diff --git a/lix/libexpr/meson.build b/lix/libexpr/meson.build
index 61eee272e..03a61a83e 100644
--- a/lix/libexpr/meson.build
+++ b/lix/libexpr/meson.build
@@ -14,6 +14,7 @@ endforeach
 subdir('flake')
 
 libexpr_setting_definitions = files(
+  # keep-sorted start
   'settings/allow-import-from-derivation.md',
   'settings/allow-unsafe-native-code-during-evaluation.md',
   'settings/allowed-uris.md',
@@ -28,6 +29,7 @@ libexpr_setting_definitions = files(
   'settings/restrict-eval.md',
   'settings/trace-function-calls.md',
   'settings/trace-verbose.md',
+  # keep-sorted end
 )
 libexpr_settings_header = custom_target(
   command : [
@@ -45,6 +47,7 @@ libexpr_settings_header = custom_target(
 )
 
 builtin_definitions = files(
+  # keep-sorted start
   'builtins/abort.md',
   'builtins/add.md',
   'builtins/addDrvOutputDependencies.md',
@@ -145,6 +148,7 @@ builtin_definitions = files(
   'builtins/typeOf.md',
   'builtins/unsafeDiscardOutputDependency.md',
   'builtins/zipAttrsWith.md',
+  # keep-sorted end
 )
 builtins_gen = custom_target(
   command : [
@@ -165,6 +169,7 @@ register_builtins_header = builtins_gen[0]
 builtins_md = builtins_gen[1]
 
 builtin_constant_definitions = files(
+  # keep-sorted start
   'builtin-constants/builtins.md',
   'builtin-constants/currentSystem.md',
   'builtin-constants/currentTime.md',
@@ -175,6 +180,7 @@ builtin_constant_definitions = files(
   'builtin-constants/null.md',
   'builtin-constants/storeDir.md',
   'builtin-constants/true.md',
+  # keep-sorted end
 )
 builtin_constants_gen = custom_target(
   command : [
@@ -194,38 +200,41 @@ register_builtin_constants_header = builtin_constants_gen[0]
 builtin_constants_md = builtin_constants_gen[1]
 
 libexpr_sources = files(
+  # keep-sorted start
   'attr-path.cc',
   'attr-set.cc',
   'eval-cache.cc',
   'eval-error.cc',
   'eval-settings.cc',
   'eval.cc',
-  'function-trace.cc',
-  'get-drvs.cc',
-  'gc-alloc.cc',
-  'json-to-value.cc',
-  'nixexpr.cc',
-  'parser/parser.cc',
-  'primops.cc',
-  'print-ambiguous.cc',
-  'print.cc',
-  'search-path.cc',
-  'value.cc',
-  'value-to-json.cc',
-  'value-to-xml.cc',
   'flake/config.cc',
   'flake/flake.cc',
   'flake/flakeref.cc',
   'flake/lockfile.cc',
+  'function-trace.cc',
+  'gc-alloc.cc',
+  'get-drvs.cc',
+  'json-to-value.cc',
+  'nixexpr.cc',
+  'parser/parser.cc',
+  'primops.cc',
   'primops/context.cc',
   'primops/fetchClosure.cc',
   'primops/fetchMercurial.cc',
   'primops/fetchTree.cc',
   'primops/fromTOML.cc',
+  'print-ambiguous.cc',
+  'print.cc',
+  'search-path.cc',
+  'value-to-json.cc',
+  'value-to-xml.cc',
+  'value.cc',
   'value/context.cc',
+  # keep-sorted end
 )
 
 libexpr_headers = files(
+  # keep-sorted start
   'attr-path.hh',
   'attr-set.hh',
   'eval-cache.hh',
@@ -237,9 +246,9 @@ libexpr_headers = files(
   'flake/flakeref.hh',
   'flake/lockfile.hh',
   'function-trace.hh',
+  'gc-alloc.hh',
   'gc-small-vector.hh',
   'get-drvs.hh',
-  'gc-alloc.hh',
   'json-to-value.hh',
   'nixexpr.hh',
   'parser/change_head.hh',
@@ -254,10 +263,11 @@ libexpr_headers = files(
   'repl-exit-status.hh',
   'search-path.hh',
   'symbol-table.hh',
-  'value/context.hh',
   'value-to-json.hh',
   'value-to-xml.hh',
   'value.hh',
+  'value/context.hh',
+  # keep-sorted end
 )
 
