publish: Add '--nar-path'.

* guix/scripts/publish.scm (show-help, %options): Add '--nar-path'.
(%default-options): Add 'nar-path'.
(guix-publish): Honor it.

publish: Make the nar URL prefix a parameter.

* guix/scripts/publish.scm (narinfo-string): Add #:nar-path and honor it.
(render-narinfo): Likewise.
(make-request-handler): Likewise.
(run-publish-server): Likewise.
* tests/publish.scm ("custom nar path"): New test.

publish: Add '--public-key' and '--private-key'.

* guix/scripts/publish.scm (show-help, %options): Add --public-key and
--private-key.
* doc/guix.texi (Invoking guix publish): Document it.

publish: The public and private keys are now SRFI-39 parameters.

* guix/scripts/publish.scm (%default-options): Add 'public-key-file' and
'private-key-file'.
(lazy-read-file-sexp): Remove.
(%private-key, %public-key): Turn into SRFI-39 parameters.
(signed-string, render-narinfo): Adjust accordingly.
(guix-publish): Honor 'public-key-file' and 'private-key-file' from
OPTS.  Use 'parameterize'.
* guix/pk-crypto.scm (read-file-sexp): New procedure.
* tests/publish.scm: Initialize '%public-key' and '%private-key'.

http-client: Avoid name clash with 'open-connection-for-uri' in 2.2.0.

* guix/build/download.scm (open-connection-for-uri): Add note about
same-named binding in Guile 2.2.0.
* guix/http-client.scm: Use 'guix:open-connection-for-uri' for the
procedure coming from (guix build download).
* guix/scripts/lint.scm: Likewise.
* guix/scripts/substitute.scm: Likewise.

pack: Add '--target'.

* guix/scripts/pack.scm (self-contained-tarball): Add #:target.
(docker-image): Add #:target.
[build]: Pass it to 'build-docker-image'.
(%options, show-help): Add '--target'.
(guix-pack): Pass TARGET to 'profile-derivation' and to 'build-image'.
* guix/docker.scm (build-docker-image): Add #:system parameter and honor it.
* doc/guix.texi (Invoking guix pack): Document '--target'.
(Additional Build Options): Refer to the Autoconf manual instead of the
obsolete 'configure.info' for cross-compilation.

pack: Move absolute file name to <compressor>.

* guix/scripts/pack.scm (<compressor>)[package]: Remove.
[command]: Document as being a gexp with an absolute file name.
(%compressors): Adjust accordingly.
(self-contained-tarball): Simplify PATH expression.  Move 'string-join'
for the compressor command on the build side.
(docker-image): Simplify PATH expression.
* tests/pack.scm (%gzip-compressor): Adjust accordingly.

pack: Allow for "-S /opt/foo=".

Reported by Andy Wingo.

* guix/scripts/pack.scm (%options): Use 'string-split' instead of
'string-tokenize'.

pack: Honor symlinks in the Docker back-end.

* guix/docker.scm (symlink-source, topmost-component): New procedures.
(build-docker-image): Add #:symlinks parameter and honor it.  Remove
hard-coded /bin symlink.
* guix/scripts/pack.scm (docker-image): Pass #:symlinks to
'build-docker-image'.

pack: Use a fixed timestamp in Docker images.

* guix/docker.scm (build-docker-image): Add #:creation-time parameter.
Use SRFI-19 'date->string' instead of 'strftime' et al.
* guix/scripts/pack.scm (docker-image)[build]: Pass #:creation-time to
'build-docker-image'.

pack: Add '--format' option and Docker output support.

