/specs/clang/runner b/specs/clang/runner
index a1c9cad..3566f8e 100755
--- a/specs/clang/runner
+++ b/specs/clang/runner
@@ -56,7 +56,7 @@ mkdir -p "$BUILD"/build/{Debug,Release}
 # REWRITES
 # ============================================================
 
-for file in flake.nix {,src/,test/}CMakeLists.txt
+for file in flake.nix {,src/,docs/,test/}CMakeLists.txt
 do
   sed -i "s/<NAME>/$NAME/g" "$BUILD/$file"
 done
diff --git a/specs/clang/template/docs/CMakeLists.txt b/specs/clang/template/docs/CMakeLists.txt
index cfe574e..9bc649a 100644
--- a/specs/clang/template/docs/CMakeLists.txt
+++ b/specs/clang/template/docs/CMakeLists.txt
@@ -1,24 +1,28 @@
 find_package(Doxygen REQUIRED)
 
-set(DOXYGEN_INPUT_DIR ${PROJECT_SOURCE_DIR}/include)
-set(DOXYGEN_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR}/doxygen)
-set(DOXYGEN_INDEX_FILE ${DOXYGEN_OUTPUT_DIR}/xml/index.xml)
-set(DOXYFILE_IN ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in)
-set(DOXYFILE_OUT ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)
+if(DOXYGEN_FOUND)
 
-configure_file(${DOXYFILE_IN} ${DOXYFILE_OUT} @ONLY)
+  set(DOXYGEN_INPUT_DIR ${PROJECT_SOURCE_DIR}/include)
+  set(DOXYGEN_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR}/doxygen)
+  set(DOXYGEN_INDEX_FILE ${DOXYGEN_OUTPUT_DIR}/xml/index.xml)
+  set(DOXYFILE_IN ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in)
+  set(DOXYFILE_OUT ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)
 
-file(MAKE_DIRECTORY ${DOXYGEN_OUTPUT_DIR})
+  configure_file(${DOXYFILE_IN} ${DOXYFILE_OUT} @ONLY)
 
-add_custom_command(OUTPUT
-  ${DOXYGEN_INDEX_FILE}
-  COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYFILE_OUT}
-  MAIN_DEPENDENCY ${DOXYFILE_OUT} ${DOXYFILE_IN}
-  COMMENT "Generating Doxygen documentation"
-  VERBATIM
-)
+  file(MAKE_DIRECTORY ${DOXYGEN_OUTPUT_DIR})
 
-add_custom_target(docs DEPENDS ${DOXYGEN_INDEX_FILE})
+  add_custom_command(OUTPUT
+    ${DOXYGEN_INDEX_FILE}
+    COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYFILE_OUT}
+    MAIN_DEPENDENCY ${DOXYFILE_OUT} ${DOXYFILE_IN}
+    COMMENT "Generating Doxygen documentation"
+    VERBATIM
+  )
 
-# Ensure worker is built before documentation.
-add_dependencies(docs bootstrap)
+  add_custom_target(docs DEPENDS ${DOXYGEN_INDEX_FILE})
+
+  # Ensure executable is built before documentation.
+  add_dependencies(docs "<NAME>")
+
+endif()