diff --git a/pkgs/by-name/cw/cwtch-ui/package.nix b/pkgs/by-name/cw/cwtch-ui/package.nix
new file mode 100644
index 000000000000..7a05aa76b53e
--- /dev/null
+++ b/pkgs/by-name/cw/cwtch-ui/package.nix
@@ -0,0 +1,62 @@
+{
+  cwtch,
+  fetchgit,
+  flutter,
+  lib,
+  tor,
+  zenity,
+}:
+let
+  runtimeBinDependencies = [
+    tor
+    zenity
+  ];
+in
+flutter.buildFlutterApplication rec {
+  pname = "cwtch-ui";
+  version = "1.15.1";
+  # This Gitea instance has archive downloads disabled, so: fetchgit
+  src = fetchgit {
+    url = "https://git.openprivacy.ca/cwtch.im/cwtch-ui";
+    rev = "v${version}";
+    hash = "sha256-+UtWhQMhm0UjY0kx3B5TwcBFhUfJma3rpeYls4XWy7I=";
+  };
+
+  # NOTE: The included pubspec.json does not exactly match the upstream
+  # pubspec.lock. With Flutter 3.24, a newer version of material_color_utilities
+  # is required than the upstream locked version. From a checkout of cwtch-ui
+  # 1.15.1, I ran `flutter pub upgrade material_color_utilities` on 2024-10-17.
+  # This upgraded material_color_utilities and its dependencies.
+  pubspecLock = lib.importJSON ./pubspec.json;
+  gitHashes = {
+    flutter_gherkin = "sha256-Y8tR84kkczQPBwh7cGhPFAAqrMZKRfGp/02huPaaQZg=";
+  };
+
+  flutterBuildFlags = [
+    "--dart-define"
+    "BUILD_VER=${version}"
+    "--dart-define"
+    "BUILD_DATE=1980-01-01-00:00"
+  ];
+
+  # These things are added to LD_LIBRARY_PATH, but not PATH
+  runtimeDependencies = [ cwtch ];
+
+  extraWrapProgramArgs = "--prefix PATH : ${lib.makeBinPath runtimeBinDependencies}";
+
+  postInstall = ''
+    mkdir -p $out/share/applications
+    substitute linux/cwtch.template.desktop "$out/share/applications/cwtch.desktop" \
+      --replace-fail PREFIX "$out"
+  '';
+
+  meta = {
+    description = "Messaging app built on the cwtch decentralized, privacy-preserving, multi-party messaging protocol";
+    homepage = "https://cwtch.im/";
+    changelog = "https://docs.cwtch.im/changelog";
+    license = lib.licenses.mit;
+    mainProgram = "cwtch";
+    platforms = [ "x86_64-linux" ];
+    maintainers = [ lib.maintainers.gmacon ];
+  };
+}
diff --git a/pkgs/by-name/cw/cwtch-ui/pubspec.json b/pkgs/by-name/cw/cwtch-ui/pubspec.json
new file mode 100644
index 000000000000..77c46b302138
--- /dev/null
+++ b/pkgs/by-name/cw/cwtch-ui/pubspec.json
@@ -0,0 +1,1245 @@
+{
+  "packages": {
+    "_fe_analyzer_shared": {
+      "dependency": "transitive",
+      "description": {
+        "name": "_fe_analyzer_shared",
+        "sha256": "0b2f2bd91ba804e53a61d757b986f89f1f9eaed5b11e4b2f5a2468d86d6c9fc7",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "67.0.0"
+    },
+    "analyzer": {
+      "dependency": "transitive",
+      "description": {
+        "name": "analyzer",
+        "sha256": "37577842a27e4338429a1cbc32679d508836510b056f1eedf0c8d20e39c1383d",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "6.4.1"
+    },
+    "archive": {
+      "dependency": "transitive",
+      "description": {
+        "name": "archive",
+        "sha256": "cb6a278ef2dbb298455e1a713bda08524a175630ec643a242c399c932a0a1f7d",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "3.6.1"
+    },
+    "args": {
+      "dependency": "transitive",
+      "description": {
+        "name": "args",
+        "sha256": "7cf60b9f0cc88203c5a190b4cd62a99feea42759a7fa695010eb5de1c0b2252a",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "2.5.0"
+    },
+    "async": {
+      "dependency": "transitive",
+      "description": {
+        "name": "async",
+        "sha256": "947bfcf187f74dbc5e146c9eb9c0f10c9f8b30743e341481c1e2ed3ecc18c20c",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "2.11.0"
