tests: tell pip not to check for a newer version

pip will check to see if it's the latest version, and complain if it isn't.
The --no-index flag implies the --disable-pip-version-check flag, and makes
the warning (and any associated network activity) go away.

tests/test-install.t

@@ -1,212 +1,212
 hg debuginstall
   $ hg debuginstall
   checking encoding (ascii)...
   checking Python executable (*) (glob)
   checking Python version (2.*) (glob)
   checking Python lib (*lib*)... (glob)
   checking Python security support (*) (glob)
     TLS 1.2 not supported by Python install; network connections lack modern security (?)
     SNI not supported by Python install; may have connectivity issues with some servers (?)
   checking Mercurial version (*) (glob)
   checking Mercurial custom build (*) (glob)
   checking module policy (*) (glob)
   checking installed modules (*mercurial)... (glob)
   checking registered compression engines (*zlib*) (glob)
   checking available compression engines (*zlib*) (glob)
   checking available compression engines for wire protocol (*zlib*) (glob)
   checking templates (*mercurial?templates)... (glob)
   checking default template (*mercurial?templates?map-cmdline.default) (glob)
   checking commit editor... (* -c "import sys; sys.exit(0)") (glob)
   checking username (test)
   no problems detected
 
 hg debuginstall JSON
   $ hg debuginstall -Tjson | sed 's|\\\\|\\|g'
   [
    {
     "compengines": ["bz2", "bz2truncated", "none", "zlib"*], (glob)
     "compenginesavail": ["bz2", "bz2truncated", "none", "zlib"*], (glob)
     "compenginesserver": [*"zlib"*], (glob)
     "defaulttemplate": "*mercurial?templates?map-cmdline.default", (glob)
     "defaulttemplateerror": null,
     "defaulttemplatenotfound": "default",
     "editor": "* -c \"import sys; sys.exit(0)\"", (glob)
     "editornotfound": false,
     "encoding": "ascii",
     "encodingerror": null,
     "extensionserror": null, (no-pure !)
     "hgmodulepolicy": "*", (glob)
     "hgmodules": "*mercurial", (glob)
     "hgver": "*", (glob)
     "hgverextra": "*", (glob)
     "problems": 0,
     "pythonexe": "*", (glob)
     "pythonlib": "*", (glob)
     "pythonsecurity": [*], (glob)
     "pythonver": "*.*.*", (glob)
     "templatedirs": "*mercurial?templates", (glob)
     "username": "test",
     "usernameerror": null,
     "vinotfound": false
    }
   ]
 
 hg debuginstall with no username
   $ HGUSER= hg debuginstall
   checking encoding (ascii)...
   checking Python executable (*) (glob)
   checking Python version (2.*) (glob)
   checking Python lib (*lib*)... (glob)
   checking Python security support (*) (glob)
     TLS 1.2 not supported by Python install; network connections lack modern security (?)
     SNI not supported by Python install; may have connectivity issues with some servers (?)
   checking Mercurial version (*) (glob)
   checking Mercurial custom build (*) (glob)
   checking module policy (*) (glob)
   checking installed modules (*mercurial)... (glob)
   checking registered compression engines (*zlib*) (glob)
   checking available compression engines (*zlib*) (glob)
   checking available compression engines for wire protocol (*zlib*) (glob)
   checking templates (*mercurial?templates)... (glob)
   checking default template (*mercurial?templates?map-cmdline.default) (glob)
   checking commit editor... (* -c "import sys; sys.exit(0)") (glob)
   checking username...
    no username supplied
    (specify a username in your configuration file)
   1 problems detected, please check your install!
   [1]
 
 path variables are expanded (~ is the same as $TESTTMP)
   $ mkdir tools
   $ touch tools/testeditor.exe
 #if execbit
   $ chmod 755 tools/testeditor.exe
 #endif
   $ hg debuginstall --config ui.editor=~/tools/testeditor.exe
   checking encoding (ascii)...
   checking Python executable (*) (glob)
   checking Python version (*) (glob)
   checking Python lib (*lib*)... (glob)
   checking Python security support (*) (glob)
     TLS 1.2 not supported by Python install; network connections lack modern security (?)
     SNI not supported by Python install; may have connectivity issues with some servers (?)
   checking Mercurial version (*) (glob)
   checking Mercurial custom build (*) (glob)
   checking module policy (*) (glob)
   checking installed modules (*mercurial)... (glob)
   checking registered compression engines (*zlib*) (glob)
   checking available compression engines (*zlib*) (glob)
   checking available compression engines for wire protocol (*zlib*) (glob)
   checking templates (*mercurial?templates)... (glob)
   checking default template (*mercurial?templates?map-cmdline.default) (glob)
   checking commit editor... (* -c "import sys; sys.exit(0)") (glob)
   checking username (test)
   no problems detected
 
