Revert "Fix pytest on macOS in Travis (#5360)"

This reverts commit 5388842e5b.

pytest.ini

@@ -1,2 +0,0 @@
-[pytest]
-addopts = --quiet

tools/install_and_test.sh

@@ -19,5 +19,5 @@ for requirement in "$@" ; do
   if [ $pkg = "." ]; then
     pkg="certbot"
   fi
-  "$(dirname $0)/pytest.sh" --pyargs $pkg
+  pytest --numprocesses auto --quiet --pyargs $pkg
 done

tools/pytest.sh

@@ -1,15 +0,0 @@
-#!/bin/bash
-# Runs pytest with the provided arguments, adding --numprocesses to the command
-# line. This argument is set to "auto" if the environmnent variable TRAVIS is
-# not set, otherwise, it is set to 2. This works around
-# https://github.com/pytest-dev/pytest-xdist/issues/9. Currently every Travis
-# environnment provides two cores. See
-# https://docs.travis-ci.com/user/reference/overview/#Virtualization-environments.
-
-if ${TRAVIS:-false}; then
-    NUMPROCESSES="2"
-else
-    NUMPROCESSES="auto"
-fi
-
-pytest --numprocesses "$NUMPROCESSES" "$@"

tox.cover.sh

@@ -51,8 +51,7 @@ cover () {
   fi
 
   pkg_dir=$(echo "$1" | tr _ -)
-  pytest="$(dirname $0)/tools/pytest.sh"
-  "$pytest" --cov "$pkg_dir" --cov-append --cov-report= --pyargs "$1"
+  pytest --cov "$pkg_dir" --cov-append --cov-report= --numprocesses auto --pyargs "$1"
   coverage report --fail-under="$min" --include="$pkg_dir/*" --show-missing
 }
 

tox.ini

@@ -60,8 +60,6 @@ commands =
 setenv =
     PYTHONPATH = {toxinidir}
     PYTHONHASHSEED = 0
-passenv =
-    TRAVIS
 
 [testenv:py27-oldest]
 commands =
@@ -69,8 +67,6 @@ commands =
 setenv =
     {[testenv]setenv}
     CERTBOT_OLDEST=1
-passenv =
-    {[testenv]passenv}
 
 [testenv:py27-acme-oldest]
 commands =
@@ -123,8 +119,6 @@ basepython = python2.7
 commands =
     {[base]install_packages}
     ./tox.cover.sh
-passenv =
-    {[testenv]passenv}
 
 [testenv:lint]
 basepython = python2.7