Commit Graph

923 Commits

Author SHA1 Message Date
Ludovic Courtès 0649321d91
guix system: Add 'search' command.
* guix/scripts/system.scm (resolve-subcommand): New procedure.
(process-command): Handle 'search'.
(guix-system): Likewise.
(show-help): Augment.
* guix/scripts/system/search.scm: New file.
* po/guix/POTFILES.in: Add it.
* Makefile.am (MODULES): Add it.
* guix/ui.scm (%text-width): Export.
* doc/guix.texi (Invoking guix system): Document it.
(Service Types and Services): Mention 'guix system search'.
* tests/guix-system.sh: Test it.
2017-09-16 17:47:46 +02:00
Ludovic Courtès 8f3b63b5d7
uuid: Move tests to 'tests/uuid.scm'.
* tests/file-systems.scm ("uuid->string", "string->uuid")
("uuid", "uuid, syntax error"): Move to...
* tests/uuid.scm: ... here.  New file.
("uuid, ISO-9660, format preserved"): New test.
2017-09-14 00:10:13 +02:00
Ludovic Courtès 2ed1f4a52d
uuid: Adjust tests.
This is a followup to 9b336338cd.

* tests/file-systems.scm ("uuid"): Add call to 'uuid-bytevector'.
("uuid, syntax error"): Add 'dce to the expected form.
2017-09-14 00:10:13 +02:00
Ludovic Courtès 79e5e00f4f
import: cpan: Adjust expected license in tests.
This is a followup to 01ef804d69.

* tests/cpan.scm ("cpan->guix-package"): Expect 'perl-license'.
2017-09-14 00:10:13 +02:00
Ludovic Courtès a9468b422b
substitute: Download from unauthorized sources that provide the right content.
This allows substitutes to be downloaded from unauthorized servers, as
long as they advertise the same hash and references as one of the
authorized servers.

* guix/scripts/substitute.scm (assert-valid-narinfo): Remove.
(valid-narinfo?): Add #:verbose?.  Handle each case of
'signature-case'.
(equivalent-narinfo?): New procedure.
(lookup-narinfos/diverse): Add 'authorized?' parameter and honor it.
[select-hit]: New procedure.
(lookup-narinfo): Add 'authorized?' parameter and pass it.
(process-query): Adjust callers accordingly.
(process-substitution): Remove call to 'assert-valid-narinfo'.  Check
whether 'lookup-narinfo' returns true and call 'leave' if not.
* tests/substitute.scm (%main-substitute-directory)
(%alternate-substitute-directory): New variables.
(call-with-narinfo): Make 'narinfo-directory' a parameter.  Call
'mkdir-p' to create it.  Change unwind handler to check whether
CACHE-DIRECTORY exists before deleting it.
(with-narinfo*): New macro.
("substitute, no signature")
("substitute, invalid hash")
("substitute, unauthorized key"): Change expected error message to "no
valid substitute".
("substitute, unauthorized narinfo comes first")
("substitute, unsigned narinfo comes first")
("substitute, first narinfo is unsigned and has wrong hash")
("substitute, first narinfo is unsigned and has wrong refs")
("substitute, unsigned narinfo comes first")
("substitute, two invalid narinfos"): New tests.
* doc/guix.texi (Substitutes): Explain the new behavior.
2017-09-11 11:10:21 +02:00
Ludovic Courtès 218f6eccaf
substitute: Make substitute URLs a SRFI-39 parameter.
* guix/scripts/substitute.scm (%cache-urls): Rename to...
(%default-substitute-urls): ... this.
(substitute-urls): New variable.
(guix-substitute): Use it instead of %CACHE-URLS.
* tests/substitute.scm: Likewise.
2017-09-11 11:10:21 +02:00
Ludovic Courtès 94e86a6b67
graft: Correctly replace references near the end of the scan buffer.
Fixes <http://bugs.gnu.org/28212>.
Reported by Leo Famulari <leo@famulari.name>.

