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-rw-r--r--tvix/derivation/src/write.rs5
1 files changed, 5 insertions, 0 deletions
diff --git a/tvix/derivation/src/write.rs b/tvix/derivation/src/write.rs
index daca5ece2194..8874b5d35a0a 100644
--- a/tvix/derivation/src/write.rs
+++ b/tvix/derivation/src/write.rs
@@ -1,3 +1,8 @@
+//! This module implements the serialisation of derivations into the
+//! [ATerm][] format used by C++ Nix.
+//!
+//! [ATerm]: http://program-transformation.org/Tools/ATermFormat.html
+
 use crate::output::Output;
 use crate::string_escape::escape_string;
 use std::collections::BTreeSet;