diff --git a/pkgs/by-name/sy/syncall/package.nix b/pkgs/by-name/sy/syncall/package.nix
new file mode 100644
index 000000000000..5ad793b672a2
--- /dev/null
+++ b/pkgs/by-name/sy/syncall/package.nix
@@ -0,0 +1,73 @@
+{ lib
+, python3
+, fetchFromGitHub
+}:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "syncall";
+  version = "1.8.5";
+  format = "pyproject";
+
+  src = fetchFromGitHub {
+    owner = "bergercookie";
+    repo = "syncall";
+    rev = "v${version}";
+    hash = "sha256-f9WVZ1gpVG0wvIqoAkeaYBE4QsGXSqrYS4KyHy6S+0Q=";
+  };
+
+  postPatch = ''
+    substituteInPlace pyproject.toml \
+    --replace-fail 'loguru = "^0.5.3"' 'loguru = "^0.7"' \
+    --replace-fail 'PyYAML = "~5.3.1"' 'PyYAML = "^6.0"' \
+    --replace-fail 'bidict = "^0.21.2"' 'bidict = "^0.23"' \
+    --replace-fail 'typing = "^3.7.4"' '''
+  '';
+
+  nativeBuildInputs = [
+    python3.pkgs.poetry-core
+    python3.pkgs.poetry-dynamic-versioning
+  ];
+
+  propagatedBuildInputs = with python3.pkgs; [
+    bidict
+    bubop
+    click
+    item-synchronizer
+    loguru
+    python-dateutil
+    pyyaml
+    rfc3339
+    typing
+
+    # asana optional-dep
+    asana
+    # caldav optional-dep
+    caldav
+    icalendar
+    # fs optional-dep
+    xattr
+    # gkeep optional-dep
+    # gkeepapi is unavailable in nixpkgs
+    # google optional-dep
+    google-api-python-client
+    google-auth-oauthlib
+    # notion optional-dep
+    # FIXME: notion-client -- broken, doesn't build.
+    # taskwarrior optional-dep
+    taskw-ng
+  ];
+
+  postInstall = ''
+    # We do not support gkeep
+    rm $out/bin/tw_gkeep_sync
+  '';
+
+  pythonImportsCheck = [ "syncall" ];
+
+  meta = with lib; {
+    description = "Bi-directional synchronization between services such as Taskwarrior, Google Calendar, Notion, Asana, and more";
+    homepage = "https://github.com/bergercookie/syncall";
+    license = licenses.mit;
+    maintainers = with maintainers; [ raitobezarius ];
+  };
+}
diff --git a/pkgs/development/python-modules/bubop/default.nix b/pkgs/development/python-modules/bubop/default.nix
new file mode 100644
index 000000000000..72c9737ce7b5
--- /dev/null
+++ b/pkgs/development/python-modules/bubop/default.nix
@@ -0,0 +1,52 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, poetry-core
+, loguru
+, python-dateutil
+, pyyaml
+, tqdm
+, click
+}:
+
+buildPythonPackage rec {
+  pname = "bubop";
+  version = "0.1.12";
+  format = "pyproject";
+
+  src = fetchFromGitHub {
+    owner = "bergercookie";
+    repo = "bubop";
+    rev = "v${version}";
+    hash = "sha256-p4Mv73oX5bsYKby7l0nGon89KyAMIUhDAEKSTNB++Cw=";
+  };
+
+  postPatch = ''
+    # Those versions seems to work with `bubop`.
+    substituteInPlace pyproject.toml \
+    --replace-fail 'loguru = "^0.5.3"' 'loguru = "^0.7"' \
+    --replace-fail 'PyYAML = "~5.3.1"' 'PyYAML = "^6.0"'
+  '';
+
+  nativeBuildInputs = [
+    poetry-core
+  ];
+
+  propagatedBuildInputs = [
+    loguru
+    python-dateutil
+    pyyaml
+    tqdm
+    click
+  ];
+
+  pythonImportsCheck = [ "bubop" ];
+
+  meta = with lib; {
+    description = "Bergercookie's Useful Bits Of Python; helper libraries for Bergercookie's programs";
+    homepage = "https://github.com/bergercookie/bubop";
+    changelog = "https://github.com/bergercookie/bubop/blob/${src.rev}/CHANGELOG.md";
+    license = licenses.mit;
+    maintainers = with maintainers; [ raitobezarius ];
+  };
+}
diff --git a/pkgs/development/python-modules/item-synchronizer/default.nix b/pkgs/development/python-modules/item-synchronizer/default.nix
new file mode 100644
index 000000000000..2f568499eb08
--- /dev/null
+++ b/pkgs/development/python-modules/item-synchronizer/default.nix
@@ -0,0 +1,43 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, poetry-core
+, bidict
+, bubop
+}:
+
+buildPythonPackage rec {
+  pname = "item-synchronizer";
+  version = "1.1.5";
+  format = "pyproject";
+
+  src = fetchFromGitHub {
+    owner = "bergercookie";
+    repo = "item_synchronizer";
+    rev = "v${version}";
+    hash = "sha256-+mviKtCLlJhYV576Q07kcFJvtls5qohKSrqZtBqE/s4=";
+  };
+
+  postPatch = ''
+    substituteInPlace pyproject.toml --replace-fail 'bidict = "^0.21.4"' 'bidict = "^0.23"'
+  '';
+
+  nativeBuildInputs = [
+    poetry-core
+  ];
+
+  propagatedBuildInputs = [
+    bidict
+    bubop
+  ];
+
+  pythonImportsCheck = [ "item_synchronizer" ];
+
+  meta = with lib; {
+    description = "";
+    homepage = "https://github.com/bergercookie/item_synchronizer";
+    changelog = "https://github.com/bergercookie/item_synchronizer/blob/${src.rev}/CHANGELOG.md";
+    license = licenses.mit;
+    maintainers = with maintainers; [ raitobezarius ];
+  };
+}
diff --git a/pkgs/development/python-modules/taskw-ng/default.nix b/pkgs/development/python-modules/taskw-ng/default.nix
new file mode 100644
index 000000000000..28c15922d254
--- /dev/null
+++ b/pkgs/development/python-modules/taskw-ng/default.nix
@@ -0,0 +1,56 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, poetry-core
+, poetry-dynamic-versioning
+, kitchen
+, packaging
+, python-dateutil
+, pytz
+, taskwarrior
+}:
+
+buildPythonPackage rec {
+  pname = "taskw-ng";
+  version = "0.2.6";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "bergercookie";
+    repo = "taskw-ng";
+    rev = "v${version}";
+    hash = "sha256-tlidTt0TzWnvfajYiIfvRv7OfakHY6zWAicmAwq/Z8w=";
+  };
+
+  postPatch = ''
+    substituteInPlace pyproject.toml \
+      --replace-fail 'pytz = "^2023.3.post1"' 'pytz = "*"'
+  '';
+
+  nativeBuildInputs = [
+    poetry-core
+    poetry-dynamic-versioning
+  ];
+
+  propagatedBuildInputs = [
+    kitchen
+    packaging
+    python-dateutil
+    pytz
+  ];
+
+  checkInputs = [
+    taskwarrior
+  ];
+
+  # TODO: doesn't pass because `can_use` fails and `task --version` seems not to be answering.
+  # pythonImportsCheck = [ "taskw_ng" ];
+
+  meta = with lib; {
+    description = "";
+    homepage = "https://github.com/bergercookie/taskw-ng";
+    changelog = "https://github.com/bergercookie/taskw-ng/blob/${src.rev}/CHANGELOG.rst";
+    license = licenses.gpl3Only;
+    maintainers = with maintainers; [ raitobezarius ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 05c01a7cf9ed..eea2739e42d3 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1782,6 +1782,8 @@ self: super: with self; {
 
   btsocket = callPackage ../development/python-modules/btsocket { };
 
+  bubop = callPackage ../development/python-modules/bubop { };
+
   bucketstore = callPackage ../development/python-modules/bucketstore { };
 
   bugsnag = callPackage ../development/python-modules/bugsnag { };
@@ -5905,6 +5907,8 @@ self: super: with self; {
 
   itanium-demangler = callPackage ../development/python-modules/itanium-demangler { };
 
+  item-synchronizer = callPackage ../development/python-modules/item-synchronizer { };
+
   itemadapter = callPackage ../development/python-modules/itemadapter { };
 
   itemdb = callPackage ../development/python-modules/itemdb { };
@@ -14677,6 +14681,8 @@ self: super: with self; {
 
   taskw = callPackage ../development/python-modules/taskw { };
 
+  taskw-ng = callPackage ../development/python-modules/taskw-ng { };
+
   tatsu = callPackage ../development/python-modules/tatsu { };
 
   taxi = callPackage ../development/python-modules/taxi { };