+    },
+    "boolean_selector": {
+      "dependency": "transitive",
+      "description": {
+        "name": "boolean_selector",
+        "sha256": "6cfb5af12253eaf2b368f07bacc5a80d1301a071c73360d746b7f2e32d762c66",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "2.1.1"
+    },
+    "build": {
+      "dependency": "transitive",
+      "description": {
+        "name": "build",
+        "sha256": "80184af8b6cb3e5c1c4ec6d8544d27711700bc3e6d2efad04238c7b5290889f0",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "2.4.1"
+    },
+    "build_config": {
+      "dependency": "transitive",
+      "description": {
+        "name": "build_config",
+        "sha256": "bf80fcfb46a29945b423bd9aad884590fb1dc69b330a4d4700cac476af1708d1",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "1.1.1"
+    },
+    "build_daemon": {
+      "dependency": "transitive",
+      "description": {
+        "name": "build_daemon",
+        "sha256": "79b2aef6ac2ed00046867ed354c88778c9c0f029df8a20fe10b5436826721ef9",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "4.0.2"
+    },
+    "build_resolvers": {
+      "dependency": "transitive",
+      "description": {
+        "name": "build_resolvers",
+        "sha256": "339086358431fa15d7eca8b6a36e5d783728cf025e559b834f4609a1fcfb7b0a",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "2.4.2"
+    },
+    "build_runner": {
+      "dependency": "direct dev",
+      "description": {
+        "name": "build_runner",
+        "sha256": "644dc98a0f179b872f612d3eb627924b578897c629788e858157fa5e704ca0c7",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "2.4.11"
+    },
+    "build_runner_core": {
+      "dependency": "transitive",
+      "description": {
+        "name": "build_runner_core",
+        "sha256": "e3c79f69a64bdfcd8a776a3c28db4eb6e3fb5356d013ae5eb2e52007706d5dbe",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "7.3.1"
+    },
+    "built_collection": {
+      "dependency": "transitive",
+      "description": {
+        "name": "built_collection",
+        "sha256": "376e3dd27b51ea877c28d525560790aee2e6fbb5f20e2f85d5081027d94e2100",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "5.1.1"
+    },
+    "built_value": {
+      "dependency": "transitive",
+      "description": {
+        "name": "built_value",
+        "sha256": "c7913a9737ee4007efedaffc968c049fd0f3d0e49109e778edc10de9426005cb",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "8.9.2"
+    },
+    "characters": {
+      "dependency": "transitive",
+      "description": {
+        "name": "characters",
+        "sha256": "04a925763edad70e8443c99234dc3328f442e811f1d8fd1a72f1c8ad0f69a605",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "1.3.0"
+    },
+    "checked_yaml": {
+      "dependency": "transitive",
+      "description": {
+        "name": "checked_yaml",
+        "sha256": "feb6bed21949061731a7a75fc5d2aa727cf160b91af9a3e464c5e3a32e28b5ff",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "2.0.3"
+    },
+    "cli_util": {
+      "dependency": "transitive",
+      "description": {
+        "name": "cli_util",
+        "sha256": "c05b7406fdabc7a49a3929d4af76bcaccbbffcbcdcf185b082e1ae07da323d19",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "0.4.1"
+    },
+    "clock": {
+      "dependency": "transitive",
+      "description": {
+        "name": "clock",
+        "sha256": "cb6d7f03e1de671e34607e909a7213e31d7752be4fb66a86d29fe1eb14bfb5cf",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "1.1.1"
+    },
+    "code_builder": {
+      "dependency": "transitive",
+      "description": {
