Virtualenv / pip installation log?
If you care about keeping the logs, you probably care also about pip's verbose option
-v, --verbose Give more output. Option is additive, and can be used up to 3 times.
When you run the pip, you can specify the logfile.
pip install matplotlib --log LOG_FILE
That file will contain the verbose log
for example,
pip install matplotlib --log log.txt
This will create a log.txt
in the same directory and put the log in that.