build: Add 'clean-go' target.

* Makefile.am (clean-go): New phony target.

build: 'sync-descriptions' now compares GNU package descriptions.

* build-aux/sync-synopses.scm: Rename to...
* build-aux/sync-descriptions.scm: ... this.  Compare the value of
  'gnu-package-doc-description' and 'package-description' and report any
  mismatch.
* Makefile.am (EXTRA_DIST): Adjust accordingly.
  (sync-synopses): Rename to...
  (sync-descriptions): ... this.

Add (guix monads).

* guix/monads.scm: New file.
* tests/monads.scm: New file.
* Makefile.am (MODULES): Add guix/monads.scm.
  (SCM_TESTS): Add tests/monads.scm.
* doc/guix.texi (The Store Monad): New node.
  (The Store): Reference it.

Merge branch 'master' into core-updates

Add 'guix-register'.

* nix/guix-register/guix-register.cc, tests/guix-register.sh: New
  files.
* Makefile.am (SH_TESTS)[BUILD_DAEMON]: Add tests/guix-register.sh.
* daemon.am (sbin_PROGRAMS, guix_register_SOURCES,
  guix_register_CPPFLAGS, guix_register_LDADD): New variables.
* test-env.in: Export 'storedir', 'prefix', 'datarootdir', 'datadir',
  and 'localstatedir'.

Merge branch 'master' into core-updates

build: Build docs from the top-level Makefile.

This undoes commit 575ed8d ("doc: Create own Makefile.am in subdirectory."),
and fixes a bug whereby "make pdf" or "make ps" wouldn't do anything.

* doc/Makefile.am: Remove.
* doc.am: New file.  Use `-local' rules to build the image.
* Makefile.am: Include it.
* configure.ac: Use `-Woverride' to avoid undesired overridding of
  Automake rules.

gnu: linux-initrd: Add (guix build linux-initrd) and use it.

* gnu/packages/linux-initrd.scm (qemu-initrd): Add #:modules argument.
  Factorize and move some of the code to...
* guix/build/linux-initrd.scm: ... here.  New file.
* Makefile.am (MODULES): Add it.

doc: Create own Makefile.am in subdirectory.

* doc/Makefile.am: New file.
* Makefile.am: Reference subdirectory doc.

hydra: Add job to run "make distcheck" on Guix.

* build-aux/hydra/guix.scm: New file.
* Makefile.am (EXTRA_DIST): Add it.

build-system/gnu: Add `dist-package'.

* guix/build/gnu-dist.scm: New file.
* Makefile.am (MODULES): Add it.
* guix/build-system/gnu.scm (%default-modules): New variable.
  (gnu-build): Use it.
  (dist-package): New procedure.

build: Provide a replacement (srfi srfi-37) when the user's one is broken.

* srfi/srfi-37.scm.in: New file, taken from Guile 2.0.9.
* m4/guix.m4: New macro.
* configure.ac: Use it.  Define Automake conditional `INSTALL_SRFI_37'.
* Makefile.am (nobase_nodist_guilemodule_DATA)[INSTALL_SRFI_37]: Add
  srfi/srfi-37.scm.
  (GOBJECTS)[INSTALL_SRFI_37]: Add srfi/srfi-37.go.
  (srfi/srfi-37.scm)[INSTALL_SRFI_37]: New target.
  (EXTRA_DIST): Add srfi/srfi-37.scm.in.

build: Check for the availability of binaries upon "distcheck".

* build-aux/check-available-binaries.scm: New file.
* Makefile.am (EXTRA_DIST): Add it.
  (distcheck-hook, assert-binaries-available): New target.

Rename (guix web) to (guix http-client).

* guix/web.scm: Rename to...
* guix/http-client.scm: ... this.
* guix/gnu-maintenance.scm, guix/scripts/substitute-binary.scm,
  Makefile.am, po/POTFILES.in: Update accordingly.

Add `build-aux/list-packages.scm'.

* build-aux/list-packages.scm: New file.
* Makefile.am (EXTRA_DIST): Add it.

Merge branch 'core-updates'

doc: Add a "Boostrapping" section.

* doc/guix.texi (Package Modules): New node, with material formerly
  under "GNU Distribution".
  (Bootstrapping): New node.
* Makefile.am (EXTRA_DIST): Add doc/images/bootstrap-graph.dot and
  doc/images/bootstrap-graph.eps.
  (infoimagedir, dist_infoimage_DATA, DOT_OPTIONS): New variable.
  (.dot.png, .dot.eps, doc/guix.pdf, doc/guix.info, doc/guix.ps): New
  targets.
* doc/images/bootstrap-graph.dot: New file.

hash: Add `open-sha256-port'.

* guix/hash.scm (GCRY_MD_SHA256): New macro.
  (sha256): Use it.
  (open-sha256-md, md-write, md-read, md-close, open-sha256-port,
  port-sha256): New procedures.
* tests/hash.scm: New file.
* Makefile.am (SCM_TESTS): Add it.

Move `sha256' to (guix hash).

* guix/utils.scm (sha256): Move to...
* guix/hash.scm: ... here.  New file.
* Makefile.am (MODULES): Add it.
* guix/derivations.scm, guix/scripts/download.scm,
  guix/scripts/hash.scm, guix/scripts/refresh.scm, tests/base32.scm,
  tests/derivations.scm, tests/store.scm: Use (guix hash).

build-system/gnu: Unify with (guix build-system gnu-cross-build).

* guix/build/gnu-build-system.scm (set-paths): Add `native-inputs' and
  `native-search-paths' keyword parameters.  Honor them.
  (configure): Add `target' and `native-inputs' keyword parameters.
  Look for Bash in NATIVE-INPUTS or INPUTS.  Pass `--host' when TARGET
  is true.
  (strip): Add `strip-command' keyword parameter.  Use it.
* guix/build/gnu-cross-build.scm: Remove.
* Makefile.am (MODULES): Adjust accordingly.
* gnu/packages/acl.scm, gnu/packages/attr.scm, gnu/packages/base.scm,
  gnu/packages/bash.scm, gnu/packages/gawk.scm,
  gnu/packages/gettext.scm, gnu/packages/guile.scm,
  gnu/packages/libffi.scm, gnu/packages/libsigsegv.scm,
  gnu/packages/linux.scm, gnu/packages/ncurses.scm,
  gnu/packages/readline.scm, guix/build-system/gnu.scm: Replace
  `%standard-cross-phases' by `%standard-phases'.  Remove references
  to (guix build gnu-cross-build).