hex.pm is a package repository for Erlang and Elixir.
* guix/scripts/import.scm (importers): Add "hexpm".
* guix/scripts/import/hexpm.scm, guix/import/hexpm.scm,
guix/hexpm-download.scm: New files.
* guix/import/utils.scm (source-spec->object): Add "hexpm-fetch" to list of
fetch methods.
* guix/upstream.scm (package-update/hexpm-fetch): New function.
(%method-updates) Add it.
* Makefile.am: Add them.
Use *unspecified* as a marker for field values that have not been set.
Rationale: 'disabled may easily clash with user values for boolean fields, is
confusing (i.e. its meaning is *not* boolean false, but unspecified) and it
also passes silently through the symbol? predicate of a field of type symbol.
* gnu/services/configuration.scm (configuration-missing-default-value):
Renamed from configuration-no-default-value.
(define-maybe-helper): Use *unspecified* instead of 'disabled, and make
the default value optional.
* gnu/home/services/desktop.scm (home-redshift-configuration):
Change (maybe-xyz 'disabled) to maybe-xyz.
* gnu/services/authentication.scm (nslcd-configuration): Likewise.
* gnu/services/cgit.scm (repository-cgit-configuration): Likewise.
* gnu/services/file-sharing.scm (serialize-maybe-string)
(serialize-maybe-file-object): Use 'unspecified?' instead of (eq? val
'disabled).
* gnu/services/messaging.scm (raw-content?): Likewise.
(ssl-configuration): Change (maybe-xyz 'disabled) to maybe-xyz.
(prosody-configuration): Likewise.
* gnu/services/file-sharing.scm (transmission-daemon-configuration):
Likewise.
* gnu/services/messaging.scm (define-all-configurations):
Use *unspecified* instead of 'disabled'.
* gnu/services/networking.scm (opendht-configuration): Likewise.
* gnu/services/pm.scm (tlp-configuration): Likewise.
* gnu/services/telephony.scm (jami-account): Likewise.
(jami-configuration): Likewise.
* gnu/services/vpn.scm (openvpn-client-configuration): Likewise.
* tests/services/configuration.scm ("maybe type, no default")
("maybe type, with default"): New tests.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
As opposed to explicitly using 'disabled as value, or using the
(field1 (maybe-number) "") format.
It's mostly the work of Maxime Devos shared under #54674, with some
modifications by Attila Lendvai.
* gnu/services/configuration.scm (normalize-field-type+def): New function.
(define-configuration-helper) (define-configuration): Support new field
format.
* tests/services/configuration.scm (config-with-maybe-number->string): New
function.
("maybe value serialization of the instance"): New test.
("maybe value serialization of the instance, unspecified"): New test.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
* guix/import/hackage.scm (filter-dependencies): Convert OWN-NAMES
to lowercase before filtering.
(hackage-module->sexp): Remove #f from OWN-NAMES, which is used for
unnamed (default) libraries.
* tests/hackage.scm (test-cabal-internal-library-ignored): Add mismatched
uppercase letters.
Fixes <https://issues.guix.gnu.org/54760>.
* guix/import/hackage.scm (filter-dependencies): Support multiple
OWN-NAMES.
(hackage-module->sexp): Filter OWN-NAMES from HACKAGE-DEPENDENCIES and
HACKAGE-NATIVE-DEPENDENCIES.
* tests/hackage.scm (test-cabal-internal-library-ignored): New variable.
("hackage->guix-package test internal libraries are ignored"): New testcase.
* guix/import/cabal.scm (make-cabal-parser): Add name to section.
(is-lib): Add optional name to regular expression.
(lex-rx-res): Support selecting different substring.
(lex-lib): Match 2nd substring from IS-LIB.
(lex-line): Adapt to changes for lex-lib.
(cabal-library): Add name field and export CABAL-LIBRARY-NAME.
(eval): Remove special case for 'library, which is not required any more.
(make-cabal-section): Move special case for LIBRARY.
* tests/hackage.scm (test-read-cabal-library-name): New variable.
("read-cabal test 1"): Adapt testcase to changed internal structure.
("read-cabal test: library name"): New testcase.
