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# GNU Guix --- Functional package management for GNU
# Copyright © 2023 Maxim Cournoyer <maxim.cournoyer@gmail.com>
#
# This file is part of GNU Guix.
#
# GNU Guix is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or (at
# your option) any later version.
#
# GNU Guix is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

#
# Test the 'guix time-machine' command-line utility.
#

guix time-machine --version

# Visiting a commit older than v1.0.0 fails.
! guix time-machine --commit=v0.15.0

exit 0
handles case with empty hash....Reported by Stephen Paul Weber <singpolyma@singpolyma.net> at <https://lists.gnu.org/archive/html/guix-devel/2023-01/msg00035.html>. * guix/derivations.scm (read-derivation)[outputs->alist]: Treat the empty hash case as non-fixed-output whether or not the hash algorithm is the empty string, and preserve the hash algorithm in <derivation-output>. * tests/derivations.scm ("'download' built-in builder, no fixed-output hash") ("fixed-output-derivation?, no hash", "read-derivation with hash = #f"): New tests. Ludovic Courtès 2022-10-22Remove now unnecessary uses of (guix grafts)....These modules would use (guix grafts) just to access '%graft?' and related bindings, which are now in (guix store). * gnu/ci.scm, guix/gexp.scm, guix/lint.scm, guix/scripts.scm, guix/scripts/archive.scm, guix/scripts/build.scm, guix/scripts/challenge.scm, guix/scripts/deploy.scm, guix/scripts/environment.scm, guix/scripts/home.scm, guix/scripts/pack.scm, guix/scripts/package.scm, guix/scripts/pull.scm, guix/scripts/size.scm, guix/scripts/system.scm, guix/scripts/weather.scm, tests/builders.scm, tests/channels.scm, tests/cpan.scm, tests/derivations.scm, tests/gexp.scm, tests/graph.scm, tests/guix-daemon.sh, tests/monads.scm, tests/pack.scm, tests/packages.scm, tests/profiles.scm, tests/system.scm: Remove #:use-module (guix grafts). Ludovic Courtès 2022-03-07derivations: Coalesce inputs that have the same output path....Fixes <https://issues.guix.gnu.org/54209>. * guix/derivations.scm (coalesce-duplicate-inputs): Use the output paths of DRV as a hash table key. * tests/derivations.scm ("derivation with duplicate fixed-output inputs"): Expect a single input for FINAL. ("derivation with equivalent fixed-output inputs"): New test. Ludovic Courtès 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