* guix/scripts/package.scm (upgradeable?): Rename to...
(upgraded-manifest-entry): ... this. Change to take a <manifest-entry>
and to return a <manifest-entry>.
(options->installable)[to-upgrade]: Adjust accordingly.
* guix/build/syscalls.scm (errno): Do not export.
(syscall->procedure): Change to return a procedure that returns both the
value and errno. Use #:return-errno? where available.
(mount, umount, swapon, swapoff, mkdtemp!, fdatasync, statfs)
(clone, setns, pivot-root, fcntl-flock, network-interface-names)
(network-interface-flags, set-network-interface-flags)
(set-network-interface-address, network-interface-address):
(network-interfaces, tcgetattr, tcsetattr, terminal-window-size): Adjust
accordingly using 'let-values'.
* guix/modules.scm, tests/modules.scm: New files.
* Makefile.am (MODULES, SCM_TESTS): Add them.
* doc/guix.texi (G-Expressions): Add an example of
'source-module-closure'.
This avoids loads of needless 'stat' calls due to the default 'relative
setting and the 'canonicalize-path' calls it leads to. This was
especially visible when 'guix substitute' access files in
/var/guix/substitute/cache.
* guix/ui.scm (run-guix-command): Set %FILE-PORT-NAME-CANONICALIZATION
to #f.
The former pattern included the "jar" binary.
* guix/build/ant-build-system.scm (generate-classpath): Change pattern.
Suggested by: Ricardo Wurmus <rekado@elephly.net>
This fixes a bug whereby the choice between stripping 'libfoo.so.0.1.2'
and stripping 'libfoo.so' (the symlink) would be non-deterministic.
* guix/build/gnu-build-system.scm (strip)[strip-dir]: Use 'find-files'
instead of 'file-system-fold' so that files are picked in deterministic
order.
* guix/scripts/system.scm (service-upgrade): Move to...
* gnu/services/shepherd.scm (shepherd-service-upgrade): ... here.
* tests/system.scm ("service-upgrade: nothing to do", "service-upgrade:
one unchanged, one upgraded, one new", "service-upgrade: service
depended on is not unloaded", "service-upgrade: obsolete services that
depend on each other"): Move to...
* tests/services.scm: ... here. Adjust to 'service-upgrade' rename.
Reported by Mark H Weaver <mhw@netris.org>
at <https://lists.gnu.org/archive/html/guix-devel/2016-08/msg01470.html>.
* guix/scripts/system.scm (service-upgrade)[live-service-required?]: New
procedure.
[obsolete?]: Use it.
* tests/system.scm ("service-upgrade: service depended on is not
unloaded", "service-upgrade: obsolete services that depend on each
other"): New tests.
* guix/scripts/system.scm (service-upgrade)[essential?]: SERVICE is now
a <live-service>.
[lookup-target, lookup-live, running?, stopped, obsolete?]: New
procedures.
[to-load, to-unload]: Use them. TO-UNLOAD is now a list of
<live-service>.
(call-with-service-upgrade-info): Extract symbols from TO-UNLOAD.
* tests/system.scm ("service-upgrade: one unchanged, one upgraded, one
new"): Adjust accordingly.
* guix/scripts/system.scm (service-upgrade): New procedure, with code
from...
(call-with-service-upgrade-info): ... here. Use it.
* tests/system.scm (live-service, service-upgrade): New variables.
("service-upgrade: nothing to do", "service-upgrade: one unchanged, one
upgraded, one new"): New tests.
* gnu/services/herd.scm (<live-service>): New record type.
(current-services): Change to return a single value: #f or a list of
<live-service>.
* guix/scripts/system.scm (call-with-service-upgrade-info): Adjust
accordingly.
* gnu/tests/base.scm (run-basic-test)["shepherd services"]: Adjust
accordingly.
* guix/build/ruby-build-system.scm (log-file-deletion): New procedure.
(install): Remove files containing non-reproducible elements. Print when each
file is deleted.
* guix/scripts/lint.scm (check-description-style): Emit a warning if
trademark signs found in description.
* tests/lint.scm (description: may not contain trademark signs): Add
test.
* guix/scripts/archive.scm, guix/scripts/build.scm,
guix/scripts/environment.scm, guix/scripts/system.scm,
guix/scripts/package.scm: Disable grafting when a dry-run parameter is given.
Fixes <https://bugs.gnu.org/23881>.
