diff --git a/tools/tox_install.sh b/tools/tox_install.sh
deleted file mode 100755
index 20759240..00000000
--- a/tools/tox_install.sh
+++ /dev/null
@@ -1,85 +0,0 @@
-#!/usr/bin/env bash
-
-# Client constraint file contains this client version pin that is in conflict
-# with installing the client from source. We should remove the version pin in
-# the constraints file before applying it for from-source installation.
-# The script also has a secondary purpose to install certain special
-# dependencies directly from git.
-
-# Wrapper for pip install that always uses constraints.
-function pip_install() {
-    pip install -c"$localfile" -U "$@"
-}
-
-# Grab the library from git using either zuul-cloner or pip.  The former is
-# there to a take advantage of the setup done by the gate infrastructure
-# and honour any/all Depends-On headers in the commit message
-function install_from_git() {
-    ZUUL_CLONER=/usr/zuul-env/bin/zuul-cloner
-    GIT_HOST=git.openstack.org
-    PROJ=$1
-    EGG=$2
-
-    edit-constraints "$localfile" -- "$EGG"
-    if [ -x "$ZUUL_CLONER" ]; then
-        SRC_DIR="$VIRTUAL_ENV/src"
-        mkdir -p "$SRC_DIR"
-        cd "$SRC_DIR" >/dev/null
-        ZUUL_CACHE_DIR=${ZUUL_CACHE_DIR:-/opt/git} $ZUUL_CLONER \
-            --branch "$BRANCH_NAME" \
-            "git://$GIT_HOST" "$PROJ"
-        pip_install -e "$PROJ/."
-        cd - >/dev/null
-    else
-        pip_install -e"git+https://$GIT_HOST/$PROJ@$BRANCH_NAME#egg=${EGG}"
-    fi
-}
-
-
-
-CONSTRAINTS_FILE="$1"
-shift 1
-
-# This script will either complete with a return code of 0 or the return code
-# of whatever failed.
-set -e
-
-# NOTE(tonyb): Place this in the tox environment's log dir so it will get
-# published to logs.openstack.org for easy debugging.
-mkdir -p "$VIRTUAL_ENV/log/"
-localfile="$VIRTUAL_ENV/log/upper-constraints.txt"
-
-if [[ "$CONSTRAINTS_FILE" != http* ]]; then
-    CONSTRAINTS_FILE="file://$CONSTRAINTS_FILE"
-fi
-# NOTE(tonyb): need to add curl to bindep.txt if the project supports bindep
-curl "$CONSTRAINTS_FILE" --insecure --progress-bar --output "$localfile"
-
-pip_install openstack-requirements
-
-# This is the main purpose of the script: Allow local installation of
-# the current repo. It is listed in constraints file and thus any
-# install will be constrained and we need to unconstrain it.
-edit-constraints "$localfile" -- "$CLIENT_NAME"
-
-declare -a passthrough_args
-while [ $# -gt 0 ] ; do
-    case "$1" in
-    # If we have any special os:<repo_name:<egg_name> deps then process them
-    os:*)
-        declare -a pkg_spec
-        IFS=: pkg_spec=($1)
-        install_from_git "${pkg_spec[1]}" "${pkg_spec[2]}"
-    ;;
-    # Otherwise just pass the other deps through to the constrained pip install
-    *)
-        passthrough_args+=("$1")
-    ;;
-    esac
-    shift 1
-done
-
-# If *only* had special args then then isn't any need to run pip.
-if [ -n "$passthrough_args" ] ; then
-    pip_install "${passthrough_args[@]}"
-fi
diff --git a/tox.ini b/tox.ini
index 30f261a3..4090c8b9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,16 +10,15 @@ setenv =
     OS_STDOUT_CAPTURE=1
     OS_STDERR_CAPTURE=1
     OS_TEST_TIMEOUT=60
-passenv =
-    ZUUL_CACHE_DIR
 distribute = False
-install_command = {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
+install_command = pip install {opts} {packages}
 commands =
   python setup.py test --coverage --coverage-package-name=cliff --slowest --testr-args='{posargs}'
   coverage report --show-missing
 deps =
+  -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
   -r{toxinidir}/test-requirements.txt
-  .[docs]
+  -r{toxinidir}/requirements.txt
 
 [testenv:pep8]
 deps =