+        "name": "code_builder",
+        "sha256": "f692079e25e7869c14132d39f223f8eec9830eb76131925143b2129c4bb01b37",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "4.10.0"
+    },
+    "collection": {
+      "dependency": "transitive",
+      "description": {
+        "name": "collection",
+        "sha256": "ee67cb0715911d28db6bf4af1026078bd6f0128b07a5f66fb2ed94ec6783c09a",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "1.18.0"
+    },
+    "connectivity_plus": {
+      "dependency": "direct main",
+      "description": {
+        "path": "lib/third_party/connectivity_plus/connectivity_plus",
+        "relative": true
+      },
+      "source": "path",
+      "version": "3.0.6"
+    },
+    "connectivity_plus_platform_interface": {
+      "dependency": "transitive",
+      "description": {
+        "path": "lib/third_party/connectivity_plus/connectivity_plus_platform_interface",
+        "relative": true
+      },
+      "source": "path",
+      "version": "1.2.4"
+    },
+    "console": {
+      "dependency": "transitive",
+      "description": {
+        "name": "console",
+        "sha256": "e04e7824384c5b39389acdd6dc7d33f3efe6b232f6f16d7626f194f6a01ad69a",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "4.1.0"
+    },
+    "convert": {
+      "dependency": "transitive",
+      "description": {
+        "name": "convert",
+        "sha256": "0f08b14755d163f6e2134cb58222dd25ea2a2ee8a195e53983d57c075324d592",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "3.1.1"
+    },
+    "crypto": {
+      "dependency": "direct main",
+      "description": {
+        "name": "crypto",
+        "sha256": "ff625774173754681d66daaf4a448684fb04b78f902da9cb3d308c19cc5e8bab",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "3.0.3"
+    },
+    "cupertino_icons": {
+      "dependency": "direct main",
+      "description": {
+        "name": "cupertino_icons",
+        "sha256": "ba631d1c7f7bef6b729a622b7b752645a2d076dba9976925b8f25725a30e1ee6",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "1.0.8"
+    },
+    "dart_style": {
+      "dependency": "transitive",
+      "description": {
+        "name": "dart_style",
+        "sha256": "99e066ce75c89d6b29903d788a7bb9369cf754f7b24bf70bf4b6d6d6b26853b9",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "2.3.6"
+    },
+    "dbus": {
+      "dependency": "direct main",
+      "description": {
+        "name": "dbus",
+        "sha256": "365c771ac3b0e58845f39ec6deebc76e3276aa9922b0cc60840712094d9047ac",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "0.7.10"
+    },
+    "fake_async": {
+      "dependency": "transitive",
+      "description": {
+        "name": "fake_async",
+        "sha256": "511392330127add0b769b75a987850d136345d9227c6b94c96a04cf4a391bf78",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "1.3.1"
+    },
+    "ffi": {
+      "dependency": "direct main",
+      "description": {
+        "name": "ffi",
+        "sha256": "493f37e7df1804778ff3a53bd691d8692ddf69702cf4c1c1096a2e41b4779e21",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "2.1.2"
+    },
+    "file": {
+      "dependency": "transitive",
+      "description": {
+        "name": "file",
+        "sha256": "5fc22d7c25582e38ad9a8515372cd9a93834027aacf1801cf01164dac0ffa08c",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "7.0.0"
+    },
+    "file_picker": {
+      "dependency": "direct main",
+      "description": {
+        "name": "file_picker",
+        "sha256": "bdfa035a974a0c080576c4c8ed01cdf9d1b406a04c7daa05443ef0383a97bedc",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "5.3.4"