* tests/hackage.scm (test-read-cabal-brackets-newline): New variable.
(test-cabal-no-final-newline): Likewise.
("hackage->guix-package test without final newline",
"read-cabal test: property brackets on new line"): New tests.
* guix/import/cabal.scm (lex-word): Add colon to delimiters.
* tests/hackage.scm (test-cabal-property-no-space): New variable.
("hackage->guix-package test properties without space"): New test.
* guix/import/cabal.scm (is-layout-property): Do not expect end of line.
(lex-layout-property): Check for newline.
(lex-property): Stop reading on closing curly bracket.
* tests/hackage.scm (test-read-cabal-2): New variable.
("read-cabal test: if brackets on the same line"): New test.
Fixes <https://issues.guix.gnu.org/54752>.
* guix/import/cabal.scm (make-cabal-parser): Replace if-then-else grammar case with elif-else, modify if-then accordingly.
(is-elif): New procedure.
(lex-elif): Likewise.
(is-id): Add elif keyword.
(lex-word): Add test for elif.
* tests/hackage.scm (test-cabal-if): New variale.
(test-cabal-else): Likewise.
(test-cabal-elif): Likewise.
(test-cabal-elif-brackets): Likewise.
(match-ghc-elif): Likewise.
("hackage->guix-package test lonely if statement",
"hackage->guix-package test else statement",
"hackage->guix-package test elif statement",
"hackage->guix-package test elif statement with brackets"): New tests.
* guix/scripts/package.scm (options->installable): Add TRANSFORM
argument, to be able to directly transform the new packages before
creating their manifest entries.
(process-actions): Remove transform-entry, and step3, transforming
directly in step2.
* tests/guix-package.sh: Add test.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
All these keys had expiration dates. 'tests/keys/ed25519.pub' expired
on 2022-04-24.
Fixes <https://issues.guix.gnu.org/55506>.
* tests/keys/ed25519.pub, tests/keys/ed25519-2.pub,
tests/keys/ed25519-3.pub: Remove expiration date.
Fixes <https://issues.guix.gnu.org/54723>.
Reported by Guillaume Le Vaillant <glv@posteo.net>.
Regression introduced in f743f2046b.
With commit f743f2046b, responses to
pipelined GETs would end up being written concurrently by many threads.
Thus the body of those responses could be interleaved and garbled.
* guix/scripts/publish.scm: Revert
f743f2046b.
* tests/publish.scm ("/*.narinfo pipeline"): New test.
Until now dots were read as symbols.
* guix/scripts/style.scm (read-with-comments)[dot]: New variable.
[dot?, reverse/dot]: New procedures.
Use 'reverse/dot' instead of 'reverse' when reading lists.
* tests/style.scm ("read-with-comments: dot notation")
("((a . 1) (b . 2))", "(a b c . boom)"): New tests.
This is a followup to a2c759c830.
* guix/scripts/system/reconfigure.scm (running-services): Fill in the
'transient?' field of <live-service>.
* tests/services.scm ("shepherd-service-upgrade: one unchanged, one upgraded, one new")
("shepherd-service-upgrade: service depended on is not unloaded")
("shepherd-service-upgrade: obsolete services that depend on each
other"): Adjust calls to 'live-service'.
* gnu/packages.scm (package-unique-version-prefix): New procedure.
* guix/scripts/package.scm (manifest-entry-version-prefix): Use it.
* tests/packages.scm ("package-unique-version-prefix, gcc@8")
("package-unique-version-prefix, grep"): New tests.
* guix/scripts/home/import.scm (generate-bash-configuration+modules):
Define 'alias-rx'.
[bash-alias->pair]: Use it.
* tests/home-import.scm (match-home-environment-bash-service-with-alias):
New variable.
("manifest->code: Bash service with aliases"): New test.
* guix/scripts/home.scm (show-help, %options): Add '--network',
'--share', and '--expose'.
(not-config?, user-shell, spawn-home-container): New procedures.
(%default-system-profile): New variable.
(perform-action): Add #:file-system-mappings, #:container-command,
and #:network?; honor them.
(process-action): Adjust accordingly.