* guix/build/graft.scm (replace-store-references): When I >= END, check
whether WRITTEN > END and call 'get-bytevector-n!' when it is.
* tests/grafts.scm (buffer-size): New variable.
("replace-store-references, <http://bugs.gnu.org/28212>"): New test.
2017-08-24 23:55:51 +02:00
Andy Wingo 045ebb3e58
gnu: bootloader: Deprecate "device" field in favor of "target".
* gnu/bootloader.scm (<bootloader-configuration>): Deprecate "device" field in
favor of "target" field.  This is mostly a renaming but also a generalization
to support UEFI targets being paths to a mounted partition instead of a device
name.
* gnu/system/examples/bare-bones.tmpl:
* gnu/system/examples/desktop.tmpl:
* gnu/system/examples/lightweight-desktop.tmpl:
* gnu/system/examples/vm-image.tmpl:
* gnu/system/install.scm:
* gnu/tests.scm:
* gnu/tests/install.scm:
* gnu/tests/nfs.scm:
* tests/system.scm: Adapt all invocations of bootloader-configuration.
* guix/scripts/system.scm (perform-action): Rename device argument to
bootloader-target.
(process-action): Adapt caller.
* doc/guix.texi (Proceeding with the Installation):
* doc/guix.texi (Bootloader Configuration): Update documentation.
2017-08-23 22:23:19 +02:00
宋文武 a02967d77a
guix download: Support retrieving local file without the URI scheme.
* guix/scripts/download.scm (guix-download): Treat the URL argument as a local
file path when it fails on 'string->uri'.  Call 'fetch' with the processed
'uri' instead of the original URL argument.
* tests/guix-download.sh: Adjust accordingly.
2017-08-20 20:55:45 +08:00
Ludovic Courtès 578dfbe07b
gexp: 'ungexp-splicing' properly accounts for nested native inputs.
Previously, (gexp-native-inputs #~#$@(list #~#+foo)) would return '().

This is a followup to 5b14a7902c.

* guix/gexp.scm (gexp-inputs)[add-reference-inputs]: In the list case,
remove 'if' around 'fold-right'.  In 'map' lambda, always inherit N?.
* tests/gexp.scm ("gexp list splicing + ungexp-splicing"): New test.
2017-07-17 23:41:36 +02:00
Danny Milosavljevic 0bc6fe323d
syscalls: Add network-interface-running?
* guix/build/syscalls.scm (network-interface-running?): New variable.
Export it.
* tests/syscalls.scm: Add test.

Co-authored-by: John Darrington <jmd@gnu.org>
2017-07-12 16:15:30 +02:00
Ludovic Courtès 960c6ce96d
discovery: Recurse into directories pointed to by a symlink.
Reported by Christopher Baines <mail@cbaines.net>
and Alex Kost <alezost@gmail.com>
at <https://lists.gnu.org/archive/html/guix-devel/2017-06/msg00290.html>.

* guix/discovery.scm (scheme-files): When ENTRY is a symlink that
doesn't end in '.scm', call 'stat' and recurse if it points to a
directory.
* tests/discovery.scm ("scheme-modules recurses in symlinks to
directories"): New test.
2017-07-03 23:51:23 +02:00
Ludovic Courtès fc8fdcf56e
guix package: 'guix package -r PKG -u' does not upgrade PKG.
Fixes <http://bugs.gnu.org/27262>.
Reported by Mark H Weaver <mhw@netris.org>.

* guix/scripts/package.scm (transaction-upgrade-entry): Check if ENTRY
matches 'manifest-transaction-removal-candidate?' and return TRANSACTION
if it does.
(process-actions): Move 'options->removable' from step 2 to step 1.
2017-06-26 22:52:06 +02:00
Ludovic Courtès 6d382339de
profiles: Add 'manifest-transaction-removal-candidate?'.
* guix/profiles.scm (manifest-transaction-removal-candidate?): New
procedure.
* tests/profiles.scm ("manifest-transaction-removal-candidate?"): New
test.
2017-06-26 22:52:06 +02:00
Ludovic Courtès 1071f781d9
daemon: '--listen' can be passed several times, can specify TCP endpoints.
* nix/nix-daemon/guix-daemon.cc (DEFAULT_GUIX_PORT): New macro.
(listen_options): New variable.
(parse_opt): Push back '--listen' options to LISTEN_OPTIONS.
(open_unix_domain_socket, open_inet_socket)
(listening_sockets): New functions.
(main): Use it.  Pass SOCKETS to 'run'.
* nix/nix-daemon/nix-daemon.cc (matchUser): Remove.
(SD_LISTEN_FDS_START): Remove.
(acceptConnection): New function.
(daemonLoop): Rewrite to take a vector of file descriptors, to select(2)
on them, and to call 'acceptConnection'.
(run): Change to take a vector of file descriptors.
* tests/guix-daemon.sh: Add test.
2017-06-22 10:59:07 +02:00
Ludovic Courtès afd06f605b
environment: Disable profile collision checks.
Reported by Efraim Flashner.
This is a followup to a654dc4bcf.

