This uses the 'replacement' service slot introduced in the Shepherd
version 0.5.0.
* gnu/services/shepherd.scm (shepherd-service-upgrade): Return a list of
services that need to be restarted to complete their upgrade.
* guix/scripts/system.scm (call-with-service-upgrade-info): Rename an internal
variable to reflect the change to shepherd-service-upgrade.
(upgrade-shepherd-services): Call 'load-services/safe' instead of
'load-services'. Print a message about services that need to be
manually restarted.
* gnu/services/herd.scm (load-services/safe): New procedure.
* doc/guix.texi (Invoking guix system): Document the new behaviour.
Co-authored-by: Ludovic Courtès <ludo@gnu.org>
This makes it do the right thing w.r.t. git worktrees.
* guix/git-download.scm (git-file-list): Use REPOSITORY-WORKING-DIRECTORY to
locate checkout. Rename from "top" to "workdir".
Fixes <https://bugs.gnu.org/32600>.
Reported by Leo Famulari.
* guix/store/database.scm (register-items): Check whether TO-REGISTER is
in DB by calling 'path-id', and skip the reset-timestamps,
registration, and deduplication phases when it is.
* guix/store/database.scm (register-items): Add #:log-port. Use
'progress-reporter/bar' to show a progress report.
(register-path): Pass #:log-port to 'register-items'.
* guix/profiles.scm (packages->manifest)[inferiors-loaded?]: New
variable.
[inferior->entry]: New procedure.
Accept inferior packages when INFERIORS-LOADED? is true.
* tests/guix-package.sh: Add test using a manifest with an inferior.
* tests/inferior.scm ("packages->manifest"): New test.
* guix/inferior.scm (inferior-package->manifest-entry): New procedure.
* tests/inferior.scm (manifest-entry->list): New procedure.
("inferior-package->manifest-entry"): New test.
* guix/inferior.scm (<inferior>)[packages, table]: New fields.
(open-inferior): Initialize these new fields.
(inferior-packages): Rename to...
(%inferior-packages): ... this.
(inferior-packages): New procedure; force the promise.
(%inferior-package-table, lookup-inferior-packages): New procedures.
* tests/inferior.scm ("lookup-inferior-packages")
("lookup-inferior-packages and eq?-ness"): New tests.
* guix/inferior.scm (read-inferior-response)
(send-inferior-request): New procedures.
(inferior-eval): Rewrite in terms of these.
(proxy, inferior-package-derivation, inferior-package->derivation)
(package-compiler): New procedures.
* tests/inferior.scm ("inferior-package-derivation"): New test.
The asdf documentation specifies that asdf:load-asd should be preferred to
calling load on a system definition file.
* guix/build/lisp-utils.scm (compile-system): Replace load with asdf:load-asd.
(system-dependencies): Likewise.
(test-system): Likewise.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Add support for dependencies of the form (:version <name> <version>),
(:feature <feature> <dependency-specification>) and (:require <module-name>),
as defined by
<https://common-lisp.net/project/asdf/asdf.html#The-defsystem-grammar>.
* guix/build/lisp-utils.scm (normalize-dependency): New variable.
(make-asd-file)[dependencies]: Use it to generate dependencies with normalized
names.
[dependency-name]: New variable.
[registry]: Use it to flatten the normalized dependencies.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Previously, on machines where /etc/ssl/certs did exist, we'd have this:
$ unset SSL_CERT_DIR
$ unset SSL_CERT_FILE
$ guix pull
Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'...
guix pull: error: Git error: the SSL certificate is invalid
This is because we'd let OpenSSL look for certificates in its default
location, which is an empty directory in its own prefix.
* guix/scripts/pull.scm (honor-x509-certificates): New procedure.
(guix-pull): Use it instead of calling 'honor-lets-encrypt-certificates!'.
Previously a command like:
$(readlink -f ~/.config/guix/current)/bin/guix describe
would succeed without printing anything.
* guix/scripts/describe.scm (display-profile-info): Don't call
'generation-file-name' when NUMBER is zero.
* guix/scripts/pull.scm (display-profile-content): Likewise.
This could result in deadlock in unusual situations, whereby we'd start
waiting for a reply while the query hasn't been flushed to the socket.
* guix/store.scm (buffering-output-port)[flush]: Add call to
'force-output'.
