setproctitle: avoid being caught by dask.config; add to test envs (#9202)

All CI failures are unrelated

Author: crusaderky

continuous_integration/environment-3.10.yaml

@@ -44,6 +44,7 @@ dependencies:
   - requests
   - scikit-learn
   - scipy
+  - setproctitle
   - sortedcollections
   - tblib
   - toolz

continuous_integration/environment-3.11.yaml

@@ -38,6 +38,7 @@ dependencies:
   - requests
   - scikit-learn
   - scipy
+  - setproctitle
   - sortedcollections
   - tblib
   - toolz

continuous_integration/environment-3.12.yaml

@@ -38,6 +38,7 @@ dependencies:
   - requests
   - scikit-learn
   - scipy
+  - setproctitle
   - sortedcollections
   - tblib
   - toolz

continuous_integration/environment-3.13.yaml

@@ -37,6 +37,7 @@ dependencies:
   - requests
   - scikit-learn
   - scipy
+  - setproctitle
   - sortedcollections
   - tblib
   - toolz

continuous_integration/environment-3.14.yaml

@@ -37,6 +37,7 @@ dependencies:
   - requests
   - scikit-learn
   - scipy
+  - setproctitle
   - sortedcollections
   - tblib
   - toolz

distributed/proctitle.py

@@ -16,7 +16,7 @@ def enable_proctitle_on_children():
     Enable setting the process title on this process' children and
     grandchildren.
     """
-    os.environ["DASK_PARENT"] = str(os.getpid())
+    os.environ["__DASK_PARENT_PID"] = str(os.getpid())
 
 
 def enable_proctitle_on_current():
@@ -37,7 +37,7 @@ def setproctitle(title):
     enabled = _enabled
     if not enabled:
         try:
-            enabled = int(os.environ.get("DASK_PARENT", "")) != os.getpid()
+            enabled = int(os.environ.get("__DASK_PARENT_PID", "")) != os.getpid()
         except ValueError:  # pragma: no cover
             pass
     if enabled: