[bug#70132] [PATCH 00/11] Improve startup time and memory footprint for short-lived commands

[Ludovic Courtès]

Hello!

This is a pretty boring series adding #:autoload in strategic places.
The goal is to avoid loading tons of modules and shared objects when
running ‘guix describe’ or ‘guix shell’ on a cache hit.

There’s a tiny bit of reshuffling to make that easier:

  • Bits moved from (guix channels) to (guix git);

  • ‘call-with-temporary-output-file’ no longer re-exported by
    (guix utils).

I measured the impact with things like:

  strace -e openat -o /tmp/log.strace guix describe
  grep 'openat.*\.go' </tmp/log.strace | wc -l

and also checking specifically whether things like Guile-Git,
Guile-Gcrypt, and Guile-GnuTLS were being loaded.

Feedback welcome!

Ludo’.

Ludovic Courtès (11):
  channels: Use SRFI-71 instead of SRFI-11.
  git: Add ‘repository-info’ and use it in (guix channels).
  channels: Move ‘commit-short-id’ to (guix git).
  git: Add ‘tag->commit’ and use it in (guix channels).
  channels: Autoload (git …) modules.
  guix system: Autoload some more.
  utils: Don’t re-export ‘call-with-temporary-output-file’.
  guix: Delay loading of (gnutls).
  ui: Delay use of (guix build syscalls).
  Autoload (guix build syscalls).
  Autoload (gcrypt hash).

 guix/channels.scm         | 56 +++++++++++++++++----------------------
 guix/derivations.scm      |  6 ++---
 guix/discovery.scm        |  4 +--
 guix/download.scm         |  4 +--
 guix/git.scm              | 52 +++++++++++++++++++++++++++---------
 guix/import/hackage.scm   |  4 +--
 guix/import/hexpm.scm     |  7 ++---
 guix/import/opam.scm      |  7 ++---
 guix/import/pypi.scm      |  5 ++--
 guix/nar.scm              |  4 +--
 guix/packages.scm         |  5 ++--
 guix/scripts.scm          |  7 +++--
 guix/scripts/build.scm    |  4 +--
 guix/scripts/describe.scm |  4 +--
 guix/scripts/system.scm   | 12 ++++++---
 guix/store.scm            | 15 ++++++-----
 guix/ui.scm               | 22 +++------------
 guix/utils.scm            | 17 ++++++------
 tests/cpio.scm            |  6 ++---
 tests/egg.scm             |  5 ++--
 tests/opam.scm            |  5 ++--
 tests/publish.scm         |  5 ++--
 tests/store-database.scm  |  6 ++---
 tests/utils.scm           |  3 ++-
 24 files changed, 143 insertions(+), 122 deletions(-)


base-commit: 16c713083516e60b5ae30b3a8b49d5bf8d4cadc3
-- 
2.41.0