(add-to-store): Add call to 'write-buffered-output'.
* guix/gnupg.scm (%gpgv-command, current-keyring): New variables
(gnupg-verify): Add optional 'keyring' parameter. Use 'gpgv' instead of
'gpg' and pass it '--keyring'.
(gnupg-receive-keys): Add optional 'keyring' parameter and honor it.
(gnupg-verify*): Add #:keyring and honor it.
* guix/scripts/refresh.scm (%options, show-help): Add '--keyring'.
(guix-refresh): Parameterize CURRENT-KEYRING.
* doc/guix.texi (Invoking guix refresh): Document '--keyring' and the
keybox format.
Fixes a regression introduced in
aed0a59405 whereby external channels would
fail to build due to the lack of a (git) module.
Reported by Alex ter Weele on #guix.
* guix/channels.scm (channel-instance-derivations)[guile-gcrypt]:
Remove.
[dependencies]: New variable.
Use it in the 2nd argument to 'build-channel-instance'.
Fixes a regression introduced in
aed0a59405 whereby 'git-predicate' would
throw to 'git-error instead of returning #f as the docstring says.
* guix/git-download.scm (git-predicate): Return #f upon 'git-error'.
Fixes <https://bugs.gnu.org/27925>.
* guix/git-download.scm (files->directory-tree)
(directory-in-tree?): Remove.
(git-file-list): New procedures.
(git-predicate): Use it instead of opening a pipe to 'git'. Remove
directory tree hack and rely exclusively on inode/device numbers.
Reported-by: Ludovic Courtès <ludo@gnu.org>.
* guix/scripts/build.scm (guix-build),
guix/scripts/package.scm (guix-package): Duplicate port before handing it to
build-output-port.
Reported by Pjotr Prins <pjotr.public12@thebird.nl>.
* guix/ui.scm (build-output-port): Add pattern for hash mismatch error; be
more careful with error messages in verbose mode.
Fixes <https://bugs.gnu.org/32686>.
Reported by Oleg Pykhalov <go.wigust@gmail.com>.
* guix/build/profiles.scm (ensure-writable-directory): Add #:symlink.
[absolute?]: New procedure.
[unsymlink]: Use it to determine how to resolve readlink's result.
(build-profile): Pass SYMLINK to 'ensure-writable-directory'.
* tests/profiles.scm ("profile-derivation when etc/ is a relative symlink"):
New test.
* guix/profiles.scm (package->manifest-entry): Add #:properties and
honor it.
* guix/scripts/package.scm (package-provenance)
(package->manifest-entry*): New procedures.
(transaction-upgrade-entry, options->installable): Use
'package->manifest-entry*' instead of 'package->manifest-entry'.
Fixes <https://bugs.gnu.org/32618>.
Reported by Eric Brown <brown@fastmail.com>.
* guix/git.scm (update-cached-checkout): Remove "origin/" from default
REF. Define CANONICAL-REF and use it instead of REF.
(latest-repository-commit): Remove "origin/" from default REF.
* guix/channels.scm (%default-channels): Remove "origin/" from
'branch'.
This fixes a regression introduced in
ca71942445 whereby external channels would
fail to build due to the lack of (gcrypt …) modules.
* guix/channels.scm (channel-instance-derivations): Add 'guile-gcrypt'.
Pass it along CORE to 'build-channel-instance'.
* guix/channels.scm: New file.
* Makefile.am (MODULES): Add it.
* guix/scripts/pull.scm: Use it.
(%default-options): Remove 'repository-url' and 'ref'.
(show-help, %options): Add '--channels'.
(%self-build-file, %pull-version, build-from-source)
(whole-package-for-legacy, derivation->manifest-entry): Remove. These
now exist in a similar form in (guix channels).
(build-and-install): Change 'source' to 'instances'. Remove #:url,
#:branch, and #:commit. Rewrite using 'channel-instances->manifest'.
(channel-list): New procedure.
(guix-pull): Parameterize %REPOSITORY-CACHE-DIRECTORY. Call
'honor-lets-encrypt-certificates!' unconditionally. Load
~/.config/guix/channels.scm. Rewrite to use (guix channels).
[use-le-certs?]: Remove.
* po/guix/POTFILES.in: Add (guix channels).