+    },
+    "fixnum": {
+      "dependency": "transitive",
+      "description": {
+        "name": "fixnum",
+        "sha256": "25517a4deb0c03aa0f32fd12db525856438902d9c16536311e76cdc57b31d7d1",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "1.1.0"
+    },
+    "flutter": {
+      "dependency": "direct main",
+      "description": "flutter",
+      "source": "sdk",
+      "version": "0.0.0"
+    },
+    "flutter_driver": {
+      "dependency": "transitive",
+      "description": "flutter",
+      "source": "sdk",
+      "version": "0.0.0"
+    },
+    "flutter_gherkin": {
+      "dependency": "direct dev",
+      "description": {
+        "path": ".",
+        "ref": "main",
+        "resolved-ref": "f05e541bb23b15f140f5afc3d671ed1a11948297",
+        "url": "https://git.openprivacy.ca/openprivacy/flutter_gherkin"
+      },
+      "source": "git",
+      "version": "3.0.0-rc.18"
+    },
+    "flutter_local_notifications": {
+      "dependency": "direct main",
+      "description": {
+        "name": "flutter_local_notifications",
+        "sha256": "5f79a1be5e9fef9ddd7f494532d31851399099f9defc21ebcb1ae4539e8a37f1",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "14.1.5"
+    },
+    "flutter_local_notifications_linux": {
+      "dependency": "transitive",
+      "description": {
+        "name": "flutter_local_notifications_linux",
+        "sha256": "33f741ef47b5f63cc7f78fe75eeeac7e19f171ff3c3df054d84c1e38bedb6a03",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "4.0.0+1"
+    },
+    "flutter_local_notifications_platform_interface": {
+      "dependency": "transitive",
+      "description": {
+        "name": "flutter_local_notifications_platform_interface",
+        "sha256": "340abf67df238f7f0ef58f4a26d2a83e1ab74c77ab03cd2b2d5018ac64db30b7",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "7.1.0"
+    },
+    "flutter_localizations": {
+      "dependency": "direct main",
+      "description": "flutter",
+      "source": "sdk",
+      "version": "0.0.0"
+    },
+    "flutter_plugin_android_lifecycle": {
+      "dependency": "transitive",
+      "description": {
+        "name": "flutter_plugin_android_lifecycle",
+        "sha256": "c6b0b4c05c458e1c01ad9bcc14041dd7b1f6783d487be4386f793f47a8a4d03e",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "2.0.20"
+    },
+    "flutter_test": {
+      "dependency": "transitive",
+      "description": "flutter",
+      "source": "sdk",
+      "version": "0.0.0"
+    },
+    "flutter_web_plugins": {
+      "dependency": "transitive",
+      "description": "flutter",
+      "source": "sdk",
+      "version": "0.0.0"
+    },
+    "frontend_server_client": {
+      "dependency": "transitive",
+      "description": {
+        "name": "frontend_server_client",
+        "sha256": "f64a0333a82f30b0cca061bc3d143813a486dc086b574bfb233b7c1372427694",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "4.0.0"
+    },
+    "fuchsia_remote_debug_protocol": {
+      "dependency": "transitive",
+      "description": "flutter",
+      "source": "sdk",
+      "version": "0.0.0"
+    },
+    "get_it": {
+      "dependency": "transitive",
+      "description": {
+        "name": "get_it",
+        "sha256": "d85128a5dae4ea777324730dc65edd9c9f43155c109d5cc0a69cab74139fbac1",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "7.7.0"
+    },
+    "gherkin": {
+      "dependency": "direct dev",
+      "description": {
+        "name": "gherkin",
+        "sha256": "c3e0c98b305a94ec8c015038529a1c8c6ea3b0953619514e76647407efb66d7f",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "3.1.0"
+    },
+    "glob": {
