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2021-11-16daemon: Do not deduplicate files smaller than 8 KiB....Files smaller than 8 KiB typically represent ~70% of the entries in
/gnu/store/.links but only contribute to ~4% of the space savings
afforded by deduplication.

Not considering these files for deduplication speeds up file insertion
in the store and, more importantly, leaves 'removeUnusedLinks' with
fewer entries to traverse, thereby speeding it up proportionally.

Partly fixes <https://issues.guix.gnu.org/24937>.

* config-daemon.ac: Remove symlink hard link check and CAN_LINK_SYMLINK
definition.
* guix/store/deduplication.scm (%deduplication-minimum-size): New
variable.
(deduplicate)[loop]: Do not recurse when FILE's size is below
%DEDUPLICATION-MINIMUM-SIZE.
(dump-port): New procedure.
(dump-file/deduplicate)[hash]: Turn into...
[dump-and-compute-hash]: ... this thunk.
Call 'deduplicate' only when SIZE is greater than
%DEDUPLICATION-MINIMUM-SIZE; otherwise call 'dump-port'.
* nix/libstore/gc.cc (LocalStore::removeUnusedLinks): Drop files where
st.st_size < deduplicationMinSize.
* nix/libstore/local-store.hh (deduplicationMinSize): New declaration.
* nix/libstore/optimise-store.cc (deduplicationMinSize): New variable.
(LocalStore::optimisePath_): Return when PATH is a symlink or smaller
than 'deduplicationMinSize'.
* tests/derivations.scm ("identical files are deduplicated"): Produce
files bigger than %DEDUPLICATION-MINIMUM-SIZE.
* tests/nar.scm ("restore-file-set with directories (signed, valid)"):
Likewise.
* tests/store-deduplication.scm ("deduplicate, below %deduplication-minimum-size"):
New test.
("deduplicate", "deduplicate, ENOSPC"): Produce files bigger than
%DEDUPLICATION-MINIMUM-SIZE.
* tests/store.scm ("substitute, deduplication"): Likewise.
Ludovic Courtès
2021-06-18Start enabling substitutes from bordeaux.guix.gnu.org....In addition to substitutes from ci.guix.gnu.org.  There are more changes that
can be made in the future, but these changes seem like a good start.

* config-daemon.ac (guix_substitute_urls): Add https://bordeaux.guix.gnu.org.
* guix/scripts/substitute.scm (%default-substitute-urls): Add
http://bordeaux.guix.gnu.org.
* guix/store.scm (%default-substitute-urls): Add bordeaux.guix.gnu.org.
* doc/guix.texi: Adjust accordingly.
* doc/contributing.texi: Adjust accordingly.
Christopher Baines
2020-12-11maint: Remove unused 'NIX_VERSION' macro....* config-daemon.ac: Do not define NIX_VERSION.
Ludovic Courtès
2020-12-11maint: Avoid macros obsolete in Autoconf 2.70....* configure.ac: Require Autoconf 2.69.  Use 'AS_HELP_STRING' instead of
'AC_HELP_STRING'.
* m4/guix.m4: Likewise.
* config-daemon.ac: Use 'AC_CONFIG_HEADERS' instead of the singular
variant.
Ludovic Courtès
ll keys for all users....Fixes <https://issues.guix.gnu.org/51487>

* gnu/services/ssh.scm (extend-openssh-authorized-keys): ensure that no key is forgotten.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>
Vivien Kraus
2021-06-20services: openssh: Replace 'without-password' by 'prohibit-password'....For some time, OpenSSH's option 'PermitRootLogin' has deprecated the
ambiguous argument 'without-password' with 'prohibit-password'.

* doc/guix.texi (Network Services): Replace 'without-password by
'prohibit-password.
* gnu/machine/digital-ocean.scm (guix-infect): Change system
configuration to use 'prohibit-password.
* gnu/services/ssh.scm (openssh-configuration): Change comment to use
'prohibit-password.
(openssh-config-file): Add support for 'prohibit-password to
'permit-root-login'.  Warn about deprecated 'without-password usage.
* gnu/tests/ganeti.scm (%ganeti-os): Replace 'without-password by
'prohibit-password.

Signed-off-by: Tobias Geerinckx-Rice <me@tobias.gr>
Brice Waegeneire
2020-12-11Revert "services: openssh: Warn about 'password-authentication?' default."...This reverts commit aecd2a13cbd8301d0fdeafcacbf69e12cc3f6138 for two
reasons:

  1. The warning would fire every time (gnu services ssh) is loaded;

  2. There's still no clear consensus on the approach to follow as
     discussed in <https://issues.guix.gnu.org/44808>.
Ludovic Courtès
2020-12-07services: openssh: Warn about 'password-authentication?' default....Fixes <https://bugs.gnu.org/44808>.
Reported by Christopher Lemmer Webber <cwebber@dustycloud.org>.

* gnu/services/ssh.scm (true-but-soon-false): New procedure.
(<openssh-configuration>)[password-authentication?]: Change default to
'true-but-soon-false'.
* gnu/installer/services.scm (%system-services): Explicitly set
'password-authentication?' to #f.
Ludovic Courtès
2020-10-01gnu: Add webssh service....* gnu/services/ssh.scm:
(<webssh-configuration>): New record type.
(%webssh-configuration-nginx, webssh-service-type): New variables.
(webssh-account, webssh-activation, webssh-shepherd-service): New procedures.
* doc/guix.texi: Document this.
Oleg Pykhalov
2020-05-05gnu: Add AutoSSH service....* gnu/services/ssh.scm (<autossh-configuration>): New record type.
(autossh-service-type): New variable.
(autossh-service-activation, autossh-file-name): New procedures.
* doc/guix.texi (Networking Services): Document this.

Signed-off-by: Oleg Pykhalov <go.wigust@gmail.com>
pinoaffe