 libexpr = library(
diff --git a/lix/libstore/meson.build b/lix/libstore/meson.build
index fa3d206c2..2b2616d06 100644
--- a/lix/libstore/meson.build
+++ b/lix/libstore/meson.build
@@ -13,12 +13,14 @@ endforeach
 libstore_settings_headers = []
 
 file_transfer_setting_definitions = files(
+  # keep-sorted start
   'file-transfer-settings/connect-timeout.md',
   'file-transfer-settings/download-attempts.md',
   'file-transfer-settings/http-connections.md',
   'file-transfer-settings/http2.md',
   'file-transfer-settings/stalled-download-timeout.md',
   'file-transfer-settings/user-agent-suffix.md',
+  # keep-sorted end
 )
 libstore_settings_headers += custom_target(
   command : [
@@ -36,6 +38,7 @@ libstore_settings_headers += custom_target(
 )
 
 libstore_setting_definitions = files(
+  # keep-sorted start
   'settings/allow-symlinked-store.md',
   'settings/allowed-impure-host-deps.md',
   'settings/always-allow-substitutes.md',
@@ -108,6 +111,7 @@ libstore_setting_definitions = files(
   'settings/use-cgroups.md',
   'settings/use-sqlite-wal.md',
   'settings/use-xdg-base-directories.md',
+  # keep-sorted end
 )
 libstore_settings_headers += custom_target(
   command : [
@@ -125,8 +129,22 @@ libstore_settings_headers += custom_target(
 )
 
 libstore_sources = files(
+  # keep-sorted start
   'binary-cache-store.cc',
   'build-result.cc',
+  'build/child.cc',
+  'build/derivation-goal.cc',
+  'build/drv-output-substitution-goal.cc',
+  'build/entry-points.cc',
+  'build/goal.cc',
+  'build/hook-instance.cc',
+  'build/local-derivation-goal.cc',
+  'build/personality.cc',
+  'build/substitution-goal.cc',
+  'build/worker.cc',
+  'builtins/buildenv.cc',
+  'builtins/fetchurl.cc',
+  'builtins/unpack-channel.cc',
   'common-protocol.cc',
   'content-address.cc',
   'crypto.cc',
@@ -176,24 +194,14 @@ libstore_sources = files(
   'temporary-dir.cc',
   'uds-remote-store.cc',
   'worker-protocol.cc',
-  'build/child.cc',
-  'build/derivation-goal.cc',
-  'build/drv-output-substitution-goal.cc',
-  'build/entry-points.cc',
-  'build/goal.cc',
-  'build/hook-instance.cc',
-  'build/local-derivation-goal.cc',
-  'build/personality.cc',
-  'build/substitution-goal.cc',
-  'build/worker.cc',
-  'builtins/buildenv.cc',
-  'builtins/fetchurl.cc',
-  'builtins/unpack-channel.cc',
+  # keep-sorted end
 )
 
 
 libstore_headers = files(
+  # keep-sorted start
   'binary-cache-store.hh',
+  'build-result.hh',
   'build/child.hh',
   'build/derivation-goal.hh',
   'build/drv-output-substitution-goal.hh',
@@ -203,9 +211,8 @@ libstore_headers = files(
   'build/personality.hh',
   'build/substitution-goal.hh',
   'build/worker.hh',
-  'build-result.hh',
-  'builtins/buildenv.hh',
   'builtins.hh',
+  'builtins/buildenv.hh',
   'common-protocol-impl.hh',
   'common-protocol.hh',
   'content-address.hh',
@@ -253,14 +260,15 @@ libstore_headers = files(
   'serve-protocol-impl.hh',
   'serve-protocol.hh',
   'sqlite.hh',
-  'ssh.hh',
   'ssh-store.hh',
+  'ssh.hh',
   'store-api.hh',
   'store-cast.hh',
   'temporary-dir.hh',
   'uds-remote-store.hh',
   'worker-protocol-impl.hh',
   'worker-protocol.hh',
+  # keep-sorted end
 )
 
