From 9d3bc7631b652cb4dc3803d866aee271e1cf3ea4 Mon Sep 17 00:00:00 2001
From: mhucka <mhucka@google.com>
Date: Sat, 29 Nov 2025 02:57:54 +0000
Subject: [PATCH 1/2] Add pytest-cov sysmon flag to pyprompt.toml

As of mid-2025, this feature is available in Python 3.12 and higher, and
is reported to help speed up coverage tests.
---
 pyproject.toml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pyproject.toml b/pyproject.toml
index ce10a28c52f..71c38b52150 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,6 +19,9 @@ include = [
 ]
 omit = ["benchmarks/*"]
 patch = ["subprocess"]
+# Speed up pytest-cov on Python 3.12+ by enabling sys.monitoring if possible.
+core = "sysmon"
+disable_warnings = ["no-sysmon"]
 
 [tool.coverage.report]
 exclude_also = [

From 03d147e86d1539243ff53abb8c87422767ba5982 Mon Sep 17 00:00:00 2001
From: mhucka <mhucka@google.com>
Date: Sat, 29 Nov 2025 03:41:10 +0000
Subject: [PATCH 2/2] Be more selective in directories tested for coverage

By changing `include` and `omit` values for `tool.coverage.run`, we can
limit the files that pytest-cov scans to look foir tests and thereby
gain a slight speedup. (I'm seeing 5% faster times on a Linux system
when running with `-n 32`.)
---
 pyproject.toml | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index 71c38b52150..25d54e95200 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,12 +12,13 @@ extend-exclude = ".*_pb2[.]py[i]?"
 
 [tool.coverage.run]
 include = [
-    # Omit files outside the current working directory.
+    # Include only the directories that have pytest tests in them.
     # Note: this means coverage must be run from the cirq repo root.
     # Failure to do so will result in false positives.
-    "./*",
+    "./cirq-*",
+    "./dev_tools/*",
+    "./examples/*",
 ]
-omit = ["benchmarks/*"]
 patch = ["subprocess"]
 # Speed up pytest-cov on Python 3.12+ by enabling sys.monitoring if possible.
 core = "sysmon"