* guix/scripts/system.scm (previous-grub-entries)
(display-system-generation): Handle the case where the root device is
specified by UUID.
* guix/profiles.scm (xdg-mime-database): Run the hook when GLIB is referenced by
the manifest. Add SHARED-MIME-INFO to the mime packages of `update-mime-database'.
Suggested-by: Ludovic Courtès <ludo@gnu.org>
* guix/packages.scm (patch-and-repack)[build]: Use
'--no-backup-if-mismatch' patch flag to avoid making *.orig files.
* guix/build/graft.scm (replace-store-references): Reimplement for
faster grafting. Use binary I/O instead of textual I/O. Replace
'mapping' argument (an alist) with 'replacement-table' (a vhash).
(rewrite-directory): Adapt to mapping argument change in
'replace-store-references'. Remove 'with-fluids' that previously set
'%default-port-encoding' to #f, since we now use binary I/O.
(define-inline, hash-length): New macros.
(nix-base32-char?): New variable.
Fixes regression introduced in 8bf92e3904.
Reported by myglc2 <myglc2@gmail.com> in <http://bugs.gnu.org/24135>.
* guix/scripts/system.scm (with-shepherd-error-handling): Rename 'body'
to 'mbody'. Expand to a monadic procedure that runs MBODY.
* guix/gnu-maintenance.scm (kde-package?, latest-kde-release): New private
functions.
(%kde-updater): New public variable.
* guix/scripts/refresh.scm (list-updaters): Add %kde-updater.
* doc/guix.texi (Invoking guix refresh): Mention the new updater.
* guix/scripts/publish.scm (narinfo-string): Force %NO-COMPRESSION when
STORE-PATH matches 'compressed-file?'.
* guix/utils.scm (compressed-file?): New procedure.
* tests/publish.scm ("/*.narinfo for a compressed file"): New test.
* emacs/guix-main.scm (process-package-actions): Set grafting according
to 'dry-run?'.
* guix/scripts.scm (build-package): Disable grafts when 'dry-run?' is #t.
Co-authored-by: Ludovic Courtès <ludo@gnu.org>
Fixes 'guix size foo bar' when 'foo' is in the local store and 'bar'
isn't, which could lead to an incomplete requisite list.
* guix/scripts/size.scm (requisites*): Partition ITEMS according to
'valid-path?'. Use 'substitutable-requisites' only on invalid items.
* guix/zlib.scm (gzread!): Augment docstring to clarify when zero is
returned (based on reading zlib code).
(make-gzip-input-port)[read!]: Remove scary comment.
Fixes <http://bugs.gnu.org/24029>.
Reported by Dylan Jeffers <sapientech@openmailbox.org>.
* guix/profiles.scm (package->manifest-entry): Change #:output to
default to "out".
(packages->manifest): Add 'package?' in second 'match' clause.
* tests/profiles.scm ("package->manifest-entry defaults to \"out\""):
New test.
* guix/scripts/environment.scm (create-environment): Set
'GUIX_ENVIRONMENT' to PROFILE.
* tests/guix-environment.sh: Test it.
* doc/guix.texi (Invoking guix environment): Document it.
Fixes <http://bugs.gnu.org/23997>.
* guix/import/pypi.scm (guix-package->pypi-name): Rewrite using
'basename' and 'hyphen-package-name->name+version'.
* tests/pypi.scm ("guix-package->pypi-name, old URL style")
("guix-package->pypi-name, new URL style"): New tests.
Resolved conflicts:
* gnu/packages/scheme.scm: Conflict in import of (guix licenses). On master,
"#:hide (openssl)" was used. On core-updates, "#:select (some licenses)" was
used. The latter won the conflict.
* gnu/packages/version-control.scm (git)[arguments]: Whitespace conflict
in 'install-shell-completion.
* guix/config.scm.in (%storedir, %localstatedir)
(%sysconfdir, %sbindir): New variables.
(%store-directory): Use %STOREDIR.
(%state-directory): Use %LOCALSTATEDIR.
(%config-directory): Use %SYSCONFDIR.
(%guix-register-program): Use %SBINDIR.
* guix/scripts/publish.scm (show-help, %options): Add '--compression'.
(<compression>): New record type.
(%no-compression, %default-gzip-compression): New variables.
(%default-options): Add 'compression' key.
(narinfo-string): Add #:compression parameter and honor it.
