doc: Transparent binary deployment is implemented.

* doc/guix.texi (Features): Remove footnote saying that transparent
  binary deployment is not implemented.

guix package: Allow the search of the latest release to be interrupted.

* guix/scripts/package.scm (%sigint-prompt): New variable.
  (call-with-sigint-handler): New procedure.
  (waiting): Use it.

build: Add `sync-synopses.scm'.

* build-aux/sync-synopses.scm: New file.
* Makefile.am (EXTRA_DIST): Add it.
  (dist-hook): New target.

gnu: Use synopses from the Womb.

* gnu/packages/algebra.scm,
  gnu/packages/aspell.scm,
  gnu/packages/autotools.scm,
  gnu/packages/base.scm,
  gnu/packages/bash.scm,
  gnu/packages/bison.scm,
  gnu/packages/cdrom.scm,
  gnu/packages/cflow.scm,
  gnu/packages/compression.scm,
  gnu/packages/cpio.scm,
  gnu/packages/cppi.scm,
  gnu/packages/ddrescue.scm,
  gnu/packages/dejagnu.scm,
  gnu/packages/ed.scm,
  gnu/packages/emacs.scm,
  gnu/packages/fdisk.scm,
  gnu/packages/gawk.scm,
  gnu/packages/gcc.scm,
packages/gcc.scm, b/gnu/packages/gcc.scm,
4b982 100644
s/gcc.scm,
s/gcc.scm,
@@
         %standard-phases)))))

 `((gcc-libc . ,(assoc-ref inputs "libc"))))
The GNU Compiler Collection")
GNU Compiler Collection")
n
ompiler Collection includes compiler front ends for C, C++,
tran, OpenMP for C/C++/Fortran, Java, and Ada, as well as
  gnu/packages/gdb.scm,
  gnu/packages/gettext.scm,
  gnu/packages/ghostscript.scm,
  gnu/packages/glib.scm,
  gnu/packages/global.scm,
  gnu/packages/gnupg.scm,
  gnu/packages/gnutls.scm,
  gnu/packages/gperf.scm,
  gnu/packages/gprolog.scm,
  gnu/packages/groff.scm,
  gnu/packages/grub.scm,
  gnu/packages/gsasl.scm,
  gnu/packages/guile.scm,
  gnu/packages/help2man.scm,
  gnu/packages/idutils.scm,
  gnu/packages/indent.scm,
  gnu/packages/less.scm,
  gnu/packages/libidn.scm,
  gnu/packages/libsigsegv.scm,
  gnu/packages/libunistring.scm,
  gnu/packages/linux.scm,
  gnu/packages/lsh.scm,
  gnu/packages/m4.scm,
  gnu/packages/mailutils.scm,
  gnu/packages/multiprecision.scm,
  gnu/packages/nano.scm,
  gnu/packages/ncurses.scm,
  gnu/packages/nettle.scm,
  gnu/packages/oggvorbis.scm,
  gnu/packages/parted.scm,
  gnu/packages/pth.scm,
  gnu/packages/readline.scm,
  gnu/packages/recutils.scm,
  gnu/packages/scheme.scm,
  gnu/packages/screen.scm,
  gnu/packages/shishi.scm,
  gnu/packages/smalltalk.scm,
  gnu/packages/system.scm,
  gnu/packages/texinfo.scm,
  gnu/packages/time.scm,
  gnu/packages/wdiff.scm,
  gnu/packages/wget.scm,
  gnu/packages/which.scm: Use synopses from the Womb.

ui: Fix format string in `warning'.

* guix/ui.scm (warning)[augmented-format-string]: Add missing ~*.

scripts: Report what will be substituted.

* guix/derivations.scm (derivation-input-output-paths): New procedure.
  (derivation-prerequisites-to-build): New `use-substitutes?' keyword
  argument.  Change two return the list of substitutable paths as a
  second argument.
* guix/ui.scm (show-what-to-build): Turn `dry-run?' into a keyword
  argument.  New `use-substitutes?' keyword argument.  Use `fold2' and
  adjust to use both return values of
  `derivation-prerequisites-to-build'.  Display what will/would be
  downloaded.
* guix/scripts/build.scm (guix-build): Adjust accordingly.
* guix/scripts/package.scm (guix-package): Likewise.
* tests/derivations.scm ("derivation-prerequisites-to-build and
  substitutes"): New test.

package: allow users to upgrade the whole system by not providing a regexp.

