try this

.github/workflows/lock.yml

@@ -9,7 +9,7 @@ jobs:
         github_actions_runner:
           # - "macos-12"
           - "ubuntu-22.04"
-          # - "windows-2022"
+          - "windows-2022"
         python_version:
           # - "3.8"
           # - "3.9"

.tools/boilercv_tools.py

@@ -7,6 +7,7 @@
 from pathlib import Path
 from platform import platform
 from shlex import split
+from shutil import rmtree
 from subprocess import run
 from sys import executable, version_info
 
@@ -66,7 +67,8 @@ def sync():
 
 DEV = Path(".tools/requirements/dev.in")
 NODEPS = Path(".tools/requirements/nodeps.in")
-LOCKFILE = Path(".lock") / (
+PLATFORM_LOCKS = Path(".lock")
+PLATFORM_LOCK = PLATFORM_LOCKS / (
     "_".join(["requirements", RUNNER, PYTHON_VERSION.replace(".", "")]) + ".txt"
 )
 
@@ -96,6 +98,7 @@ def lock(highest: bool = False):
     )
     if lock_result.returncode:
         raise RuntimeError(lock_result.stderr)
+    PLATFORM_LOCKS.mkdir(exist_ok=True, parents=True)
     get_lockfile(highest).write_text(
         encoding="utf-8",
         data="\n".join([
@@ -110,31 +113,35 @@ def lock(highest: bool = False):
 
 @app.command()
 def combine_locks():
+    PLATFORM_LOCKS.mkdir(exist_ok=True, parents=True)
     LOCKS.write_text(
         encoding="utf-8",
         data=json.dumps(
             indent=2,
             obj={
                 lockfile.stem: lockfile.read_text(encoding="utf-8")
-                for lockfile in LOCKS.iterdir()
+                for lockfile in PLATFORM_LOCKS.iterdir()
             },
         )
         + "\n",
     )
 
 
 @app.command()
-def get_lock():
-    LOCKS.parent.mkdir(exist_ok=True, parents=True)
+def get_existing_lock():
+    rmtree(PLATFORM_LOCKS)
+    PLATFORM_LOCKS.mkdir(exist_ok=True, parents=True)
     lockfile = get_lockfile()
     lockfile.write_text(
         encoding="utf-8", data=json.loads(LOCKS.read_text("utf-8"))[lockfile.stem]
     )
 
 
 def get_lockfile(highest: bool = False):
-    LOCKFILE.parent.mkdir(exist_ok=True, parents=True)
-    return LOCKFILE.with_stem(f"{LOCKFILE.stem}_dev" if highest else LOCKFILE.stem)
+    PLATFORM_LOCK.parent.mkdir(exist_ok=True, parents=True)
+    return PLATFORM_LOCK.with_stem(
+        f"{PLATFORM_LOCK.stem}_dev" if highest else PLATFORM_LOCK.stem
+    )
 
 
 @dataclass