From 020073faee380be9154ce6eeb120fdfa41d06a5d Mon Sep 17 00:00:00 2001
From: Robert Collins <rbtcollins@hp.com>
Date: Mon, 11 May 2015 12:42:26 +1200
Subject: [PATCH] Allow testing with specific pips

We want to use the new resolver branch of pip today, and perhaps
develop in future too. This introduces the same basic change we did to
pbr's tests to test with a custom pip.

Change-Id: Ia2b1a9c7ee7a7bf32f404932fe7fe872ac402b0e
Depends-On: I7600fa20391bb83491d630b277bf01cc3a20727c
---
 tools/integration.sh | 32 +++++++++++++++++++++++---------
 1 file changed, 23 insertions(+), 9 deletions(-)

diff --git a/tools/integration.sh b/tools/integration.sh
index d8818e3b73..7ba417914c 100644
--- a/tools/integration.sh
+++ b/tools/integration.sh
@@ -1,11 +1,17 @@
 #!/bin/bash -xe
+# Parameters
+# PBR_PIP_VERSION :- if not set, run pip's latest release, if set must be a
+#    valid reference file entry describing what pip to use.
+# Bootstrappping the mkenv needs to install *a* pip
+export PIPVERSION=pip
+PIPFLAGS=${PIPFLAGS:-}
 
 function mkvenv {
     venv=$1
 
     rm -rf $venv
     virtualenv $venv
-    $venv/bin/pip install -U pip wheel pbr
+    $venv/bin/pip install -U $PIPVERSION wheel pbr
 }
 
 function install_all_of_gr {
@@ -36,14 +42,22 @@ export WHEELHOUSE=${WHEELHOUSE:-$tmpdir/.wheelhouse}
 export PIP_WHEEL_DIR=${PIP_WHEEL_DIR:-$WHEELHOUSE}
 export PIP_FIND_LINKS=${PIP_FIND_LINKS:-file://$WHEELHOUSE}
 mkvenv $tmpdir/wheelhouse
-# Not all packages properly build wheels (httpretty for example).
-# Do our best but ignore errors when making wheels.
-set +e
-grep -v '^#' $REPODIR/requirements/global-requirements.txt | while read req
-do
-    $tmpdir/wheelhouse/bin/pip wheel "$req"
-done
-set -e
+# Specific PIP version - must succeed to be useful.
+# - build/download a local wheel so we don't hit the network on each venv.
+if [ -n "${PBR_PIP_VERSION:-}" ]; then
+    td=$(mktemp -d)
+    $tmpdir/wheelhouse/bin/pip wheel -w $td $PBR_PIP_VERSION
+    # This version will now be installed in every new venv.
+    export PIPVERSION="$td/$(ls $td)"
+    $tmpdir/wheelhouse/bin/pip install -U $PIPVERSION
+    # We have pip in global-requirements as open-ended requirements,
+    # but since we don't use -U in any other invocations, our version
+    # of pip should be sticky.
+fi
+# Build wheels of everything (that can) to make things faster.
+# pip will try everything, but exits non-zero if any one thing fails.
+$tmpdir/wheelhouse/bin/pip wheel -w $WHEELHOUSE -f $WHEELHOUSE -r \
+    $REPODIR/requirements/global-requirements.txt || true
 
 #BRANCH
 BRANCH=${OVERRIDE_ZUUL_BRANCH=:-master}