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Support old version of pip installed on Travis, take 2

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This commit is contained in:
vitaut 2015-05-20 11:45:16 -07:00
parent 6955417236
commit fca83df599
1 changed files with 6 additions and 6 deletions
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12
doc/build.py
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@ -9,13 +9,13 @@ def pip_install(package, commit=None):
"Install package using pip."
if commit:
cmd = ['pip', 'show', package.split('/')[1]]
p = Popen(cmd, stdout=PIPE)
output = p.communicate()[0]
p = Popen(cmd, stdout=PIPE, stderr=PIPE)
stdout, stderr = p.communicate()
if p.returncode != 0:
if 'No command by the name pip show' in output:
return # Old version of pip - ignore
raise CalledProcessError(p.returncode, cmd)
if output:
# Check if pip supports the show command.
if 'No command by the name pip show' not in stderr:
raise CalledProcessError(p.returncode, cmd)
elif stdout:
return # Already installed
package = 'git+git://github.com/{0}.git@{1}'.format(package, commit)
check_call(['pip', 'install', '-q', package])