branch master updated (4a9d45a -> c5b504e)

[Christopher Baines]

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

    from 4a9d45a  Skip dropping the log part sequence if there's a lock
     new 6cd3541  Add a faster delete-duplicates function
     new c5b504e  Speed up the finding of missing sources

The 2 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 | 41 ++++++++++++++++++----------------
 guix-data-service/utils.scm            | 24 +++++++++++++++++++-
 2 files changed, 45 insertions(+), 20 deletions(-)