branch master updated (4231f11 -> 7936ca2)

[Christopher Baines]

cbaines pushed a change to branch master
in repository data-service.

    from 4231f11  Tweak linking to build servers
     new f15dc5a  Include package details for the package derivation outputs 
JSON
     new 941d1af  Include the revision in the package derivation outputs JSON
     new 83884ed  Add a latest_build_status table
     new e273e22  Switch queries across to use latest_build_status
     new 83f68a8  Display backtraces when exceptions occur for fetching builds
     new 7936ca2  Remove unnecessary join in 
select-outputs-without-known-nar-entries

The 6 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:
 guix-data-service/builds.scm                  | 19 +++++++----
 guix-data-service/model/build-status.scm      | 49 ++++++++++++++++++++++++++-
 guix-data-service/model/build.scm             | 31 ++++-------------
 guix-data-service/model/channel-instance.scm  |  6 +---
 guix-data-service/model/derivation.scm        | 35 +++++++------------
 guix-data-service/model/nar.scm               |  6 ++--
 guix-data-service/model/package.scm           | 12 ++-----
 guix-data-service/model/system-test.scm       |  6 +---
 guix-data-service/web/revision/controller.scm | 12 ++++---
 guix-data-service/web/revision/html.scm       |  3 +-
 sqitch/deploy/create_latest_build_status.sql  | 27 +++++++++++++++
 sqitch/revert/create_latest_build_status.sql  |  7 ++++
 sqitch/sqitch.plan                            |  1 +
 sqitch/verify/create_latest_build_status.sql  |  7 ++++
 14 files changed, 136 insertions(+), 85 deletions(-)
 create mode 100644 sqitch/deploy/create_latest_build_status.sql
 create mode 100644 sqitch/revert/create_latest_build_status.sql
 create mode 100644 sqitch/verify/create_latest_build_status.sql