* doc/guix.texi (Invoking guix pull): Group the description of '--url',
'--commit', and '--branch'. Remove mention of 'GUIX_PULL_URL'. Add
references to "Channels". Document '--channels'.
(Channels): New node.
(Defining Packages): Link to "Channels" instead of "Package Modules".
(Invoking guix edit): Link to "Package Modules" instead of "Defining
Packages".
(Package Modules): Document both GUIX_PACKAGE_PATH and channels.
Fixes a test failure introduced in
de5cbd4a38.
* guix/records.scm (abi-check): Refer to TYPE in an unquoted context so
we get at the RTD.
* tests/records.scm ("ABI checks"): Adjust 'catch' handler to changes
in the 'record-abi-mismatch-error' arguments.
* guix/import/pypi.scm (guess-requirements): Extract "requires.txt" from the
egg-info directory in addition to "requirements.txt"; strip off version
constraints; use call-with-temporary-directory.
Previously, 'display-error' (as used by 'warn-about-load-error', for
instance) would be called with a wrong number of arguments when a
'record-abi-mismatch-error' was caught:
warning: failed to load '(gnu tests install)':
Backtrace:
[...]
ERROR: In procedure display-error:
Wrong number of arguments to #<procedure display-error (_ _ _ _ _ _)>
Now you get warnings and error reports as intended:
warning: failed to load '(gnu tests install)':
In procedure abi-check: <openssh-configuration>: record ABI mismatch; recompilation needed
warning: failed to load '(gnu tests ssh)':
In procedure abi-check: <openssh-configuration>: record ABI mismatch; recompilation needed
* guix/records.scm (print-record-abi-mismatch-error): Remove.
Remove top-level call to 'set-exception-printer!'.
(abi-check): Use arguments as expected by 'display-error'.
The autoload hack was added a year ago, before 0.14.0, i.e., before any
release would depend on Guile-Git. Both 0.14.0 and 0.15.0 required
Guile-Git, and 'guix pull' now automatically pulls it in, so this hack
is no longer necessary.
* guix/scripts/pull.scm: Use (git) and (guix git). Remove top-level
call to 'module-autoload!'.
(ensure-guile-git!): Remove.
(guix-pull): Remove call to 'ensure-guile-git!'.
Previously we'd have lots of useless entries on the search paths, such
as libtasn1, libidn2, zlib, gmp, etc. because they are propagated by
gnutls.
* guix/self.scm (guix-command)[source-directories, object-directories]:
New variables. Use them in the body of "guix-command". Filter their
items with 'file-exists?'.
Fixes <https://bugs.gnu.org/19973>.
Reported by Mark H Weaver <mhw@netris.org>.
* guix/build/debug-link.scm: New file.
* guix/build/graft.scm (%graft-hooks): New variable.
(graft): Add #:hooks and honor it.
* guix/grafts.scm (graft-derivation/shallow): Add (guix build
debug-link) and (guix elf) to #:modules.
* tests/debug-link.scm: New file.
* Makefile.am (MODULES): Add guix/build/debug-link.scm.
(SCM_TESTS): Add tests/debug-link.scm.
This allows "guix refresh" to work for many packages where it would
previously fail with "no updater for PACKAGE".
* guix/import/github.scm (fetch-releases-or-tags): New procedure.
(latest-released-version): Use it instead of calling 'json-fetch'.
Adjust 'hash-ref' call.
The venerable search.cpan.org has retired[0].
[0]: https://log.perl.org/2018/05/goodbye-search-dot-cpan-dot-org.html
* guix/import/cpan.scm (cpan-home): Generate metacpan.org home page URIs.
Update all previously generated ones in (gnu packages) to their
canonical new homes.
Fixes <https://debbugs.gnu.org/32387>.
* guix/import/cabal.scm (eval-cabal): Avoid mis-match when the custom-setup
section cannot be created.
* guix/import/hackage.scm (cabal-custom-setup-dependencies->names): Do not
crash when cabal-package-custom-setup returns #F.
* gnu/packages/python.scm (python-3.6): Rename to ...
(python-3.7): ... this. Update to 3.7.0.
[arguments]: Remove phase 'patch-timestamp-for-pyc-files' and related code.
Add phases to unset SOURCE_DATE_EPOCH during the check phase.