(render-narinfo): Likewise.
(render-nar): Likewise.
<top level>: Add call to 'declare-header!'.
(swallow-zlib-error): New macro.
(nar-response-port): New procedure.
(http-write): Add call to 'force-output'. Use 'nar-response-port'
instead of 'response-port'. Use 'swallow-zlib-error'.
(make-request-handler): Add #:compression parameter and honor it. Add
"nar/gzip" URL handler.
(run-publish-server): Add #:compression parameter and honor it.
(guix-publish): Honor --compression.
* tests/publish.scm (http-get-port, wait-until-ready): New procedures.
<top level>: Run main server with "-C0". Call 'wait-until-ready'.
("/nar/gzip/*", "/*.narinfo with compression"): New tests.
* doc/guix.texi (Invoking guix publish): Document it.
Fixes <http://bugs.gnu.org/23969>.
Reported by Vincent Legoll <vincent.legoll@gmail.com>.
* guix/records.scm (report-invalid-field-specifier): New procedure.
* tests/records.scm ("define-record-type* & wrong field specifier"): New
test.
Previously, using something like
"--substitute-urls=http://example.org///" would lead to a
'cache-narinfo!' call with #f as its second argument.
It would also do the wrong thing for URLs with a non-empty initial path
component, such as "http://example.org/foo/bar".
* guix/scripts/substitute.scm (fetch-narinfos)[handle-narinfo-response]:
Add call to 'basename' for PATH.
* guix/scripts/lint.scm (validate-uri): Upon 200 http-response, check
the 'response-content-length' and emit a warning when it is <= 1000.
* tests/lint.scm (call-with-http-server): Add 'data' parameter.
(with-http-server): Likewise.
(%long-string): New variable.
("home-page: 200"): Pass %LONG-STRING to 'with-http-server'.
("home-page: 404", "source: 200", "source: 404"): Likewise.
("home-page: 200 but short length"): New test.
("source: 200 but short length"): New test.
* guix/gexp.scm (<gexp>)[modules]: New field.
(gexp-modules): New procedure.
(gexp->derivation): Use it and append the result to %MODULES.
Update docstring to mark #:modules as deprecated.
(current-imported-modules, with-imported-modules): New macros.
(gexp): Pass CURRENT-IMPORTED-MODULES as second argument to 'gexp'.
(gexp->script): Use and honor 'gexp-modules'; define '%modules'.
* tests/gexp.scm ("gexp->derivation & with-imported-modules")
("gexp->derivation & nested with-imported-modules")
("gexp-modules & ungexp", "gexp-modules & ungexp-splicing"):
New tests.
("program-file"): Use 'with-imported-modules'. Remove #:modules
argument to 'program-file'.
* doc/guix.texi (G-Expressions): Document 'with-imported-modules'.
Mark #:modules of 'gexp->derivation' as deprecated.
* emacs/guix-devel.el: Add syntax for 'with-imported-modules'.
(guix-devel-keywords): Add it.
* .dir-locals.el: Likewise.
The distinction between native inputs and "normal" inputs can already be
determined by looking at the 'native?' field of <gexp-input>. The extra
'natives' field of <gexp> added complexity for no good reason.
* guix/gexp.scm (<gexp>)[natives]: Remove.
(write-gexp): Remove use of 'gexp-native-references'.
(gexp-inputs)[native-input?]: New procedure.
Use it.
(gexp->sexp)[reference->sexp]: Honor N? for input lists.
Remove use of 'gexp-native-references'.
(gexp)[collect-native-escapes]: Remove.
Simplify.
* guix/import/cpan.scm (fix-source-url): New procedure.
(cpan-module->sexp): Use it to construct our source-url.
* tests/cpan.scm: Add tests for fix-source-url.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
* guix/download.scm (url-fetch): Include (guix base64) module on the
build-side.
* guix/build/download.scm (http-fetch): Add "Authorization" header when
userinfo is present in the URI.
This is a followup to ea0c6e0507.
* guix/scripts/substitute.scm (%narinfo-cache-directory): Use
'cache-directory' when (getuid) returns non-zero.
(cache-narinfo!): Remove 'catch'.
* guix/build/emacs-build-system.scm (emacs-inputs-el-directories):
Add ".../share/emacs/site-lisp" directory to the returned result as
elisp files can also be placed there.
