[Proposal] Option "-k" to keep source about asdf HOT 3 CLOSED

keep-source support is now in the keep-source branch of asdf and asdf-ruby.

• https://github.com/asdf-vm/asdf/tree/keep-source
• https://github.com/asdf-vm/asdf-ruby/tree/keep-source

Setting KEEP_SOURCE=1 when installing a ruby will preserve the source in ~/.asdf/sources/ruby/<version>

This helped with using ruby with gdb. If I can get getopt working with bash, I'll send a PR after adding the -k option.

EDIT: Comment originally posted from phone. Updated markup.

from asdf.

Nice! I think this would make sense for Python too, I will add the option to my plugin when you are done here!

from asdf.

I think this should actually be the default, and another command is added to cleanup unneeded source & build dirs.

e.g. I just installed Python, but I didnt have sqlite3-devel installed, resulting in

Downloading Python-3.6.7.tar.xz...
-> https://www.python.org/ftp/python/3.6.7/Python-3.6.7.tar.xz
Installing Python-3.6.7...
WARNING: The Python sqlite3 extension was not compiled. Missing the SQLite3 lib?

After installing the devels, asdf needs to refetch everything, and rebuild everything, which is wasted bytes and time.

from asdf.