branch master updated (211da68 -> af0a06d)

[Christopher Baines]

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

    from 211da68  Handle the case where there are no missing file names
     new d5ab670  Add a chunk! untility
     new 857b4e3  Insert derivation inputs in chunks
     new 3627d36  Select existing derivations in chunks
     new af0a06d  Log the time to read missing derivations from the store

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:
 guix-data-service/model/derivation.scm | 45 ++++++++++++++++++++--------------
 guix-data-service/utils.scm            | 15 +++++++++++-
 2 files changed, 40 insertions(+), 20 deletions(-)