The two mistakes made here (confusion between 'modules' and
'imported-modules') were canceling each other.
* guix/packages.scm (patch-and-repack): Use IMPORTED-MODULES, not
MODULES, as the base of the module list passed as #:modules to
'gexp->derivation'.
(origin->derivation): Pass IMPORTED-MODULES, not MODULES, as
the #:imported-modules argument of 'patch-and-repack'.
* gnu/packages/engineering.scm (fastcap)[source]: Add 'imported-modules'
field.
* guix/store.scm (write-arg): Remove 'file' case.
(true): New procedure.
(add-to-store): Add #:select? parameter and honor it. Use hand-coded
stub instead of 'operation'.
(interned-file): Add #:select? parameter and honor it.
* doc/guix.texi (The Store Monad): Adjust 'interned-file' documentation
accordingly.
* guix/packages.scm (origin->derivation): Rename 'source' parameter to
'origin'. Move cases where SOURCE is a string to...
(package-source-derivation): ... here.
* doc/guix.tex (Invoking guix import): Mention that the pypi importer
works better with "unzip".
* guix/import/pypi.scm (latest-wheel-release,
wheel-url->extracted-directory): New procedures.
* tests/pypi.scm (("pypi->guix-package, wheels"): New test.
Suggested by Danny Milosavljevic <dannym@scratchpost.org>
at <https://lists.gnu.org/archive/html/guix-devel/2016-06/msg00456.html>.
* guix/build/syscalls.scm (fdatasync): New procedure.
* guix/utils.scm (with-atomic-file-output): Use it. Use 'close-port'
instead of 'close'.
* guix/scripts/publish.scm (show-help, %options): Add --ttl.
(render-narinfo): Add #:ttl and honor it.
(make-request-handler): Add #:narinfo-ttl and honor it.
(run-publish-server): Likewise.
(guix-publish): Honor --ttl, pass it to 'run-publish-server'.
Fixes <http://bugs.gnu.org/21888>.
Reported by iyzsong@member.fsf.org (宋文武).
* guix/scripts/publish.scm (narinfo-string): Use
'encode-and-join-uri-path' instead of 'string-append' to compute URL.
* tests/publish.scm ("/*.narinfo with properly encoded '+' sign"):
("/nar/ with properly encoded '+' sign"): New tests.
Fixes <http://bugs.gnu.org/23718>.
Reported by Efraim Flashner <efraim@flashner.co.il>.
* guix/gnu-maintenance.scm (find-packages): Remove.
(find-package): New procedure.
* guix/import/gnu.scm (gnu->guix-package): Use 'find-package' instead of
'find-packages' and adjust accordingly.
* guix/build/bournish.scm (%bournish-language): Add a joiner to SCHEME.
Compile only to Scheme.
* tests/bournish.scm: New file.
* Makefile.am (SCM_TESTS): Add it.
* guix/build/emacs-build-system.scm (gnu:unpack)
(store-file->elisp-source-file, unpack): New procedures.
(%standard-phases): Use the new unpack procedure.
On a warm cache, "guix lint -c cve vorbis-tools" goes down
from 6.5s to 2.4s.
* guix/cve.scm (cpe->package-name): Change to return two values instead
of a pair.
(cpe->product-alist): New procedure.
(%parse-vulnerability-feed): Use it instead of 'filter-map'.
(fetch-vulnerabilities): Bump sexp format version to 1.
(vulnerabilities->lookup-proc): Adjust accordingly. When #:version is
omitted, return a list of vulnerabilities instead of a list of
version/vulnerability pairs.
* tests/cve.scm (%expected-vulnerabilities)
("vulnerabilities->lookup-proc): Adjust accordingly.
Previously, 'guix package -i emacs --with-source=./emacs-42.tar.gz'
would fail to use "42" as the version number in the manifest entry.
Reported by piyo on #guix.
* guix/scripts/package.scm (process-actions)[transform-entry]: Inherit
the version number from the result of TRANSFORM when it's a package.
* tests/guix-package.sh: Test it.
* guix/build/download.scm (ftp-fetch): Add #:timeout and pass it to
'ftp-open'.
(http-fetch): Add #:timeout and pass it to 'open-connection-for-uri' and
in recursive calls.
(url-fetch): Add #:timeout and pass it to 'http-fetch' and 'ftp-fetch'.
This fixes a bug whereby 'http-fetch' would be passed a string instead
of a URI object.
