branch master updated (470573b -> 55eaaae)

[Christopher Baines]

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

    from 470573b  Delete derivation_source_files that are unreferenced
     new 1bdc885  Extract out opening PostgreSQL connections
     new 9723a18  Add some utilities to work with PostgreSQL connections in 
threads
     new 18b6dd9  Stop opening a PostgreSQL connection per request
     new e2e55c6  Rework the shortlived PostgreSQL specific connection channel
     new c3c9c07  Completely rework the way db connections are handled during 
requests
     new 55eaaae  Bump the copyright date in the footer

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:
 .dir-locals.el                                    |    4 +-
 guix-data-service/data-deletion.scm               |   17 +-
 guix-data-service/database.scm                    |  157 ++-
 guix-data-service/utils.scm                       |  102 +-
 guix-data-service/web/build-server/controller.scm |  105 +-
 guix-data-service/web/build/controller.scm        |   61 +-
 guix-data-service/web/compare/controller.scm      |  740 ++++++++------
 guix-data-service/web/controller.scm              |  526 ++++++----
 guix-data-service/web/dumps/controller.scm        |    3 +-
 guix-data-service/web/jobs/controller.scm         |   69 +-
 guix-data-service/web/nar/controller.scm          |  108 +-
 guix-data-service/web/repository/controller.scm   |  411 ++++----
 guix-data-service/web/revision/controller.scm     | 1131 ++++++++++++---------
 guix-data-service/web/server.scm                  |   13 +-
 guix-data-service/web/view/html.scm               |    2 +-
 scripts/guix-data-service.in                      |   14 +-
 16 files changed, 1966 insertions(+), 1497 deletions(-)