* guix/profiles.scm (profile-derivation): Add #:allow-collisions? and
honor it.
* guix/scripts/environment.scm (inputs->profile-derivation): Pass
 #:allow-collisions? #f to 'profile-derivation'.
* tests/guix-environment.sh: Test "guix environment guix".
2017-06-21 16:53:22 +02:00
Ludovic Courtès a654dc4bcf
profiles: Catch and report collisions in the profile.
* guix/profiles.scm (&profile-collision-error): New error condition.
(manifest-transitive-entries, manifest-entry-lookup, lower-manifest-entry)
(check-for-collisions): New procedures.
(profile-derivation): Add call to 'check-for-collisions'.
* guix/ui.scm (call-with-error-handling): Handle '&profile-collision-error'.
* tests/profiles.scm ("collision", "collision of propagated inputs")
("no collision"): New tests.
2017-06-21 11:05:53 +02:00
Ludovic Courtès b3a00885c0
profiles: Manifest entries keep a reference to their parent entry.
* guix/profiles.scm (<manifest-entry>)[parent]: New field.
(package->manifest-entry): Add #:parent parameter.  Fill out the
'parent' field of <manifest-entry>; pass #:parent in recursive calls.
* guix/profiles.scm (sexp->manifest)[sexp->manifest-entry]: New
procedure.  Use it for version 3.
* tests/profiles.scm ("manifest-entry-parent"): New procedure.
("read-manifest")[entry->sexp]: Add 'manifest-entry-parent' to the
result.
2017-06-21 11:05:52 +02:00
Ludovic Courtès 55b4715fd4
profiles: Represent propagated inputs as manifest entries.
* guix/profiles.scm (package->manifest-entry): Turn DEPS into a list of
manifest entries.
(manifest->gexp)[entry->gexp]: Call 'entry->gexp' on DEPS.
Bump version to 3.
(sexp->manifest)[infer-dependency]: New procedure.
Use it for versions 1 and 2.  Parse version 3.
(manifest-inputs)[entry->gexp]: New procedure.
Adjust to 'dependencies' being a list of <manifest-entry>.
* tests/profiles.scm ("packages->manifest, propagated inputs")
("read-manifest"): New fields.
2017-06-21 11:05:52 +02:00
Ludovic Courtès b3d8153d39
import: pypi: Adjust URIs in tests.
This is a followup to d1e7ca2df8.

* tests/pypi.scm ("pypi->guix-package")
("pypi->guix-package, wheels"): Expect (pypi-uri "foo" version) for the
'uri' field.
2017-06-18 00:14:07 +02:00
Ludovic Courtès d46c4423f4
discovery: 'scheme-files' returns '() for a non-accessible directory.
Fixes a regression introduced in
d27cc3bfaa.

Reported by Ricardo Wurmus <rekado@elephly.net>.

