- remove the old LGPL license headers from all files in Spack - add SPDX headers to all files - core and most packages are (Apache-2.0 OR MIT) - a very small number of remaining packages are LGPL-2.1-only
* add package py-gevent Change-Id: I49722e02a961f20b9177ae8575b78b42bf6c01c9 * fix alignment * add cffi dependency