(python-3): Is now PYTHON-3.7.
* guix/build/python-build-system.scm (enable-bytecode-determinism): Don't set
DETERMINISTIC_BUILD.
This is a followup to 30d722c392.
* guix/gexp.scm (imported-files/derivation): Remove
#:deprecation-warnings. Pass "GUILE_WARN_DEPRECATED=no"
unconditionally to #:env-vars of 'gexp->derivation'. Adjust caller.
(imported-files): Remove #:deprecation-warnings and adjust callers.
(imported-modules): Likewise.
(compiled-modules, gexp->derivation): Adjust accordingly.
Threaded compression makes archives non-deterministic: the result depends on
the number of threads used for compressing. See <https://bugs.gnu.org/31015>.
This reverts commit 63102406f2.
Threaded compression makes tarballs non-deterministic: the result depends on
the number of threads used for compressing. See <https://bugs.gnu.org/31015>.
This reverts commit c8a3dea847.
Previously, store items registered in the database by this code (for
instance, store items retrieved by 'guix offload' and passed to
'restore-file-set') would have an mtime of 0 instead of 1.
This would cause problems for things like .go files: Guile would
consider them to be older than the corresponding .scm file, and
consequently it would ignore them and possibly use another (incorrect)
.go file.
Reported by Ricardo Wurmus.
* guix/store/database.scm (reset-timestamps): Pass 1, not 0, to
'utime'.
* tests/store-database.scm ("register-path"): Check the mtime of FILE
and REF.
Fixes <https://bugs.gnu.org/32161>.
Reported by Ricardo Wurmus <rekado@elephly.net>.
This mostly reverts 83099892e0.
* guix/store/deduplication.scm (counting-wrapper-port): New procedure.
(nar-sha256): Use it.
* guix/hash.scm (open-sha256-port)[position]: New variable.
[get-position]: New procedure.
Pass it to 'make-custom-binary-output-port'.
* tests/hash.scm ("open-sha256-port, hello"): Test 'port-position'.
That way, the source of most nodes is now a content-addressed store item
instead of a derivation.
* guix/self.scm (<file-mapping>): New record type.
(file-mapping-compiler): New procedure.
(scheme-node): Use 'file-mapping' instead of 'imported-files'.
(imported-files): Remove.
* guix/gexp.scm (imported-files/derivation): Add #:symlink? and honor
it.
(imported-files): Pass #:symlink? to 'imported-files/derivation'.
* tests/gexp.scm ("imported-files with file-like objects"): Add 'file=?'
and use it instead of calling 'readlink'.
* guix/gexp.scm (gexp->derivation): Add #:import-creates-derivation?.
Pass #:derivation? to 'imported-modules' and 'compiled-modules'. In -L
argument, check whether MODULES is a derivation.
(%not-slash): New variable.
(file-mapping->tree): New procedure.
(imported-files): Rename to...
(imported-files/derivation): ... this.
(imported-files): New procedure. Rewrite in terms of
'interned-file-tree' when possible; add #:derivation? parameter.
(imported-modules, compiled-modules): Add #:derivation? parameter and
pass it to 'imported-files'.
* guix/packages.scm (patch-and-repack): Pass
#:import-creates-derivation? to 'gexp->derivation'.
* tests/gexp.scm ("imported-files"): Adjust to no longer expect a
derivation.
* guix/store.scm (%not-slash): New variable.
(add-file-tree-to-store, interned-file-tree): New procedures.
* tests/store.scm ("add-file-tree-to-store"): New test.
* guix/serialization.scm (write-contents-from-port): New procedure.
(write-contents): Write in terms of 'write-contents-from-port'.
(filter/sort-directory-entries, write-file-tree): New procedures.
(write-file): Rewrite in terms of 'write-file-tree'.
* tests/nar.scm ("write-file-tree + restore-file"): New test.
Previously, if the tests didn't pass, the check phase would evaluate to #f,
but the package would be built sucessfully. This changes all the phases to
raise exceptions if errors are encountered, and return #t otherwise.
This involves using invoke rather than system*, so that exceptions are raised
if the program exits with a status other than 0, and also returning #t at the
end of functions.
* gnu/build/ruby-build-system.scm (unpack): Use invoke rather than system*,
and return #t at the end.
