Only respect ALL environments when not in parallel

docs/changelog/2167.bugfix.rst

@@ -0,0 +1 @@
+Fixed handling of ``-e ALL`` in parallel mode by ignoring the ``ALL`` in subprocesses -- by :user:`guahki`.

src/tox/config/__init__.py

@@ -1498,9 +1498,10 @@ def _getenvdata(self, reader, config):
 
         env_list = []
         envlist_explicit = False
-        if (from_option and "ALL" in from_option) or (
-            not from_option and from_environ and "ALL" in from_environ.split(",")
-        ):
+        if (
+            (from_option and "ALL" in from_option)
+            or (not from_option and from_environ and "ALL" in from_environ.split(","))
+        ) and PARALLEL_ENV_VAR_KEY_PRIVATE not in os.environ:
             all_envs = self._getallenvs(reader)
         else:
             candidates = (

tests/unit/config/test_config_parallel.py

@@ -1,5 +1,7 @@
 import pytest
 
+from tox.config.parallel import ENV_VAR_KEY_PRIVATE as PARALLEL_ENV_VAR_KEY_PRIVATE
+
 
 def test_parallel_default(newconfig):
     config = newconfig([], "")
@@ -70,3 +72,17 @@ def test_depends_factor(newconfig):
         """,
     )
     assert config.envconfigs["py"].depends == ("py37-cov", "py37-no", "py36-cov", "py36-no")
+
+
+def test_parallel_env_selection_with_ALL(newconfig, monkeypatch):
+    # Regression test for #2167
+    inisource = """
+        [tox]
+        envlist = py,lint
+    """
+    monkeypatch.setenv(PARALLEL_ENV_VAR_KEY_PRIVATE, "py")
+    config = newconfig(["-eALL"], inisource)
+    assert config.envlist == ["py"]
+    monkeypatch.setenv(PARALLEL_ENV_VAR_KEY_PRIVATE, "lint")
+    config = newconfig(["-eALL"], inisource)
+    assert config.envlist == ["lint"]