branch master updated (a498433 -> 6387f1b)

[Christopher Baines]

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

    from a498433  Implement basic JSON output for the derivation comparison page
     new 1cc5acc  Fix an error with the formatted derivation page
     new b430c63  Create a table for systems
     new 6387f1b  Fetch the list of system values from the database

The 3 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/model/build.scm                  |  7 ++-
 guix-data-service/model/derivation.scm             | 58 ++++++++++++----------
 guix-data-service/model/nar.scm                    | 16 ++++--
 .../package-derivation-by-guix-revision-range.scm  |  4 +-
 guix-data-service/model/package-derivation.scm     | 12 +++--
 guix-data-service/model/package.scm                |  4 +-
 guix-data-service/web/compare/controller.scm       | 17 ++++---
 guix-data-service/web/repository/controller.scm    |  9 ++--
 guix-data-service/web/revision/controller.scm      | 19 +++----
 guix-data-service/web/view/html.scm                |  2 +-
 sqitch/deploy/systems_table.sql                    | 38 ++++++++++++++
 sqitch/revert/systems_table.sql                    |  7 +++
 sqitch/sqitch.plan                                 |  1 +
 .../{rework_builds.sql => systems_table.sql}       |  2 +-
 tests/model-derivation.scm                         |  5 --
 15 files changed, 132 insertions(+), 69 deletions(-)
 create mode 100644 sqitch/deploy/systems_table.sql
 create mode 100644 sqitch/revert/systems_table.sql
 copy sqitch/verify/{rework_builds.sql => systems_table.sql} (51%)