 if host_machine.system() == 'linux'
diff --git a/lix/libutil/meson.build b/lix/libutil/meson.build
index 7a93b4981..a78f67e5b 100644
--- a/lix/libutil/meson.build
+++ b/lix/libutil/meson.build
@@ -1,4 +1,5 @@
 libutil_sources = files(
+  # keep-sorted start
   'archive.cc',
   'args.cc',
   'async-io.cc',
@@ -42,23 +43,25 @@ libutil_sources = files(
   'thread-name.cc',
   'thread-pool.cc',
   'unix-domain-socket.cc',
-  'url.cc',
   'url-name.cc',
+  'url.cc',
   'users.cc',
   'xml-writer.cc',
+  # keep-sorted end
 )
 
 libutil_headers = files(
-  'apply-config-options.hh',
+  # keep-sorted start
   'abstract-setting-to-json.hh',
   'ansicolor.hh',
+  'apply-config-options.hh',
   'archive.hh',
-  'args/root.hh',
   'args.hh',
+  'args/root.hh',
   'async-collect.hh',
   'async-io.hh',
-  'async.hh',
   'async-semaphore.hh',
+  'async.hh',
   'backed-string-view.hh',
   'box_ptr.hh',
   'canon-path.hh',
@@ -74,16 +77,16 @@ libutil_headers = files(
   'config-impl.hh',
   'config.hh',
   'current-process.hh',
-  'deprecated-features.hh',
   'deprecated-features-json.hh',
+  'deprecated-features.hh',
   'english.hh',
   'environment-variables.hh',
   'error.hh',
   'escape-char.hh',
   'escape-string.hh',
   'exit.hh',
-  'experimental-features.hh',
   'experimental-features-json.hh',
+  'experimental-features.hh',
   'file-descriptor.hh',
   'file-system.hh',
   'finally.hh',
@@ -93,10 +96,10 @@ libutil_headers = files(
   'hash.hh',
   'hilite.hh',
   'input-accessor.hh',
-  'json.hh',
   'json-fwd.hh',
-  'logging.hh',
+  'json.hh',
   'logging-json.hh',
+  'logging.hh',
   'lru-cache.hh',
   'manually-drop.hh',
   'monitor-fd.hh',
@@ -128,15 +131,17 @@ libutil_headers = files(
   'topo-sort.hh',
   'types.hh',
   'unix-domain-socket.hh',
-  'url-parts.hh',
   'url-name.hh',
+  'url-parts.hh',
   'url.hh',
   'users.hh',
   'variant-wrapper.hh',
   'xml-writer.hh',
+  # keep-sorted end
 )
 
 experimental_feature_definitions = files(
+  # keep-sorted start
   'experimental-features/auto-allocate-uids.md',
   'experimental-features/ca-derivations.md',
   'experimental-features/cgroups.md',
@@ -153,15 +158,18 @@ experimental_feature_definitions = files(
   'experimental-features/read-only-local-store.md',
   'experimental-features/recursive-nix.md',
   'experimental-features/repl-automation.md',
+  # keep-sorted end
 )
 
 deprecated_feature_definitions = files(
+  # keep-sorted start
   'deprecated-features/ancient-let.md',
   'deprecated-features/cr-line-endings.md',
   'deprecated-features/nul-bytes.md',
   'deprecated-features/rec-set-overrides.md',
-  'deprecated-features/url-literals.md',
   'deprecated-features/shadow-internal-symbols.md',
+  'deprecated-features/url-literals.md',
+  # keep-sorted end
 )
 
 experimental_features_gen = custom_target(