* guix/scripts/packages.scm (guix-package) [process-actions]: When upgrading,
use "" when REGEXP is #f.
* doc/guix.texi: update the documentation accordingly.

gnu: Python: bump to version 2.7.4.

* gnu/packages/python.scm: bump to version 2.7.4, remove references to
python-fix-dbm.patch.
* Makefile.am: remove references to python-fix-dbm.patch
* gnu/packages/patches/python-fix-dbm.patch: remove it.

substitute-binary: Skip servers that use a different store prefix.

* guix/scripts/substitute-binary.scm (fetch-narinfo): Return #f when
  CACHE uses a store directory different from (%store-prefix).

substitute-binary: Call `open-cache' only when needed.

* guix/scripts/substitute-binary.scm (lookup-narinfo): Force CACHE when
  passing it to `fetch-narinfo'.
  (guix-substitute-binary): Delay calls to `open-cache'.

substitute-binary: Add a local cache.

* guix/scripts/substitute-binary.scm (%narinfo-cache-directory,
  %narinfo-ttl, %narinfo-negative-ttl): New variables.
  (with-atomic-file-output, object->fields, read-narinfo,
  write-narinfo, narinfo->string, string->narinfo, lookup-narinfo): New
  procedures.
  (fetch-narinfo): Adjust to use `read-narinfo'.
  (guix-substitute-binary): Ensure the existence of
  %NARINFO-CACHE-DIRECTORY.  Use `lookup-narinfo' instead of
  `fetch-narinfo'.

gnu: automake: Restore shebangs on files that end up in user tarballs.

* gnu/packages/autotools.scm (automake): Add `unpatch-shebangs' phase.

utils: Add `fold2'.

* gnu/packages.scm (fold2): Remove.
* guix/utils.scm (fold2): New procedure.  Generalization of the above to
  one and two lists.
* tests/utils.scm ("fold2, 1 list", "fold2, 2 lists"): New tests.

tests: Remove temporary directory created by nar.scm.

* tests/nar.scm ("write-file + restore-file with symlinks"): Add (rm-rf
  output).

store: Remove unneeded and conflicting import.

* guix/store.scm: Remove unneeded (ice-9 rdelim) import.  In Guile 2.0.9
  that module exports `read-string', which conflicts with that of (guix
  serialization).

package: Being at the empty profile is not an error.

* guix/scripts/package.scm (roll-back): Use `format', not `leave' when
  indicating "already at the empty profile".  Fixes a regression
  introduced in a2011be5dfaf2b94a1d0e3dfbcf4b512389b4711.  Reported by
  Nikita Karetnikov <nikita@karetnikov.org>.

Update `TODO'.

guix package: Add `--no-substitutes'.

* guix/scripts/package.scm (%default-options): Add `substitutes?'.
  (show-help, %options): Add and document `--no-substitutes'.
  (guix-package): Call `set-build-options' to honor `substitutes?'.

substitute-binary: Implement `--substitute'.

This allows build outputs to be transparently downloaded from
http://hydra.gnu.org, for example.

* config-daemon.ac: Check for `gzip', `bzip2', and `xz'.
* guix/config.scm.in (%gzip, %bzip2, %xz): New variable.
* guix/scripts/substitute-binary.scm (fetch): Return SIZE as a second value.
  (<narinfo>): Change `url' to `uri'.
  (make-narinfo): Rename to...
  (narinfo-maker): ... this.  Handle relative URLs.
  (fetch-narinfo): Adjust accordingly.
  (filtered-port, decompressed-port): New procedures.
  (guix-substitute-binary): Implement the `--substitute' case.
* tests/store.scm ("substitute query"): Use (%store-prefix) instead
  of (getenv "NIX_STORE_DIR").
  ("substitute"): New test.

substitute-binary: Correctly handle missing narinfos in `--query' mode.

* guix/scripts/substitute-binary.scm (guix-substitute-binary)["--query"]("have",
  "info"): Filter SUBSTITUTABLE through `narinfo?'.