make build quieter by default

[arch_o_median]

The following error is not critical to the install process.

Running pycryptopp-0.5.15/setup.py -q bdist_egg --dist-dir /tmp/easy_install-p2hE68/pycryptopp-0.5.15/egg-dist-tmp-8gF_HB

darcs failed:  Not a repository: . (./_darcs/inventory: openBinaryFile: does not exist (No such file or directory))
setup.py darcsver: Failure from attempt to find version tags with 'darcs changes', and pycryptopp/_version.py already exists, so leaving it alone.
gcc: error trying to exec 'cc1plus': execvp: No such file or directory
error: Setup script exited with error: command 'gcc' failed with exit status 1

[zooko]

edited initial comment text to fix wiki formatting

[zooko]

fixed by 69f0d306e75b9bdb. Thanks for the bug report!

[zooko]

Oops, darcsver v1.3.1 and v1.4.0 still emits messages that darcs wrote to stderr. (It just captures messages that darcs wrote to stdout and show those messages only if the --loud option was passed to darcsver.)

Re-opening this ticket. It will be closed when there is a version of darcsver that also hides stderr unless --loud, and that version of darcsver is bundled with Tahoe-LAFS.

[zooko]

Hm, okay darcsver 1.5.0 (​http://pypi.python.org/pypi/darcsver/1.5.0 ) now correctly uses the standard python distutils logging features. However, the standard python distutils logging feature will print out messages that are logged with log.info(), unless you add --quiet, as in python setup.py --quiet darcsver. In other words, the default setting for distutils logging is one level louder than the setting that Brian and Josh and I would probably prefer.

By the way, we've already removed the bundled copy of darcsver from the Tahoe-LAFS source code in 69f0d306e75b9bdb, so now whatever version of darcsver the user already has which is >= 1.2.0 (see setup.py) will be used.

I'm renaming this ticket: in order to avoid these noises when building -- not just darcsver noises but also other noises -- we should figure out how to pass --quiet to the setup.py invocation, possibly by adding --quiet before some of the commands which are aliased in setup.cfg.

[exarkun]

neither darcs nor pycryptopp is involved anymore.