(build, check): Use invoke rather than system*.
(install): Remove the use of "and", and rewrite the error handling to raise an
exception.
(wrap): Return #t.
* guix/scripts/pull.scm (display-profile-news): New procedure.
(build-and-install): Call it.
(display-new/upgraded-packages): Add #:heading and honor it.
Reported by Roel Janssen <roel@gnu.org>
at <https://lists.gnu.org/archive/html/guix-devel/2018-07/msg00036.html>.
* guix/profiles.scm (switch-to-generation): Use (basename generation) as
the symlink target.
* guix/scripts/package.scm (build-and-use-profile): Likewise,
use (basename name) as the symlink target.
* tests/guix-package.sh: Adjust --roll-back test accordingly. Add
explicitly test with '-p foo/prof'.
* guix/import/cabal.scm (eval-cabal): Modify.
* tests/hackage.scm (test-cabal-4): New variable and test.
(test-cabal-5): New variable and test.
(test-cabal-6): New variable and test.
* guix/import/cabal.scm (make-cabal-parser): Modify.
(is-any): New variable.
(is-none): New variable.
(lex-any): New procedure.
(lex-none): New procedure.
(lex-word): Modify.
(eval-cabal): Modify.
Suggested by Mike Gerwitz <mtg@gnu.org>.
* guix/gnu-maintenance.scm (%package-list-url): Use the .rec file.
(%package-description-url): Likewise.
(official-gnu-packages)[read-records]: Skip record descriptors.
Rename fields to use underscores instead of hyphens.
* guix/profiles.scm (profile-search-paths): New procedure.
* guix/scripts/environment.scm (evaluate-search-paths): Remove.
(create-environment): Replace 'paths' with 'manifest'. Use
'profile-search-paths' instead of 'evaluate-search-paths'.
(show-search-paths): Likewise.
(launch-environment): Replace 'paths' with 'manifest'. Make 'pure?' a
keyword parameter.
(launch-environment/fork, launch-environment/container): Likewise.
(guix-environment): Remove 'paths' variable. Adjust callers of the
above procedures accordingly.
* guix/scripts/environment.scm (strip-input-name)
(package+propagated-inputs, package-or-package+output?)
(compact): Remove.
(inputs->profile-derivation): Rename to...
(manifest->derivation): ... this. Replace 'inputs' parameter with
'manifest'.
(input->manifest-entry): New procedure.
(package-environment-inputs): Rewrite to return a list of manifest
entries.
(options/resolve-packages): Rewrite to return a manifest.
(guix-environment): Remove 'inputs'. Define 'paths' in terms of
'manifest-search-paths'.
* guix/profiles.scm (manifest-search-paths): New procedure.
(profile-derivation)[builder]: Use it.
* guix/build/profiles.scm (build-etc/profile): Remove $PATH.
* guix/scripts/container.scm (guix-container):
* guix/scripts/import.scm (guix-import):
* guix/scripts/substitute.scm (guix-substitute): Add -V as the short option
for --version to match show-help's description.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Until now, running "guix pack -s i686-linux" on an x86_64-linux machine,
for instance, would use an x86_64 guile for module derivations. This
was OK until now, but would break when passing "--localstatedir" due to
the introduction of guile-sqlite3: we'd be using the i686 guile-sqlite3
along with the x86_64 guile.
* guix/scripts/pack.scm (guix-pack): Pass the 'system option from OPTS
to 'package-derivation'.
Previously, entries for 'guix.fr.info' would end up in 'dir', above the
'guix.info' entries; consequently, running 'info guix' would actually
open 'guix.fr.info', which was confusing for non-French readers.
* guix/profiles.scm (info-dir-file)[glibc-utf8-locales]: New variable.
[build](info-file-language): New procedure.
(install-info): Use it, to create 'dir.LANG' files.
Set GUIX_LOCPATH.
This reverts commit 24420f5ffa.
This broke 'package-transitive-supported-systems', which would return
the union of supported systems instead of the intersection.
This fixes a regression introduced in
df2f6400b1fbc282ef4d6dd7124ea1c17adc23c2: since the new
'register-path' (actually 'reset-timestamps') would make files
read-only, 'delete-file-recursively' would fail to delete them. Thus,
re-running 'guix system init' on an already-populated store would fail
with a 'delete-file' EPERM.