+      "dependency": "direct main",
+      "description": {
+        "name": "glob",
+        "sha256": "0e7014b3b7d4dac1ca4d6114f82bf1782ee86745b9b42a92c9289c23d8a0ab63",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "2.1.2"
+    },
+    "graphs": {
+      "dependency": "transitive",
+      "description": {
+        "name": "graphs",
+        "sha256": "aedc5a15e78fc65a6e23bcd927f24c64dd995062bcd1ca6eda65a3cff92a4d19",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "2.3.1"
+    },
+    "http": {
+      "dependency": "transitive",
+      "description": {
+        "name": "http",
+        "sha256": "761a297c042deedc1ffbb156d6e2af13886bb305c2a343a4d972504cd67dd938",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "1.2.1"
+    },
+    "http_multi_server": {
+      "dependency": "transitive",
+      "description": {
+        "name": "http_multi_server",
+        "sha256": "97486f20f9c2f7be8f514851703d0119c3596d14ea63227af6f7a481ef2b2f8b",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "3.2.1"
+    },
+    "http_parser": {
+      "dependency": "transitive",
+      "description": {
+        "name": "http_parser",
+        "sha256": "2aa08ce0341cc9b354a498388e30986515406668dbcc4f7c950c3e715496693b",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "4.0.2"
+    },
+    "image": {
+      "dependency": "transitive",
+      "description": {
+        "name": "image",
+        "sha256": "2237616a36c0d69aef7549ab439b833fb7f9fb9fc861af2cc9ac3eedddd69ca8",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "4.2.0"
+    },
+    "integration_test": {
+      "dependency": "transitive",
+      "description": "flutter",
+      "source": "sdk",
+      "version": "0.0.0"
+    },
+    "intl": {
+      "dependency": "direct main",
+      "description": {
+        "name": "intl",
+        "sha256": "d6f56758b7d3014a48af9701c085700aac781a92a87a62b1333b46d8879661cf",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "0.19.0"
+    },
+    "io": {
+      "dependency": "transitive",
+      "description": {
+        "name": "io",
+        "sha256": "2ec25704aba361659e10e3e5f5d672068d332fc8ac516421d483a11e5cbd061e",
+        "url": "https://pub.dev"
+      },
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+        "name": "vector_math",
+        "sha256": "80b3257d1492ce4d091729e3a67a60407d227c27241d6927be0130c98e741803",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "2.1.4"
+    },
+    "vm_service": {
+      "dependency": "transitive",
+      "description": {
+        "name": "vm_service",
+        "sha256": "5c5f338a667b4c644744b661f309fb8080bb94b18a7e91ef1dbd343bed00ed6d",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "14.2.5"
+    },
+    "watcher": {
+      "dependency": "transitive",
+      "description": {
+        "name": "watcher",
+        "sha256": "3d2ad6751b3c16cf07c7fca317a1413b3f26530319181b37e3b9039b84fc01d8",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "1.1.0"
+    },
+    "web": {
+      "dependency": "transitive",
+      "description": {
+        "name": "web",
+        "sha256": "97da13628db363c635202ad97068d47c5b8aa555808e7a9411963c533b449b27",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "0.5.1"
+    },
+    "web_socket": {
+      "dependency": "transitive",
+      "description": {
+        "name": "web_socket",
+        "sha256": "24301d8c293ce6fe327ffe6f59d8fd8834735f0ec36e4fd383ec7ff8a64aa078",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "0.1.5"
+    },
+    "web_socket_channel": {
+      "dependency": "transitive",
+      "description": {
+        "name": "web_socket_channel",
