We'd like to use a consistent checksum scheme everywhere so that we can:
a) incorporate archive checksums into our specs and have a
consistent hashing algorithm across all specs.
b) index mirrors with a consistent type of checksum, and not one that
is dependent on how spack packages are written.
- [x] convert existing md5, sha224, sha512, sha1 checksums to sha256
- 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
* adding partially completed recipe for phast. will need clapack as dependency
* try to install phast
* seems to still need CLAPCK
* using CLAPACK instead
* phast: updated
* fixed flake8 error
* phast cannot build with clapack built with external blas?
* phast: depend on clapack built without external blas
* fixed flake8 errors
* phast: updated build_directory