(guix-home)[parse-sub-command]: Add "container".
[parse-args]: New procedure.
Use it instead of 'parse-command-line'.
* tests/guix-home.sh: Add tests.
* doc/guix.texi (Declaring the Home Environment): Mention 'guix home
container' as a way to test configuration.
(Invoking guix home): Document it.
Until now these two actions were silently ignored.
* guix/scripts/home.scm (show-help, %options): Add "--graph-backend".
(%default-options): Add 'graph-backend' key.
(export-extension-graph, export-shepherd-graph): New procedures.
(perform-action): Add #:graph-backend parameter. Add cases for the
'extension-graph' and 'shepherd-graph' actions.
(process-action): Pass #:graph-backend to 'perform-action'.
* guix/scripts/system.scm (service-node-type)
(shepherd-service-node-type): Export
* tests/guix-home.sh: Add tests.
* doc/guix.texi (Invoking guix home): Document it.
Previously, when reading an incompatible "parameters" file, 'guix
system' would print a warning and then crash with a wrong-type-arg
backtrace because code expects 'read-boot-parameters' to always return a
<boot-parameters> record.
* gnu/system.scm (read-boot-parameters): Upon incompatibility, raise an
error instead of returning #f. Also raise a '&fix-hint' condition.
* tests/boot-parameters.scm ("read, construction, mandatory fields"):
Define 'test-read-boot-parameters' as a macro; expect
'formatted-message?' exceptions rather than #f returns.
Fixes <https://issues.guix.gnu.org/53915>.
Reported by Gordon Quad <gordon@niflheim.info>.
* guix/packages.scm (replace-input): Preserve the outputs of INPUT by
default.
* tests/packages.scm ("modify-inputs, replace, extra output"): New test.
This addresses the following backtrace from
"guix lint -c wrapper-inputs hostapd":
Backtrace:ostapd@2.10 [wrapper-inputs]...
[...]
174:9 3 (gexp->approximate-sexp #<gexp (modify-phases %standard?>)
In srfi/srfi-1.scm:
586:17 2 (map1 (#<gexp-output out> #<gexp-input "pkg-config":o?>))
In guix/gexp.scm:
175:16 1 (_ _)
In ice-9/boot-9.scm:
1685:16 0 (raise-exception _ #:continuable? _)
ice-9/boot-9.scm:1685:16: In procedure raise-exception:
Throw to key `match-error' with args `("match" "no matching pattern" #<gexp-output out>)'.
* guix/gexp.scm (gexp->approximate-sexp): Handle the case where 'reference' is
a <gexp-output>,, by returning (*approximate*).
* tests/gexp.scm ("gexp->approximate-sexp, outputs"): Test it.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
This fixes a false-positive in the linter:
guix lint -c 'wrapper-inputs' libaio
* guix/gexp.scm (gexp->approximate-sexp): Allow the 'thing' in <gexp-input> to
be a sexp, without approximation, by testing if it is a record.
* tests/gexp.scm ("unquoted sexp (not a gexp!)"): Test it.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
emacs-build-system sets #:tests? #f by default, so the linter shouldn't warn
if #:tests? #t is set for packages using emacs-build-system. Likewise for
texlive-build-system.
* guix/lint.scm (check-tests-true): Do not warn if the build system
is emacs-build-system or texlive-build-system.
* tests/lint.scm
("tests-true: #:tests? #t acceptable for emacs packages")
("tests-true: #:tests? #t acceptable for texlive packages"): New tests.
Fixes: <https://issues.guix.gnu.org/50299>
Reported-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>
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.
This version field exposes the (already present) version information of a boot
parameters file.
* gnu/system.scm (%boot-parameters-version): New variable.
(<boot-parameters>)[version]: New field.
(read-boot-parameters): Use it.
(operating-system-boot-parameters-file): Likewise.
* tests/boot-parameters.scm (test-read-boot-parameters): Use
%boot-parameters-version as the default version value in the template.
Fixes <https://issues.guix.gnu.org/51801>.
Reported by Maxim Cournoyer <maxim.cournoyer@gmail.com>.
