Generate release notes for 3.16.1

Author: github-actions[bot]

doc/manual/source/SUMMARY.md.in

@@ -145,6 +145,7 @@
   - [Contributing](development/contributing.md)
 - [Determinate Nix Release Notes](release-notes-determinate/index.md)
   - [Changes between Nix and Determinate Nix](release-notes-determinate/changes.md)<!-- next -->
+  - [Release 3.16.1 (2026-02-22)](release-notes-determinate/v3.16.1.md)
   - [Release 3.16.0 (2026-02-12)](release-notes-determinate/v3.16.0.md)
   - [Release 3.15.2 (2026-01-20)](release-notes-determinate/v3.15.2.md)
   - [Release 3.15.1 (2025-12-24)](release-notes-determinate/v3.15.1.md)

doc/manual/source/release-notes-determinate/changes.md

@@ -1,6 +1,6 @@
 # Changes between Nix and Determinate Nix
 
-This section lists the differences between upstream Nix 2.33 and Determinate Nix 3.16.0.<!-- differences -->
+This section lists the differences between upstream Nix 2.33 and Determinate Nix 3.16.1.<!-- differences -->
 
 * In Determinate Nix, flakes are stable. You no longer need to enable the `flakes` experimental feature.
 
@@ -174,3 +174,19 @@ This section lists the differences between upstream Nix 2.33 and Determinate Nix
 * Add subcommand 'nix provenance show' [DeterminateSystems/nix-src#340](https://github.com/DeterminateSystems/nix-src/pull/340)
 
 * Increase the open file soft limit to the hard limit [DeterminateSystems/nix-src#347](https://github.com/DeterminateSystems/nix-src/pull/347)
+
+<!-- Determinate Nix version 3.16.1 -->
+
+* Upstream C store API improvements by @edolstra in [DeterminateSystems/nix-src#352](https://github.com/DeterminateSystems/nix-src/pull/352)
+
+* Record provenance for unlocked inputs and impure evaluations by @edolstra in [DeterminateSystems/nix-src#354](https://github.com/DeterminateSystems/nix-src/pull/354)
+
+* Add setting narinfo-cache-meta-ttl by @edolstra in [DeterminateSystems/nix-src#355](https://github.com/DeterminateSystems/nix-src/pull/355)
+
+* Add derivationWithMeta builtin by @RossComputerGuy in [DeterminateSystems/nix-src#357](https://github.com/DeterminateSystems/nix-src/pull/357)
+
+* Add builtins.wasi by @edolstra in [DeterminateSystems/nix-src#359](https://github.com/DeterminateSystems/nix-src/pull/359)
+
+* Add `nix provenance verify` command by @edolstra in [DeterminateSystems/nix-src#356](https://github.com/DeterminateSystems/nix-src/pull/356)
+
+* builtins.hashString: Devirtualize lazy paths, and re-enable lazy trees tests by @edolstra in [DeterminateSystems/nix-src#360](https://github.com/DeterminateSystems/nix-src/pull/360)

doc/manual/source/release-notes-determinate/v3.16.1.md

@@ -0,0 +1,15 @@
+# Release 3.16.1 (2026-02-22)
+
+* Based on [upstream Nix 2.33.3](../release-notes/rl-2.33.md).
+
+## What's Changed
+* Upstream C store API improvements by @edolstra in [DeterminateSystems/nix-src#352](https://github.com/DeterminateSystems/nix-src/pull/352)
+* Record provenance for unlocked inputs and impure evaluations by @edolstra in [DeterminateSystems/nix-src#354](https://github.com/DeterminateSystems/nix-src/pull/354)
+* Add setting narinfo-cache-meta-ttl by @edolstra in [DeterminateSystems/nix-src#355](https://github.com/DeterminateSystems/nix-src/pull/355)
+* Add derivationWithMeta builtin by @RossComputerGuy in [DeterminateSystems/nix-src#357](https://github.com/DeterminateSystems/nix-src/pull/357)
+* Add builtins.wasi by @edolstra in [DeterminateSystems/nix-src#359](https://github.com/DeterminateSystems/nix-src/pull/359)
+* Add `nix provenance verify` command by @edolstra in [DeterminateSystems/nix-src#356](https://github.com/DeterminateSystems/nix-src/pull/356)
+* builtins.hashString: Devirtualize lazy paths, and re-enable lazy trees tests by @edolstra in [DeterminateSystems/nix-src#360](https://github.com/DeterminateSystems/nix-src/pull/360)
+
+
+**Full Changelog**: [v3.16.0...v3.16.1](https://github.com/DeterminateSystems/nix-src/compare/v3.16.0...v3.16.1)