build breaks with new virtualenv 1.8.3 on py3 #2761
Description
2320
2321 File "/home/travis/virtualenv/python3.1/build/numpy/build/py3k/numpy/distutils/ccompiler.py", line 458, in CCompiler_get_version
2322
2323 status, output = exec_command(version_cmd,use_tee=0)
2324
2325 File "/home/travis/virtualenv/python3.1/build/numpy/build/py3k/numpy/distutils/exec_command.py", line 197, in exec_command
2326
2327 if _with_python and (0 or sys.__stdout__.fileno()==-1):
2328
2329ValueError: underlying buffer has been detached
I've opened a coressponding issue in venv: pypa/virtualenv#359.
If the numpy team could lend a hand in debugging this, that'd be great.