* guix/scripts/system.scm (copy-item): Use 'lstat' instead of
'file-exists?'. Call 'make-file-writable' on each directory below
DEST.
Previously they'd always be placed next to TO-REPLACE, which would lead
to EPERM in some cases.
* guix/store/deduplication.scm (replace-with-link): Add #:swap-directory
parameter and honor it. Add call to 'make-file-writable'. Catch
'system-error' around 'rename-file'.
(deduplicate): Pass #:swap-directory and remove uses of
'false-if-system-error'.
* tests/store-deduplication.scm ("deduplicate"): Add 'chmod' call.
This version is 13% faster than the one above when timing:
(fold-packages (lambda (p x)
(package-transitive-supported-systems p))
'())
* guix/packages.scm (package-transitive-supported-systems): Make
'systems' a set instead of calling 'lset-intersection' repeatedly.
* guix/self.scm (guix-command): Add #:guile and pass it to 'program-file'.
(whole-package): Add #:guile and pass it to 'guix-command'.
(compiled-guix): Pass #:guile to 'guix-command' and 'whole-package'.
This follows up commit d5b5a15a40 which doesn't
work because %current-system etc expands before the actual build.
Fixes <https://bugs.gnu.org/31719>.
* guix/build-system/meson.scm (meson-build)[builder]: Compare against the
already existing "system" variable rather than (%current-system).
Previously "guix package -s python" would have 'python2-zope-interface' as
its first result (relevance: 10), followed by many other python-*
packages with the same score, while 'python' itself would come
later (relevance: 7).
This change makes 'python' the first result (relevance: 27).
Reported by Gábor Boskovits.
* guix/ui.scm (relevance)[score]: Use 'fold-matches' instead of
'match:count' to counter the number of maches. Give more weight to
exact matches.
Fixes <https://bugs.gnu.org/31983>.
Reported by Fis Trivial <ybbs.daans@hotmail.com>.
* guix/self.scm (specification->package): Add "gnutls" and
"guile2.0-gnutls".
(compiled-guix)[gnutls]: New variable.
[dependencies]: Add it.
Fixes a regression introduced in
c45477d2a1.
Reported by Christopher Baines <mail@cbaines.net>.
* guix/scripts/pack.scm (not-config?, guile-sqlite3&co): New variables.
(self-contained-tarball)[not-config?]: Remove.
[build]: Use GUILE-SQLITE3&CO for 'with-extensions'.
(squashfs-image)[libgcrypt]: New variable.
[build]: Use 'source-module-closure', 'make-config.scm', and
'with-extensions'.
(docker-image)[not-config?]: Remove.
Without this change, running guix pack fails as (guix sets) is missing when
compiling (guix build store-copy).
* guix/scripts/pack.scm (docker-image): Move (guix build store-copy) to within
the source-module-closure call.
This is a followup to d6b5aa0b03.
* guix/self.scm (%config-variables): Remove %CONFIG-DIRECTORY,
%STATE-DIRECTORY, %STORE-DATABASE-DIRECTORY, and %STORE-DIRECTORY.
(make-config.scm): Define them here.
* build-aux/build-self.scm (%config-variables, make-config.scm):
Likewise.
Previously the %CONFIG-VARIABLES list would be generated based on what
the current (guix config) contains. Thus, it would include
'%guix-register-program', which we recently removed, because
existing (guix config) most likely contained that variable. Since its
value could differ from machine to machine, the build farm could be
building a different config.scm, thereby preventing people from getting
substitutes.
* guix/self.scm (%config-variables): Turn into a white list instead of
taking all the remaining variables from the current (guix config).
* build-aux/build-self.scm (%config-variables): Likewise.
* guix/self.scm (guix-command): Add 'compiled-modules' parameter and
honor it.
(whole-package): Likewise.
(compiled-guix)[built-modules]: Turn into a procedure.
When PULL-VERSION is 1, use separate source and compiled modules.
When PULL-VERSION is 0, return a single directory containing both .scm
and .go files.
* guix/utils.scm (target-64bit?): New procedure.
* gnu/packages/samba.scm (ldb)[inputs]: Only add LMDB on 64-bit systems.
[arguments]: Make #:tests? conditional on LMDB availability.
Ludovic Courtès