* guix/build/download.scm (url-fetch): Rename 'content-addressed-urls'
to 'content-addressed-uris', and call 'string->uri'.
Currently, with several grafts applicable to Inkscape, this makes:
guix gc -R $(guix build inkscape -d) | wc -l
go from 2376 to 2266 (4.6%).
* guix/grafts.scm (cumulative-grafts): Pass 'graft-derivation/shallow'
the subset of GRAFTS that applies to DRV.
* guix/build/ruby-build-system.scm (build): Move extraction from here ...
(extract-gemspec): ... to here. New variable.
(first-gemspec): New variable.
(%standard-phases): Add 'extract-gemspec' phase.
* guix/scripts/size.scm (display-profile): Display WHOLE at then end.
(guix-size): Accept several FILES.
* doc/guix.texi (Invoking guix size): Add example with several items.
* guix/graph.scm (traverse/depth-first): New procedure, based on code
formerly in 'node-transitive-edges'.
(node-transitive-edges): Rewrite in terms of it.
This avoids ~20s of XML parsing when running 'guix lint -c cve'.
* guix/cve.scm (vulnerability->sexp, sexp->vulnerability)
(fetch-vulnerabilities): New procedures.
(current-vulnerabilities): Use 'fetch-vulnerabilities'.
Fixes <http://bugs.gnu.org/23132>.
Reported by Mark H Weaver <mhw@netris.org>.
* guix/build/graft.scm (rename-matching-files): New procedure.
(rewrite-directory): Use it.
* tests/grafts.scm ("graft-derivation, renaming"): New test.
Before, something like:
echo have /gnu/foo | ./test-env guix substitute --query
would lead to an ugly backtrace.
* guix/scripts/substitute.scm (narinfo-cache-file): Call 'leave' when
'store-hash-part' returns #f.
* guix/derivations.scm (derivation-input<?): New procedure.
(write-derivation)[coalesce-duplicate-inputs]: Remove.
Remove calls to 'sort'.
(coalesce-duplicate-inputs): New procedure.
(derivation-hash): Sort INPUTS and use 'coalesce-duplicate-inputs'.
(derivation)[input->derivation-input]
[coalesce-duplicate-inputs]: New procedures.
Sort OUTPUTS, INPUTS, and ENV-VARS.
* tests/derivations.scm ("read-derivation vs. derivation"): New test.
Previously, something like 'guix import gnu which' would spit out a
backtrace if, say, the 'which' tarball could not be authenticated.
* guix/upstream.scm (download-tarball): Mention failure modes in
docstring.
* guix/import/gnu.scm (gnu-package->sexp): Return #f when
'download-tarball' returns #f.
* guix/scripts/import.scm (guix-import): Call 'leave' when IMPORTER does
not return a (package ...) sexp.
* guix/download.scm (%content-addressed-mirrors)
(%content-addressed-mirror-file): New variables.
* guix/download.scm (url-fetch)[builder]: Define
'value-from-environment. Pass #:hashes and
#:content-addressed-mirrors to 'url-fetch'.
Define "guix download hashes" environment variable.
* guix/build/download.scm (url-fetch): Add #:content-addressed-mirrors
and #:hashes.
[content-addressed-urls]: New variable.
Use it.
This procedure was redundant with SRFI-1's 'break'.
* guix/utils.scm (split): Remove.
* tests/utils.scm ("split, element is in list")
("split, element is not in list"): Remove.
This makes (gnu services herd) independent of (guix ui).
* gnu/services/herd.scm (&shepherd-error, &service-not-found-error)
(&action-not-found-error, &action-exception-error)
(&unknown-shepherd-error): New error condition types.
(report-action-error): Remove.
(raise-shepherd-error): New procedure.
(display-message): Do not use 'info' and '_'.
(invoke-action): Use 'raise-shepherd-error' instead of
'report-action-error'. Do not use 'warning'.
(current-services): Do not use 'warning'.
* guix/scripts/system.scm (with-shepherd-error-handling): New macro.
(report-shepherd-error, call-with-service-upgrade-info): New
procedures.
(upgrade-shepherd-services): Use it.
* guix/build/syscalls.scm (bits->symbols-body, define-bits)
(local-flags): New macros.
(TCSANOW, TCSADRAIN, TCSAFLUSH): New variables.
(<termios>): New record type.
(%termios): New C structure.
