one can see in your log: UnicodeDecodeError: 'ascii' codec can't decode byte 0xe1 in position 16: ordinal not in range(128)
this suggests non-ascii chars in some of your paths, or something "interesting" with your locale. Can you try running LC_ALL=C ./sage -i pip to see if this succeeds. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.