* guix/scripts/build.scm (options->derivations)[warn-if-unsupported]:
New procedure.
[compute-derivation]: Use it.
* tests/guix-build.sh: Add test.
Previously user-facing commands would happily start building packages
even if they do not support that system. With this change, all the
user-facing commands reject unsupported packages without going further.
* guix/profiles.scm (profile-derivation): Add #:allow-unsupported-packages?.
Define 'check-supported-packages' and honor #:allow-unsupported-packages?.
* tests/guix-pack.sh, tests/guix-package.sh, tests/guix-shell.sh: Ensure
that unsupported packages are rejected.
* tests/guix-system.sh: Pass "--system=armhf-linux" when attempting to
build gnu/system/examples/asus-c201.tmpl.
Previously 'package-transitive-supported-systems' would enter an
infinite loop over the cross-compilation tool chain if
%CURRENT-TARGET-SYSTEM was set.
* guix/packages.scm (package-transitive-supported-systems)[supported-systems-procedure]:
Pass explicit SYSTEM and TARGET parameters.
* tests/packages.scm ("supported-package? vs. %current-target-system"):
New test.
Read hash extensions preserve source location info as source properties
on their result. However, in Guile 3.0.8, that location would be
dismissed, leading 'local-file' to fail to resolve file names relative
to the source directory.
Fixes <https://issues.guix.gnu.org/54003>.
Reported by Aleksandr Vityazev <avityazev@posteo.org>.
* guix/gexp.scm <eval-when> [read-syntax-redefined?, read-procedure]
[read-syntax*]: New variables.
[read-ungexp]: Adjust to expect either sexps or syntax objects.
[read-gexp]: Call 'read-procedure'.
* tests/gexp.scm ("local-file, relative file name, within gexp")
("local-file, relative file name, within gexp, compiled"): New tests.
Fixes a regression whereby, when cross-compiling, 'computed-file' would
use a cross-compiled Guile as its builder, which would fail to run.
Regression introduced in af57d1bf6c (the
problem had always been there but was hidden before behind the (not guile)
condition.)
* guix/gexp.scm (computed-file-compiler): For 'guile', pass #:target #f.
* tests/gexp.scm ("lower-object, computed-file, #:target"): New test.
This will allow mirror operators to alter these non-normative bits of a
narinfo without having to resign narinfos.
* guix/scripts/publish.scm (narinfo-string): Remove
URL/Compression/FileSize from BASE-INFO. Move them after "Signature".
* tests/publish.scm ("/*.narinfo")
("/*.narinfo with properly encoded '+' sign")
("/*.narinfo with lzip + gzip")
("with cache, lzip + gzip"): Adjust accordingly.
* tests/substitute.scm ("query narinfo with signature over relevant subset"):
New test.
Fixes a bug whereby authentication of a commit *not* descending from the
introductory commit could succeed, provided the commit verifies the
authorization invariant.
In the example below, A is a common ancestor of the introductory commit
I and of commit X. Authentication of X would succeed, even though it is
not a descendant of I, as long as X is authorized according to the
'.guix-authorizations' in A:
X I
\ /
A
This is because, 'authenticate-repository' would not check whether X
descends from I, and the call (commit-difference X I) would return X.
In practice that only affects forks because it means that ancestors of
the introductory commit already contain a '.guix-authorizations' file.
* guix/git-authenticate.scm (authenticate-repository): Add call to
'commit-descendant?'.
* tests/channels.scm ("authenticate-channel, not a descendant of introductory commit"):
New test.
* tests/git-authenticate.scm ("authenticate-repository, target not a descendant of intro"):
New test.
* tests/guix-git-authenticate.sh: Expect earlier test to fail since
9549f0283a is not a descendant of
$intro_commit. Add new test targeting an ancestor of the introductory
commit, and another test targeting the v1.2.0 commit.
* doc/guix.texi (Specifying Channel Authorizations): Add a sentence.
These tests mimic similar tests already in 'tests/channels.scm', but
without using the higher-level 'authenticate-channel'.
* tests/git-authenticate.scm ("introductory commit, valid signature")
("introductory commit, missing signature")
("introductory commit, wrong signature"): New tests.
