Allow parallel mode without arguments (tox-dev#1559)

Allows calling tox with `tox -p` in order to use auto mode. Previously it was mandatory to mention `auto` in order to enable parallel mode. This will not change behavior of tox when called without `-p`, which will still keep the non-parallel mode. Fixes: 1418 Signed-off-by: Sorin Sbarnea <[email protected]>
ssbarnea · Apr 19, 2021 · e610abd · e610abd
1 parent fe48d2f
commit e610abd
Show file tree

Hide file tree

Showing 2 changed files with 4 additions and 1 deletion.
diff --git a/docs/changelog/1418.feature.rst b/docs/changelog/1418.feature.rst
@@ -0,0 +1 @@
+Allow parallel mode without arguments. - by :user:`ssbarnea`
diff --git a/src/tox/config/parallel.py b/src/tox/config/parallel.py
@@ -45,9 +45,11 @@ def add_parallel_flags(parser):
     parser.add_argument(
         "-p",
         "--parallel",
+        nargs="?",
+        const="auto",
         dest="parallel",
         help="run tox environments in parallel, the argument controls limit: all,"
-        " auto - cpu count, some positive number, zero is turn off",
+        " auto or missing argument - cpu count, some positive number, 0 to turn off",
         action="store",
         type=parse_num_processes,
         default=DEFAULT_PARALLEL,
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Allow parallel mode without arguments. - by :user:`ssbarnea`