* guix/docker.scm: Remove dependency on (guix store) and (guix utils).
Use (guix build store-copy).  Load (json) lazily.
(build-docker-image): Remove #:system.  Add #:closure, #:compressor, and
'image' parameters.  Use 'uname' to determine the architecture.  Remove
use of 'call-with-temporary-directory'.  Use 'read-reference-graph' to
compute ITEMS.  Honor #:compressor.
* guix/scripts/pack.scm (docker-image): New procedure.
(%default-options): Add 'format'.
(%formats): New variable.
(%options, show-help): Add '--format'.
(guix-pack): Honor '--format'.
* guix/scripts/archive.scm: Remove '--format' option.  This reverts
commits 1545a012cb7cd78e25ed99ecee26df457be590e9,
01445711db6771cea6122859c3f717f130359f55, and
03476a23ff2d4175b7d3c808726178f764359bec.
* doc/guix.texi (Invoking guix pack): Document '--format'.
(Invoking guix archive): Remove documentation of '--format'.

pack: Honor command-line options related to the store.

* guix/scripts/pack.scm (guix-pack): Call
'set-build-options-from-command-line'.

utils: Move base16 procedures to (guix base16).

* guix/utils.scm (bytevector->base16-string, base16-string->bytevector):
Move to...
* guix/base16.scm: ... here.  New file.
* tests/utils.scm ("bytevector->base16-string->bytevector"): Move to...
* tests/base16.scm: ... here.  New file.
* Makefile.am (MODULES): Add guix/base16.scm.
(SCM_TESTS): Add tests/base16.scm.
* build-aux/download.scm, guix/derivations.scm,
guix/docker.scm, guix/import/snix.scm, guix/pk-crypto.scm,
guix/scripts/authenticate.scm, guix/scripts/download.scm,
guix/scripts/hash.scm, guix/store.scm, tests/hash.scm,
tests/pk-crypto.scm: Adjust imports accordingly.

pack: Add unit test.

* guix/scripts/pack.scm (self-contained-tarball): Add #:tar option.
[build](tar-supports-sort?): New variable.  Use it.
* tests/pack.scm: New file.
* Makefile.am (SCM_TESTS): Add it.

pack: Use maximum compression; use '-n' for gzip.

* guix/scripts/pack.scm (<compressor>)[tar-option]: Remove.
[command]: New field.
(%compressors): Provide complete commands.  Use '-9' or equivalent for
each compressor; use '-n' for gzip.
(self-contained-tarball)[build]: Adjust accordingly.

pack: Add '--symlink'.

* guix/scripts/pack.scm (self-contained-tarball): Add #:symlinks
parameter.
[build](symlink->directives): New procedure
(directives): New variable.
Add call to 'evaluate-populate-directive'.  Pass the directories among
DIRECTIVES to 'tar'.
(%default-options): Add 'symlinks'.
(%options, show-help): Add '--symlink'.
(guix-pack): Honor it.
* gnu/build/install.scm (evaluate-populate-directive): Export.
* doc/guix.texi (Invoking guix pack): Document it.

pack: Add '--localstatedir' option.

* guix/scripts/pack.scm (self-contained-tarball): Add #:localstatedir?
parameter and honor it.
(%options, show-help): Add '--localstatedir'.
(guix-pack): Honor it.
* gnu/build/install.scm (populate-single-profile-directory): Add
 #:register? parameter and honor it.
* doc/guix.texi (Binary Installation): Use '--localstatedir' in
example.
(Invoking guix pack): Document it.

pull: Default to HTTPS.

* guix/scripts/pull.scm (%snapshot-url): Use HTTPS.
(guix-pull): Authenticate against LE-CERTS when URL is from Savannah.

Add 'guix pack'.

* gnu/system/install.scm (self-contained-tarball): Move to...
* guix/scripts/pack.scm: ... here.  New file.
* doc/guix.texi (Binary Installation): Mention 'guix pack'.
(Invoking guix pack): New node.
* build-aux/make-binary-tarball.scm: Remove.
* Makefile.am (MODULES): Add guix/scripts/pack.scm.
(EXTRA_DIST): Remove build-aux/make-binary-tarball.scm.
(guix-binary.%.tar.xz): Rewrite using 'guix pack'.
* build-aux/hydra/gnu-system.scm (tarball-jobs): Adjust accordingly.

guix archive: Allow compilation with Guile 2.2.

* guix/scripts/archive.scm (export-from-store): Avoid shadowing the
top-level '_'.