branch master updated (c318f4fcb1 -> b40761ca9d)

[guix-commits]

civodul pushed a change to branch master
in repository guix.

    from c318f4fcb1 gnu: txr: Update to 277.
     new 2a2856d5cc challenge: Actually delete nars that have been extracted.
     new 8918ce6d16 gnu: racket: Avoid use of (ice-9 exceptions).
     new fcad622648 services: guix: Generalize extensions.
     new b40761ca9d gnu: Add python-langcodes.

The 4 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "add" were already present in the repository and have only
been added to this reference.


Summary of changes:
 doc/guix.texi               | 20 ++++++++++++++++++++
 gnu/packages/python-xyz.scm | 29 +++++++++++++++++++++++++++++
 gnu/packages/racket.scm     | 17 ++++++++---------
 gnu/services/base.scm       | 43 +++++++++++++++++++++++++++++++++++++------
 guix/scripts/challenge.scm  | 30 +++++++++++++++++++++++++++---
 5 files changed, 121 insertions(+), 18 deletions(-)