 #if test-repo
   $ . "$TESTDIR/helpers-testrepo.sh"
 
   $ cat >> wixxml.py << EOF
   > import os, subprocess, sys
   > import xml.etree.ElementTree as ET
   > 
   > # MSYS mangles the path if it expands $TESTDIR
   > testdir = os.environ['TESTDIR']
   > ns = {'wix' : 'http://schemas.microsoft.com/wix/2006/wi'}
   > 
   > def directory(node, relpath):
   >     '''generator of files in the xml node, rooted at relpath'''
   >     dirs = node.findall('./{%(wix)s}Directory' % ns)
   > 
   >     for d in dirs:
   >         for subfile in directory(d, relpath + d.attrib['Name'] + '/'):
   >             yield subfile
   > 
   >     files = node.findall('./{%(wix)s}Component/{%(wix)s}File' % ns)
   > 
   >     for f in files:
   >         yield relpath + f.attrib['Name']
   > 
   > def hgdirectory(relpath):
   >     '''generator of tracked files, rooted at relpath'''
   >     hgdir = "%s/../mercurial" % (testdir)
   >     args = ['hg', '--cwd', hgdir, 'files', relpath]
   >     proc = subprocess.Popen(args, stdout=subprocess.PIPE,
   >                             stderr=subprocess.PIPE)
   >     output = proc.communicate()[0]
   > 
   >     slash = '/'
   >     for line in output.splitlines():
   >         if os.name == 'nt':
   >             yield line.replace(os.sep, slash)
   >         else:
   >             yield line
   > 
   > tracked = [f for f in hgdirectory(sys.argv[1])]
   > 
   > xml = ET.parse("%s/../contrib/wix/%s.wxs" % (testdir, sys.argv[1]))
   > root = xml.getroot()
   > dir = root.find('.//{%(wix)s}DirectoryRef' % ns)
   > 
   > installed = [f for f in directory(dir, '')]
   > 
   > print('Not installed:')
   > for f in sorted(set(tracked) - set(installed)):
   >     print('  %s' % f)
   > 
   > print('Not tracked:')
   > for f in sorted(set(installed) - set(tracked)):
   >     print('  %s' % f)
   > EOF
 
   $ $PYTHON wixxml.py help
   Not installed:
     help/common.txt
     help/hg-ssh.8.txt
     help/hg.1.txt
     help/hgignore.5.txt
     help/hgrc.5.txt
   Not tracked:
 
   $ $PYTHON wixxml.py templates
   Not installed:
   Not tracked:
 
 #endif
 
 #if virtualenv
 
 Verify that Mercurial is installable with pip. Note that this MUST be
 the last test in this file, because we do some nasty things to the
 shell environment in order to make the virtualenv work reliably.
 
   $ cd $TESTTMP
 Note: --no-site-packages is deprecated, but some places have an
 ancient virtualenv from their linux distro or similar and it's not yet
 the default for them.
   $ unset PYTHONPATH
   $ $PYTHON -m virtualenv --no-site-packages --never-download installenv >> pip.log
 Note: we use this weird path to run pip and hg to avoid platform differences,
 since it's bin on most platforms but Scripts on Windows.
-  $ ./installenv/*/pip install $TESTDIR/.. >> pip.log
+  $ ./installenv/*/pip install --no-index $TESTDIR/.. >> pip.log
   $ ./installenv/*/hg debuginstall || cat pip.log
   checking encoding (ascii)...
   checking Python executable (*) (glob)
   checking Python version (2.*) (glob)
   checking Python lib (*)... (glob)
   checking Python security support (*) (glob)
     TLS 1.2 not supported by Python install; network connections lack modern security (?)
     SNI not supported by Python install; may have connectivity issues with some servers (?)
   checking Mercurial version (*) (glob)
   checking Mercurial custom build (*) (glob)
   checking module policy (*) (glob)
   checking installed modules (*/mercurial)... (glob)
   checking registered compression engines (*) (glob)
   checking available compression engines (*) (glob)
   checking available compression engines for wire protocol (*) (glob)
   checking templates ($TESTTMP/installenv/*/site-packages/mercurial/templates)... (glob)
   checking default template ($TESTTMP/installenv/*/site-packages/mercurial/templates/map-cmdline.default) (glob)
   checking commit editor... (*) (glob)
   checking username (test)
   no problems detected
 #endif