Fixes a regression introduced in
af57d1bf6c whereby tests would end up
building the world.
* guix/gexp.scm (mixed-text-file): Add #:guile parameter and honor it.
* tests/gexp.scm ("mixed-text-file"): Pass #:guile to 'mixed-text-file'.
("file-union"): Pass #:guile to 'file-union'.
("lower-object, computed-file"): Pass #:guile to 'computed-file'.
("lower-object, computed-file + grafts"): Likewise.
* tests/packages.scm ("origin->derivation, single file with snippet"):
Likewise.
* tests/profiles.scm ("profile-derivation, ordering & collisions"):
Likewise.
* guix/tests.scm (test-file): Likewise.
* guix/import/pypi.scm (find-project-url): New function.
(make-pypi-sexp): Use find-project-url.
* tests/pypi.scm (foo-json): New procedure.
(test-json-1, test-json-2): Define in terms of it.
("find-project-url, with numpy", "find-project-url, uWSGI"):
("find-project-url, flake8-array-spacing")
("find-project-url, foo/goo"): New tests.
Co-authored-by: Ludovic Courtès <ludo@gnu.org>
Fixes <https://issues.guix.gnu.org/53267>.
Reported by Tirifto <tirifto@posteo.cz>.
Regression introduced in 65ffb9388c.
In the (unlikely) case where the profile we're targeting with "guix
upgrade -n" or similar is already built, a new profile generation would
be created and linked to despite the use of '-n'. This is because
65ffb9388c assumed that dry-run behavior
would be handled solely by the build handler, which is not the case when
there's nothing to build.
* guix/scripts/package.scm (build-and-use-profile): Reintroduce #:dry-run?
and honor it.
(process-actions): Pass #:dry-run? to 'build-and-use-profile'.
* tests/guix-package-net.sh: Add test.
Fixes: <https://issues.guix.gnu.org/52943>.
* tests/gremlin.scm (file-needed/recursive)[ground-truth]: On aarch64-linux,
remove the dynamic linker from this list.
Fixes a regression introduced in
a773c3142d, which would lead the first
'trap' to be ignored, thereby leaving 't-guix-graph-*' directories
behind it.
* tests/guix-graph.sh: Remove first 'trap' line that had no effect;
replace second 'trap' line.
* Makefile.am (SCM_TESTS): Register new tests.
* guix/import/github.scm
(%github-api): New variable.
(fetch-releases-or-tags): Use the new variable.
* tests/import-github.scm: New file with tests.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
* guix/build/utils.scm (wrap-script):
Don't add (car cl) one too many times, cl its self contains it's car.
Split the aguments string with string-tokenize to avoid leaving an empty
string argument when there should be none. These two bugs seemed to
be partially cancelling each other out so that scripts still worked when
ran with no arguments.
* tests/build-utils.scm: Adjust wrap-script to above changes.
Add two tests to ensure the command line arguments appear identical to a
script and its wrapped version.
Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>
* guix/scripts/style.scm (canonicalize-comment): New procedure.
(pretty-print-with-comments): Add #:format-comment. and honor it.
(object->string*): Add 'args' and honor them.
(format-package-definition): Pass #:format-comment to
'object->string*'.
* tests/style.scm ("pretty-print-with-comments, canonicalize-comment"):
New test.
This allows us to express cases where a newline should be inserted
immediately after the head symbol of a list.
* guix/scripts/style.scm (%newline-forms): New variable.
(newline-form?): New procedure.
(pretty-print-with-comments): Handle "newline forms".
* tests/style.scm: Add test.
* guix/scripts/style.scm (vhashq): New macro.
(%special-forms): New variable.
(special-form?): New procedure.
(pretty-print-with-comments): Add many clauses and tweak existing
rules.
* tests/style.scm (test-pretty-print): New macro.
<top level>: Add 'test-pretty-print' tests.
Fixes <https://issues.guix.gnu.org/52752>.
Reported by Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>.
* tests/gremlin.scm ("file-needed/recursive"): Augment the list of vDSO
names.
Fixes: <https://issues.guix.gnu.org/52940>.
