diff --git a/2024/nix/LICENSE b/2024/nix/LICENSE
new file mode 100644
index 0000000..fdddb29
--- /dev/null
+++ b/2024/nix/LICENSE
@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <https://unlicense.org>
diff --git a/2024/nix/README.md b/2024/nix/README.md
new file mode 100644
index 0000000..1f3c440
--- /dev/null
+++ b/2024/nix/README.md
@@ -0,0 +1,8 @@
+# alexandria lib
+
+This is the Nix code that helps create the document repository. It is free and
+unencumbered software released into the public domain. That means, you are free
+to take it for your own purposes without any attribution or acknowledgement.
+This extends only to the files within this directory (`./nix`) and its
+subdirectories, as well as any other `.nix` files scattered throughout the
+repository.
diff --git a/README.md b/README.md
index 031c3d8..52abff1 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,12 @@ you do it.
 
 Please note, all of my work is licensed under [CC-BY-NC-ND
 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/deed.en) (that's the
-Creative Commons Attribution-Noncommercial-Noderivatives 4.0 license).
+Creative Commons Attribution-Noncommercial-Noderivatives 4.0 license), with one
+exception. The Nix source code that helps provide the document compilation
+infrastructure is free and unencumbered software released into the public
+domain. This includes all of the files in `./2024/nix` as well as any files
+ending in `.nix` generally. See more details in [the source code
+README.](./2024/nix/README.md)
 
 I (and the license) do not grant permission for my work being passed off as
 someone else's (perhaps for the purpose of plagiarism).