fix(downstream): fix tox CI detection, devpi deselect, drop conda env hack

- tox: also override GITHUB_ACTIONS=false (is_ci() checks both CI and
  GITHUB_ACTIONS env vars)
- devpi: switch --deselect to --ignore for test_upload.py (deselect
  path didn't match pytest node IDs)
- conda: remove CONDA_CHANNELS override — it fixes NoChannels tests
  but breaks channel-configuration tests; remaining failures are
  upstream conda CI infrastructure issues

Co-authored-by: Cursor AI <ai@cursor.sh>
Co-authored-by: Anthropic Claude Opus 4 <claude@anthropic.com>

Author: 3 people

downstream/recipes/conda.toml

@@ -18,6 +18,3 @@ argv = [
     "-c",
     "set +eu; source dev/start; set -eu; pytest -m 'not integration and not installed'",
 ]
-# Many conda tests create temporary envs that need channels to resolve
-# packages; setting CONDA_CHANNELS provides a sensible default on CI.
-env = { CONDA_CHANNELS = "defaults,conda-forge" }

downstream/recipes/devpi.toml

@@ -18,9 +18,9 @@ argv = ["pytest", "common"]
 argv = ["pytest", "server"]
 
 [[test]]
-# Deselect test_upload: upstream conftest bug compares code=[200,200,200]
+# Ignore test_upload: upstream conftest bug compares code=[200,200,200]
 # against integers, causing TypeError on every upload-with-docs test.
-argv = ["pytest", "client", "--deselect=client/testing/test_upload.py"]
+argv = ["pytest", "client", "--ignore=client/testing/test_upload.py"]
 
 [[test]]
 argv = ["pytest", "web"]

downstream/recipes/tox.toml

@@ -14,6 +14,7 @@ groups = ["test"]
 
 [[test]]
 argv = ["pytest"]
-# tox detects CI=true and enables list_dependencies by default, inserting
-# extra "freeze" steps that its own test expectations don't account for.
-env = { CI = "false" }
+# tox's is_ci() checks CI, GITHUB_ACTIONS, and many other env vars;
+# all must be unset/false so list_dependencies defaults to False and
+# test expectations (no freeze steps, spinner enabled, etc.) hold.
+env = { CI = "false", GITHUB_ACTIONS = "false" }