diff --git a/pkgs/development/python-modules/cirq-ft/default.nix b/pkgs/development/python-modules/cirq-ft/default.nix
index d307191dd9af..a0fbbc40da1f 100644
--- a/pkgs/development/python-modules/cirq-ft/default.nix
+++ b/pkgs/development/python-modules/cirq-ft/default.nix
@@ -7,15 +7,20 @@
 , nbconvert
 , nbformat
 , pytestCheckHook
+, setuptools
 }:
 
 buildPythonPackage rec {
   pname = "cirq-ft";
-  format = "setuptools";
+  pyproject = true;
   inherit (cirq-core) version src meta;
 
   sourceRoot = "${src.name}/${pname}";
 
+  nativeBuildInputs = [
+    setuptools
+  ];
+
   propagatedBuildInputs = [
     attrs
     cachetools
@@ -31,6 +36,11 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
+  disabledTests = [
+    # Upstream doesn't always adjust the version
+    "test_version"
+  ];
+
   # cirq's importlib hook doesn't work here
   #pythonImportsCheck = [ "cirq_ft" ];
 
diff --git a/pkgs/development/python-modules/cirq-google/default.nix b/pkgs/development/python-modules/cirq-google/default.nix
index 4f185c825c34..c2d36a4f796d 100644
--- a/pkgs/development/python-modules/cirq-google/default.nix
+++ b/pkgs/development/python-modules/cirq-google/default.nix
@@ -1,27 +1,23 @@
 { buildPythonPackage
 , cirq-core
+, freezegun
 , google-api-core
 , protobuf
 , pytestCheckHook
-, freezegun
 , pythonRelaxDepsHook
+, setuptools
 }:
 
 buildPythonPackage rec {
   pname = "cirq-google";
-  format = "setuptools";
+  pyproject = true;
   inherit (cirq-core) version src meta;
 
   sourceRoot = "${src.name}/${pname}";
 
-  postPatch = ''
-    substituteInPlace requirements.txt \
-      --replace "google-api-core[grpc] >= 1.14.0, < 2.0.0dev" "google-api-core[grpc] >= 1.14.0, < 3.0.0dev" \
-      --replace "protobuf >= 3.15.0, < 4" "protobuf >= 3.15.0"
-  '';
-
   nativeBuildInputs = [
     pythonRelaxDepsHook
+    setuptools
   ];
 
   propagatedBuildInputs = [
@@ -40,6 +36,8 @@ buildPythonPackage rec {
     "cirq_google/_version_test.py"
     # Trace/BPT trap: 5
     "cirq_google/engine/calibration_test.py"
+    # Very time-consuming
+    "cirq_google/engine/*_test.py"
   ];
 
   disabledTests = [
diff --git a/pkgs/development/python-modules/qcs-api-client/default.nix b/pkgs/development/python-modules/qcs-api-client/default.nix
index 0b38510d6603..60ed1433794a 100644
--- a/pkgs/development/python-modules/qcs-api-client/default.nix
+++ b/pkgs/development/python-modules/qcs-api-client/default.nix
@@ -6,7 +6,7 @@
 , httpx
 , iso8601
 , poetry-core
-, pydantic
+, pydantic_1
 , pyjwt
 , pytest-asyncio
 , pytestCheckHook
@@ -23,7 +23,7 @@
 buildPythonPackage rec {
   pname = "qcs-api-client";
   version = "0.23.1";
-  format = "pyproject";
+  pyproject = true;
 
   disabled = pythonOlder "3.7";
 
@@ -46,6 +46,7 @@ buildPythonPackage rec {
   pythonRelaxDeps = [
     "attrs"
     "httpx"
+    "iso8601"
   ];
 
   nativeBuildInputs = [
@@ -57,7 +58,7 @@ buildPythonPackage rec {
     attrs
     httpx
     iso8601
-    pydantic
+    pydantic_1
     pyjwt
     python-dateutil
     retrying