branch master updated (7ab3ea4 -> ecee214)

[David Craven]

dvc pushed a change to branch master
in repository guix.

      from  7ab3ea4   gnu: nss, nss-certs: Update to 3.27.2.
       new  4b3cb7f   build-system: Add cargo build system.
       new  bb3f36e   import: utils: Add some utilities.
       new  3e0c036   import: Add importer for rust crates.
       new  8ac5298   import: Add updater for rust crates.
       new  2289718   gnu: llvm: Enable install utils.
       new  423f9e4   gnu: Add rust bootstrap binaries.
       new  ecee214   gnu: Add rustc.

The 7 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "adds" were already present in the repository and have only
been added to this reference.


Summary of changes:
 Makefile.am                                 |    7 +-
 doc/guix.texi                               |    7 +
 gnu/local.mk                                |    1 +
 gnu/packages/llvm.scm                       |    3 +-
 gnu/packages/rust.scm                       |  266 +++++++++++++++++++++++++++
 guix/build-system/{emacs.scm => cargo.scm}  |  139 +++++++-------
 guix/build/cargo-build-system.scm           |  104 +++++++++++
 guix/import/crate.scm                       |  159 ++++++++++++++++
 guix/import/utils.scm                       |   34 ++++
 guix/scripts/import.scm                     |    2 +-
 guix/scripts/import/{pypi.scm => crate.scm} |   18 +-
 guix/scripts/refresh.scm                    |    4 +-
 tests/crate.scm                             |  102 ++++++++++
 13 files changed, 771 insertions(+), 75 deletions(-)
 create mode 100644 gnu/packages/rust.scm
 copy guix/build-system/{emacs.scm => cargo.scm} (63%)
 create mode 100644 guix/build/cargo-build-system.scm
 create mode 100644 guix/import/crate.scm
 copy guix/scripts/import/{pypi.scm => crate.scm} (85%)
 create mode 100644 tests/crate.scm