Generate release notes for 3.18.1

Author: github-actions[bot]

doc/manual/source/SUMMARY.md.in

@@ -146,6 +146,7 @@
   - [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 3.18.1 (2026-04-23)](release-notes-determinate/v3.18.1.md)
   - [Release 3.18.0 (2026-04-20)](release-notes-determinate/v3.18.0.md)
   - [Release 3.17.3 (2026-04-07)](release-notes-determinate/v3.17.3.md)
   - [Release 3.17.2 (2026-03-27)](release-notes-determinate/v3.17.2.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 3.18.0.<!-- differences -->
+This section lists the differences between upstream Nix 2.33 and Determinate Nix 3.18.1.<!-- differences -->
 
 * In Determinate Nix, flakes are stable. You no longer need to enable the `flakes` experimental feature.
 
@@ -183,3 +183,15 @@ This section lists the differences between upstream Nix 2.33 and Determinate Nix
 * Determinate Nix can upload crash info to Sentry. [DeterminateSystems/nix-src#418](https://github.com/DeterminateSystems/nix-src/pull/418)
 
 * Determinate Nix provides the pre-build hook with a JSON serialization of the derivation. [DeterminateSystems/nix-src#424](https://github.com/DeterminateSystems/nix-src/pull/424)
+
+<!-- Determinate Nix version 3.18.1 -->
+
+* Fix chroot helper with Sentry by @edolstra in [DeterminateSystems/nix-src#433](https://github.com/DeterminateSystems/nix-src/pull/433)
+
+* upload-debug-info-to-sentry.py: Add missing dependencies by @edolstra in [DeterminateSystems/nix-src#434](https://github.com/DeterminateSystems/nix-src/pull/434)
+
+* restoreProcessContext(): Reset Mach exception ports by @edolstra in [DeterminateSystems/nix-src#432](https://github.com/DeterminateSystems/nix-src/pull/432)
+
+* Sync with upstream 2.33.4 by @edolstra in [DeterminateSystems/nix-src#435](https://github.com/DeterminateSystems/nix-src/pull/435)
+
+* sentry: Log the Nix command / subcommand by @edolstra in [DeterminateSystems/nix-src#436](https://github.com/DeterminateSystems/nix-src/pull/436)

doc/manual/source/release-notes-determinate/v3.18.1.md

@@ -0,0 +1,13 @@
+# Release 3.18.1 (2026-04-23)
+
+* Based on [upstream Nix 2.33.4](../release-notes/rl-2.33.md).
+
+## What's Changed
+* Fix chroot helper with Sentry by @edolstra in [DeterminateSystems/nix-src#433](https://github.com/DeterminateSystems/nix-src/pull/433)
+* upload-debug-info-to-sentry.py: Add missing dependencies by @edolstra in [DeterminateSystems/nix-src#434](https://github.com/DeterminateSystems/nix-src/pull/434)
+* restoreProcessContext(): Reset Mach exception ports by @edolstra in [DeterminateSystems/nix-src#432](https://github.com/DeterminateSystems/nix-src/pull/432)
+* Sync with upstream 2.33.4 by @edolstra in [DeterminateSystems/nix-src#435](https://github.com/DeterminateSystems/nix-src/pull/435)
+* sentry: Log the Nix command / subcommand by @edolstra in [DeterminateSystems/nix-src#436](https://github.com/DeterminateSystems/nix-src/pull/436)
+
+
+**Full Changelog**: [v3.18.0...v3.18.1](https://github.com/DeterminateSystems/nix-src/compare/v3.18.0...v3.18.1)