branch master updated (9ff7827 -> 00bfa7e)

[David Thompson]

davexunit pushed a change to branch master
in repository guix.

      from  9ff7827   gnu: nestopia-ue: Use system zlib.
       new  b7d4831   build: container: Add feature test predicates.
       new  00bfa7e   scripts: environment: Display friendly container error 
messages.

The 2 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:
 gnu/build/linux-container.scm |   22 +++++++++++++++++++++-
 guix/scripts/environment.scm  |   18 ++++++++++++++++++
 tests/containers.scm          |    5 +++--
 tests/syscalls.scm            |   11 ++++++++---
 4 files changed, 50 insertions(+), 6 deletions(-)