* guix/discovery.scm (scheme-files): Catch 'scandir*' system errors.
Return '() and optionally raise a warning upon 'system-error'.
* tests/discovery.scm ("scheme-modules, non-existent directory"): New
test.
2017-06-18 00:14:07 +02:00
Ludovic Courtès fa73c19373
syscalls: Add 'scandir*'.
* guix/build/syscalls.scm (%struct-dirent-header): New C struct.
(string->pointer/utf-8, pointer->string/utf-8): New procedures.
(opendir*, closedir*, readdir*, scandir*): New procedures.
* tests/syscalls.scm ("scandir*, ENOENT")
("scandir*, ASCII file names", "scandir*, UTF-8 file names")
("scandir*, properties): New tests.
2017-06-16 17:08:22 +02:00
Ricardo Wurmus afbc94194e
guix: Add texlive importer.
* guix/import/texlive.scm: New file.
* guix/scripts/import/texlive.scm: New file.
* Makefile.am (MODULES): Add them.
* tests/texlive.scm: New file.
* Makefile.am (SCM_TESTS): Add it.
* guix/scripts/import.scm (importers): Add texlive importer.
* doc/guix.texi (Invoking guix import): Document it.
2017-06-15 17:03:19 +02:00
James Richardson 4679dd6967
import: cpan: Update CPAN importer to use MetaCPAN v1 API.
* guix/import/cpan.scm (module->dist-name, cpan-fetch): Use metacpan.org
URLs.
* tests/cpan.scm ("cpan->guix-package"): Adjust accordingly.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
2017-06-07 15:06:34 +02:00
Ludovic Courtès 2ca9f51ec8
daemon: Add '--timeout' and '--max-silent-time'.
* nix/nix-daemon/guix-daemon.cc (GUIX_OPT_TIMEOUT)
(GUIX_OPT_MAX_SILENT_TIME): New macros.
* nix/nix-daemon/guix-daemon.cc (options): Add '--timeout' and
'--max-silent-time'.
(parse_opt): Honor them.
* tests/guix-daemon.sh: Add test.
* doc/guix.texi (Invoking guix-daemon): Document the options.
(Common Build Options): Properly describe default
timeout/max-silent-time value.  Add cross-ref to "Invoking
guix-daemon".
2017-06-04 00:35:55 +02:00
Ludovic Courtès 2dc98729af
derivations: 'derivation-prerequisites-to-build' returns <substitutable>.
* guix/derivations.scm (derivation-prerequisites-to-build): Rename
 #:substitutable? to #:substitutable-info.
[derivation-substitutable?]: Rename to...
[derivation-substitutable-info]: ... this.  Return a list of <substitutable>.
Second return value is now a list of <substitutable> instead of a list
of strings.
* guix/ui.scm (show-what-to-build)[substitutable?]: Rename to...
[substitutable-info]: ... this.
Adjust to new 'derivation-prerequisites-to-build' return value type.
* tests/derivations.scm ("derivation-prerequisites-to-build and
substitutes"): Adjust.
("derivation-prerequisites-to-build and substitutes, local build"):
Likewise.
2017-06-02 18:47:06 +02:00
Ludovic Courtès ef51ac21ee
derivations: 'substitution-oracle' returns a <substitutable>.
* guix/derivations.scm (substitution-oracle): Use
'substitution-path-info' instead of 'substitution-paths'.  Turn SUBST
into a vhash from path to <substitutable>.  Change the returned
procedure to provide a <substitutable> instead of a Boolean.
* tests/derivations.scm ("substitution-oracle and #:substitute? #f"):
Mock 'substitutable-path-info' instead of 'substitutable-paths'.
2017-06-02 18:47:06 +02:00
Ludovic Courtès 0c152cd6e3
tests: Remove 't-profile-alt-*-link' files.
Reported by myglc2 <myglc2@gmail.com>
at <https://debbugs.gnu.org/cgi/bugreport.cgi?bug=27137#11>.

* tests/guix-package-net.sh: In the trap, remove $profile_alt-[0-9]*.
2017-06-02 18:47:06 +02:00
Ludovic Courtès 3e89491741
tests: Fix race condition in 'container-excursion*' test.
* tests/containers.scm ("container-excursion*"): Move (namespace pid)
call before (kill pid SIGKILL).
2017-05-31 17:08:45 +02:00
Ludovic Courtès aa401f9ba6
syscalls: Add 'thread-name' and 'set-thread-name'.
* guix/build/syscalls.scm (PR_SET_NAME, PR_GET_NAME)
(%max-thread-name-length): New variables.
(%prctl, set-thread-name, thread-name): New procedures.
* tests/syscalls.scm ("set-thread-name"): New test.
2017-05-28 23:13:39 +02:00
Ludovic Courtès bfe5264aa1
modules: Raise an error when a dependency could not be found.
* guix/modules.scm (&missing-dependency-error): New error condition.
(source-module-dependencies): Raise it when 'search-path' returns #f.
* tests/modules.scm ("&missing-dependency-error"): New test.
2017-05-25 14:25:17 +02:00
Ludovic Courtès ffa5e0a6d2
publish: Fix narinfo rendering for already-compressed items.
Fixes <http://bugs.gnu.org/26975>.
Reported by Mark H Weaver <mhw@netris.org>.

* guix/scripts/publish.scm (bake-narinfo+nar): Pass #f as the 2nd
argument to 'stat' and properly handle #f.
* tests/publish.scm (wait-for-file): New procedure.
("with cache"): Remove 'wait-for-file' procedure.
("with cache, uncompressed"): New test.
2017-05-18 21:35:35 +02:00
Ludovic Courtès 22ef06b801
union: Gracefully handle dangling symlinks in the input.
Fixes <http://bugs.gnu.org/26949>.
Reported by Pjotr Prins <pjotr.public12@thebird.nl>.