(tcgetattr, tcsetattr): New procedures.
* tests/syscalls.scm ("tcgetattr ENOTTY", "tcgetattr")
("tcsetattr"): New tests.
* guix/build/syscalls.scm (bits->symbols-body, define-bits)
(local-flags): New macros.
(TCSANOW, TCSADRAIN, TCSAFLUSH): New variables.
(<termios>): New record type.
(%termios): New C structure.
(tcgetattr, tcsetattr): New procedures.
* tests/syscalls.scm ("tcgetattr ENOTTY", "tcgetattr")
("tcsetattr"): New tests.
This reduces the size of the image produced by 'guix system vm' from
26 MiB to 9 MiB.
* gnu/system/vm.scm (system-qemu-image/shared-store):
(system-qemu-image/shared-store-script): Change the default
value of #:disk-image-size to 30 MiB when not FULL-BOOT?.
* guix/scripts/system.scm (system-derivation-for-action): Likewise for
the 'vm' action.
* guix/scripts/lint.scm (check-vulnerabilities): Check the replacement
of PACKAGE.
* tests/lint.scm ("cve: patched vulnerability in replacement"): New test.
Suggested by John Darrington <john@darrington.wattle.id.au>.
* guix/scripts/challenge.scm (guix-challenge): Exit with 2 when MISSING
is not empty.
* doc/guix.texi (Invoking guix challenge): Document it.
Suggested by John Darrington.
* guix/scripts/lint.scm (check-description-style): Emit a warning when
DESCRIPTION is not a string.
(check-synopsis-style): Likewise.
(check-gnu-synopsis+description): Likewise.
* tests/lint.scm ("description: not a string", "synopsis: not a
string"): New tests.
Modules may be removed from Perl's core, so we must check for a removal
version.
* guix/import/cpan.scm (cpan-module->sexp)[core-module?]: Also check
version upper bound.
* guix/build/syscalls.scm (define-c-struct)[read]: OFFSET defaults to 0.
(unfold-interface-list): Remove second argument to 'read-ifaddrs'.
(terminal-window-size): Remove second argument to 'read-winsize'.
This follows a convention used by some other GNU packages like Autoconf,
Bison, Coreutils, and Gnulib.
* doc.am: Rename to ...
* doc/local.mk: ... this.
* emacs.am: Rename to ...
* emacs/local.mk: ... this.
* gnu-system.am: Rename to ...
* gnu/local.mk: ... this.
* daemon.am: Rename to ...
* nix/local.mk: ... this.
* Makefile.am: Adapt to them.
* doc/guix.texi (Porting to a New Platform): Adapt documentation.
* guix/config.scm.in (%state-directory, %config-directory): Adapt comments.
* emacs/guix-config.el.in (guix-config-state-directory): Likewise.
Suggested by Danny Milosavljevic <dannym@scratchpost.org>.
* guix/build/download.scm (nar-uri-abbreviation): New procedure.
* guix/scripts/substitute.scm (process-substitution): Use it instead of
'store-path-abbreviation'.
* guix/build/syscalls.scm (syscall->procedure): New procedure.
(mount, umount, swapon, swapoff, clone, pivot-root): Use it.
(clone): Add case for nonexistent syscall id.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
* guix/build/syscalls.scm (terminal-columns): Call
'terminal-window-size' only when PORT is a file port.
* tests/syscalls.scm ("terminal-columns non-file port"): New test.
* guix/store.scm (set-build-options): Add #:terminal-columns parameter
and honor it.
* guix/scripts/substitute.scm (client-terminal-columns): New procedure.
(guix-substitute): Use it to parameterize 'current-terminal-columns'.
* guix/build/syscalls.scm (TIOCGWINSZ): New macro.
(<window-size>): New record type.
(winsize): New C struct.
(winsize-struct): New variable.
(terminal-window-size, terminal-columns): New procedures.
Fixes <http://bugs.gnu.org/23275>.
Reported by Albin Söderqvist <albin@fripost.org>.
* guix/build/download.scm (http-fetch): Follow redirections upon 307.
This is what 'binaries.openttd.org' does.
Reported by John Darrington.
* guix/scripts/challenge.scm (guix-challenge): Add an explicit 'exit'
call when ISSUES is empty.
* scripts/guix.in: Add comment about 'exit'.
* doc/guix.texi (Invoking guix challenge): Mention the behavior and exit
code.