+        "sha256": "a2d56211ee4d35d9b344d9d4ce60f362e4f5d1aafb988302906bd732bc731276",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "3.0.0"
+    },
+    "webdriver": {
+      "dependency": "transitive",
+      "description": {
+        "name": "webdriver",
+        "sha256": "003d7da9519e1e5f329422b36c4dcdf18d7d2978d1ba099ea4e45ba490ed845e",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "3.0.3"
+    },
+    "win32": {
+      "dependency": "transitive",
+      "description": {
+        "name": "win32",
+        "sha256": "a79dbe579cb51ecd6d30b17e0cae4e0ea15e2c0e66f69ad4198f22a6789e94f4",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "5.5.1"
+    },
+    "win_toast": {
+      "dependency": "direct main",
+      "description": {
+        "name": "win_toast",
+        "sha256": "6349ef17a487d2ebf9caa51da1cb5a325f4cd7e5a601935ced456f3c00d1e64f",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "0.0.2"
+    },
+    "window_manager": {
+      "dependency": "direct main",
+      "description": {
+        "name": "window_manager",
+        "sha256": "8699323b30da4cdbe2aa2e7c9de567a6abd8a97d9a5c850a3c86dcd0b34bbfbf",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "0.3.9"
+    },
+    "xdg_directories": {
+      "dependency": "transitive",
+      "description": {
+        "name": "xdg_directories",
+        "sha256": "faea9dee56b520b55a566385b84f2e8de55e7496104adada9962e0bd11bcff1d",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "1.0.4"
+    },
+    "xml": {
+      "dependency": "transitive",
+      "description": {
+        "name": "xml",
+        "sha256": "b015a8ad1c488f66851d762d3090a21c600e479dc75e68328c52774040cf9226",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "6.5.0"
+    },
+    "yaml": {
+      "dependency": "direct main",
+      "description": {
+        "name": "yaml",
+        "sha256": "75769501ea3489fca56601ff33454fe45507ea3bfb014161abc3b43ae25989d5",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "3.1.2"
+    }
+  },
+  "sdks": {
+    "dart": ">=3.4.0 <4.0.0",
+    "flutter": ">=3.22.0"
+  }
+}
diff --git a/pkgs/by-name/cw/cwtch/package.nix b/pkgs/by-name/cw/cwtch/package.nix
new file mode 100644
index 000000000000..bd0b0d836b48
--- /dev/null
+++ b/pkgs/by-name/cw/cwtch/package.nix
@@ -0,0 +1,52 @@
+{
+  buildGoModule,
+  fetchgit,
+  lib,
+}:
+buildGoModule rec {
+  pname = "libcwtch";
+  version = "0.1.3";
+  # This Gitea instance has archive downloads disabled, so: fetchgit
+  src = fetchgit {
+    url = "https://git.openprivacy.ca/cwtch.im/autobindings.git";
+    rev = "v${version}";
+    hash = "sha256-Gp6JnyjKChB7w0fUHkreu81QRXQ3YdMb2ReD/VCkVOE=";
+  };
+
+  vendorHash = "sha256-UgG/yjupUFrfjPZ4E+OM1VsWi9MuMuHxcZ4yvz+q/Y0=";
+  overrideModAttrs = (
+    old: {
+      preBuild = ''
+        make lib.go
+      '';
+    }
+  );
+
+  postPatch = ''
+    substituteInPlace Makefile \
+      --replace-fail '$(shell git describe --tags)' v${version} \
+      --replace-fail '$(shell git log -1 --format=%cd --date=format:%G-%m-%d-%H-%M)' 1980-01-01-00-00
+  '';
+
+  buildPhase = ''
+    runHook preBuild
+    make linux
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+    install -D build/linux/libCwtch.h -t $out/include
+    install -D build/linux/libCwtch.*.so $out/lib/libCwtch.so
+    runHook postInstall
+  '';
+
+  meta = {
+    description = "Decentralized, privacy-preserving, multi-party messaging protocol";
+    homepage = "https://cwtch.im/";
+    changelog = "https://docs.cwtch.im/changelog";
+    license = lib.licenses.mit;
+    platforms = lib.platforms.linux;
+    maintainers = [ lib.maintainers.gmacon ];
+  };
+}