* guix/build/union.scm (file-is-directory?): Return #f when FILE does
not exist or is a dangling symlink.
(file=?): Pass #f as a second argument to 'stat'; return #f when both
ST1 or ST2 is #f.
* tests/profiles.scm (test-equalm): New macro.
("union vs. dangling symlink"): New test.
2017-05-18 11:38:48 +02:00
Mathieu Othacehe db427602d8
import: cran: Robustify cran-package?.
* guix/import/cran.scm (package->upstream-name): Return #f if url
  start and end index could not be determined.
  (cran-package?): Check if the upstream-name can be extracted from
  given package.
* tests/cran.scm: Add "r-minimal is not a cran package" to make sure that
  r-minimal is not detected as a cran package.

This fixes a failure of guix refresh on r-minimal because no
upsteam-name can be determined from ".../R-version.tar.gz" uri.
2017-05-13 12:40:20 +02:00
Ludovic Courtès 24b21720f7
publish: Advertise a short TTL for "baking" 404s.
* guix/scripts/publish.scm (not-found): Add #:phrase and #:ttl
parameters and honor them.
* tests/publish.scm ("with cache"): Check the 'cache-control' header on
of the 404 response.
2017-05-11 18:05:42 +02:00
Ludovic Courtès 30d2397f73
ui: 'string->duration' correctly handles hours.
* guix/ui.scm (string->duration): Add missing '=>' for hours.
* tests/ui.scm ("duration, 2 hours"): New test.
2017-05-10 22:05:21 +02:00
Ludovic Courtès 1a0adad83f
tests: Corrupt archive import test is robust against different store prefixes.
* tests/store.scm ("import corrupt path"): Set 'index' to #x70.
2017-05-07 00:18:36 +02:00
Ludovic Courtès cd903ef787
Add (guix discovery).
* guix/discovery.scm, tests/discovery.scm: New files.
* gnu/packages.scm (scheme-files, file-name->module-name)
(scheme-modules, all-package-modules): Remove.
(fold-packages): Rewrite in terms of 'fold-module-public-variables'.
* gnu/tests.scm: Use (guix discovery).
* Makefile.am (MODULES): Add guix/discovery.scm.
(SCM_TESTS): Add tests/discovery.scm.
2017-05-03 23:50:15 +02:00
Ludovic Courtès dff3189c7d
publish: Produce a "FileSize" narinfo field when possible.
* guix/scripts/publish.scm (narinfo-string): Add #:file-size parameter.
Produce a "FileSize" field when COMPRESSION is eq? to '%no-compression'
or when FILE-SIZE is true.
(bake-narinfo+nar): Pass #:file-size.
* tests/publish.scm ("/*.narinfo")
("/*.narinfo with properly encoded '+' sign")
("with cache"): Check for "FileSize".
2017-05-01 17:28:20 +02:00
Ludovic Courtès e30c2be10d
packages: Remove support for PACKAGE-VERSION deprecated syntax.
This syntax had been deprecated since 2016-02-28.

* gnu/packages.scm (%find-package): Remove #:fallback? parameter and handling.
* tests/guix-build.sh: Remove test for "time-1.7" syntax.
* doc/guix.texi (Invoking guix lint): Update 'guix lint' output in example.
2017-05-01 17:27:54 +02:00
Ludovic Courtès 25a49294ca
cache: Work around 'time-monotonic' bug in Guile 2.2.2.
* guix/cache.scm (time-monotonic) [guile-2.2]: New variable.
* tests/cache.scm (time-monotonic) [guile-2.2]: Likewise.
* guix/build/download.scm (time-monotonic) [guile-2.2]: Adjust comment:
it's a 2.2.2 bug.
2017-04-22 14:42:15 +02:00
Ludovic Courtès 8a8e2d2ed5
derivations: Adjust builder encoding test.
This is a followup to 9231ef12f2.