* tests/gremlin.scm (file-needed/recursive): Consider two entries to be
equivalent not when they are the same string, but rather when they refer to
the same file.
[ground-truth]: In addition to strings that begin with "linux-vdso.so", remove
strings that begin with "linux-vdso64.so".
Updaters need to be modified to return 'git-reference' objects.
This patch modifies the 'generic-git' and 'minetest' updater,
but others might need to be modified as well.
* guix/git.scm (git-reference->git-checkout): New procedure.
* guix/upstream.scm (package-update/git-fetch): New procedure.
(<upstream-source>)[urls]: Document it can be a 'git-reference'.
(%method-updates): Add 'git-fetch' mapping.
(update-package-source): Support 'git-reference' sources.
(upstream-source-compiler/url-fetch): Split off from ...
(upstream-source-compiler): ... this, and call ...
(upstream-source-compiler/git-fetch): ... this new procedure if the URL
field contains a 'git-reference'.
* guix/import/git.scm
(latest-git-tag-version): Always return two values and document that the tag
is returned as well.
(latest-git-release)[urls]: Use the 'git-reference' instead of the
repository URL.
* guix/import/minetest.scm (latest-minetest-release)[urls]: Don't wrap the
'git-reference' in a list.
* tests/minetest.scm (upstream-source->sexp): Adjust to new convention.
Co-authored-by: Maxime Devos <maximedevos@telenet.be>
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
specification->package fails on manifest entries with specific outputs,
resulting in an invalid home configuration. This changes the import command
to use specification->package+output instead.
* guix/scripts/home/import.scm (manifest+configuration-files->code): Make sure
manifest entries with specific output are also handled.
* tests/home-import.scm: Specify output in home environment manifest entry.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
All these tests pass, because they only test the old-style input alists with
labels.
* tests/upstream.scm ("changed-inputs returns no changes",
"changed-inputs returns changes to labelled input list",
"changed-inputs returns changes to all labelled input lists"): New tests.
This code duplicates the (gnu system image) and (gnu build image) code. Using
VM for image generation is not needed, not portable and really slow. Remove
all the VM image generation code to make sure that only the image API is used.
* gnu/build/vm.scm: Remove it. Move the qemu-command procedure to ...
* gnu/build/marionette.scm: ... here.
* gnu/local.mk (GNU_SYSTEM_MODULES): Adapt it.
* tests/modules.scm: Ditto.
* gnu/tests/install.scm: Ditto.
* gnu/system/vm.scm: Adapt it and remove expression->derivation-in-linux-vm,
qemu-img, system-qemu-image/shared-store and system-docker-image procedures.
* doc/guix.texi (G-Expressions): Adapt it.
The third key will be used in an upcoming commit.
Rename public keys to .pub.
* guix/tests/gnupg.scm (%ed25519-3-public-key-file): New variable.
(%ed25519-3-secret-key-file): New variable.
(%ed25519-2-public-key-file): Renamed from %ed25519bis-public-key-file.
(%ed25519-2-secret-key-file): Renamed from %ed25519bis-secret-key-file.
* tests/keys/ed25519-3.key: New file.
* tests/keys/ed25519-3.sec: New file.
Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>
* guix/import/elpa.scm: (guix-package->elpa-name): New procedure.
(latest-release): Use it.
* tests/elpa.scm ("guix-package->elpa-name: without 'upstream-name' property")
("guix-package->elpa-name: with 'upstream-name' property"): Test it.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
With the switch to "ustar" format in commit
bdf5c16ac0, the maximum file length has
increased.
* guix/lint.scm (check-patch-file-names): Adjust margin used to check for
patch file lengths. Increase allowable patch file length appropriate to new
tar format. Extend warning to explain that long files may break 'make dist'.
* tests/lint.scm: Update tests accordingly.
This follows up on commit 5cd1019488.
* tests/cran.scm (description): Include a very long line.
(description->package): Update the golden description to match the
paragraph filling now performed by BEAUTIFY-DESCRIPTION.
* guix/scripts/hash.scm (git-hash): New procedure.
(%options): Use it.
* tests/guix-hash.sh: Test it.
* doc/guix.texi: Update.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>