* tests/derivations.scm ("build-expression->derivation and builder
encoding"): Set '%default-port-encoding' to "UTF-8".
2017-04-22 14:07:46 +02:00
Ludovic Courtès 904c6c42eb
tests: Adjust to the addition of a new Coreutils version.
* tests/scripts-build.scm ("options->transformation, with-input"): Use
'specification->package' rather than refer to Coreutils by its
variable.  This is a followup to e162050dfc.
2017-04-21 22:53:59 +02:00
Ludovic Courtès 9231ef12f2
derivations: Restore UTF-8 encoding of build scripts.
Reported by Mark H Weaver <mhw@netris.org>
at <https://lists.gnu.org/archive/html/guix-devel/2017-04/msg00457.html>.

* guix/derivations.scm (build-expression->derivation): Use a string
output port for the expression.  This reverts part of
2dce88d5bb.
* tests/derivations.scm ("build-expression->derivation and builder
encoding"): New test.
2017-04-21 22:45:29 +02:00
Ludovic Courtès 1397b422e2
store: 'GUIX_DAEMON_SOCKET' can now be a URI.
* guix/store.scm (%daemon-socket-file): Rename to...
(%daemon-socket-uri): ... this.
(connect-to-daemon): New procedure.
(open-connection): Rename 'file' to 'uri'.  Use 'connect-to-daemon'
instead of 'open-unix-domain-socket'.
* guix/tests.scm (open-connection-for-tests): Rename 'file' to 'uri'.
* tests/guix-build.sh: Add tests.
* tests/store.scm ("open-connection with file:// URI"): New tests.
2017-04-21 17:23:37 +02:00
Ludovic Courtès 2363bdd707
gexp: 'gexp-modules' accepts plain Scheme objects.
* guix/gexp.scm (gexp-modules): Return '() when not (gexp? GEXP).
* tests/gexp.scm ("gexp-modules and literal Scheme object"): New test.
2017-04-19 17:51:39 +02:00
Ludovic Courtès 2ea2aac6e9
Add (guix cache) and use it in (guix scripts substitute).
* guix/cache.scm, tests/cache.scm: New files.
* Makefile.am (MODULES, SCM_TESTS): Add them.
* guix/scripts/substitute.scm (obsolete?): Remove.
(remove-expired-cached-narinfos): Rename to...
(cached-narinfo-expiration-time): ... this.  Remove the removal part and
only keep the expiration time part.
(narinfo-cache-directories): Add optional 'directory' parameter and
honor it.
(maybe-remove-expired-cached-narinfo): Remove.
(cached-narinfo-files): New procedure.
(guix-substitute): Use 'maybe-remove-expired-cache-entries' instead of
'maybe-remove-expired-cached-narinfo'.
2017-04-18 23:19:30 +02:00
Ludovic Courtès 00753f7038
publish: Add '--cache' and '--workers'.
Fixes <http://bugs.gnu.org/26201>.
Reported by <dian_cecht@zoho.com>.

These options allow nars to be "baked" off-line and cached instead of
being compressed on the fly.  As a side-effect, this allows us to
provide a 'Content-Length' header for nars.

* guix/scripts/publish.scm (show-help, %options): Add '--cache' and
'--workers'.
(%default-options): Add 'workers'.
(nar-cache-file, narinfo-cache-file, run-single-baker): New procedures.
(single-baker): New macro.
(render-narinfo/cached, bake-narinfo+nar)
(render-nar/cached): New procedures.
(make-request-handler): Add #:cache and #:pool parameters and honor
them.
(run-publish-server): Likewise.
(guix-publish): Honor '--cache' and '--workers'.
* tests/publish.scm ("with cache"): New test.
* doc/guix.texi (Invoking guix publish): Document it.
2017-04-18 23:18:41 +02:00
Ludovic Courtès 1563d6c79f
Add (guix workers).
* guix/workers.scm, tests/workers.scm: New files.
* Makefile.am (MODULES, SCM_TESTS): Add them.
* .dir-locals.el: Add rule for 'eventually'.
2017-04-18 23:17:17 +02:00
Ludovic Courtès 1bb895eabf
services: Service types can now specify a default value for instances.
* gnu/services.scm (&no-default-value): New variable.
(<service-type>)[default-value]: New field.
(<service>): Rename constructor from 'service' to 'make-service'.
(service): New macro.
(%service-with-default-value): New procedure.
(&missing-value-service-error): New error condition.
* tests/services.scm ("services, default value"): New test.
* doc/guix.texi (Service Types and Services): Document 'default-value'.
(Service Reference): Explain default values.
2017-04-16 00:48:08 +02:00