doc: Add the stub of a manual.

* doc/guix.texi: New file.
* doc/fdl-1.3.texi: New file, copied from Gnulib.

* Makefile.am (info_TEXINFOS): New variable.
  (EXTRA_DIST): Add `doc/fdl-1.3.texi'.

distro: Add missing bits from previous commit.

* distro/packages/base.scm (default-keyword-arguments): New procedure.

distro: First stab at building statically-linked bootstrap binaries.

* distro/packages/base.scm (static-package): New procedure.
  (%bash-static, %static-inputs, %static-binaries): New variables.

Remove non-existent module from (guix).

* guix.scm (%public-modules): Remove `snix', since that modules doesn't
  exist yet.

packages: Fix and optimize memoization of `package-derivation'.

* guix/packages.scm (%derivation-cache): Pass an initial size of 100.
  (cache): Use `hashq-set!', and use a SYSTEM/DRV pair as the value.
  (cached-derivation): Update accordingly.

packages: Micro-optimize `package-derivation'.

* guix/packages.scm (package-derivation): Move `cache' call before the
  traversal of PACKAGE's inputs.

derivations: Set input port to UTF-8 in `read-derivation'.

* guix/derivations.scm (read-derivation): Set DRV-PORT's encoding to
  UTF-8.

Update the (guix) module.

* guix.scm (%public-modules): Update list of current second-level
  modules.

tests: Use bootstrap and Nixpkgs inputs to be less costly.

* tests/builders.scm (%bootstrap-inputs, %bootstrap-guile): New
  variables.
  ("gnu-build"): Use them, by setting `#:implicit-inputs? #f' and `#:guile'.

* tests/packages.scm (%bootstrap-inputs, %bootstrap-guile): New
  variables.
  ("trivial"): Pass `#:guile %bootstrap-guile'.
  ("GNU Hello"): Use `package-with-explicit-inputs' to use
  %BOOTSTRAP-GUILE and %BOOTSTRAP-INPUTS.

build-system/{gnu,trivial-build}: Fix handling of #:guile argument.

* guix/build-system/gnu.scm (gnu-build)[guile-for-build]: Check whether
  GUILE matches string? before checking whether it matches
  derivation-path?.
* guix/build-system/trivial.scm (trivial-build)[guile-for-build]:
  Likewise.

distro: Specify use of the bootstrap Guile for the initial derivations.

* distro/packages/base.scm (%bootstrap-guile): New variable.
  (gnu-make-boot0, diffutils-boot0, findutils-boot0, binutils-boot0,
  gcc-boot0, linux-headers-boot0, glibc-final, gcc-boot0-wrapped,
  gcc-final, ld-wrapper-boot3, bash-final, guile-final): Add
  `#:guile %bootstrap-guile' to the builder's arguments.

build-system/{gnu,trivial}: Add a `#:guile' keyword parameter.

* guix/build-system/gnu.scm (package-with-explicit-inputs): New `guile'
  keyword parameter.  Add it to P's arguments, and pass it in recursive
  calls.
  (gnu-build): New `guile' keyword parameter; new `guile-for-build'
  variable.  Pass it as the `#:guile-for-build' parameter of
  `build-expression->derivation'.

* guix/build-system/trivial.scm (trivial-build): Likewise.

Support build-cores = 0; change `guix-build' to default to 0.

* guix/build/gnu-build-system.scm (%parallel-job-count): New variable.
  (build, check): Use it instead of $NIX_BUILD_CORES.

* guix-build.in (guix-build): Default to 0 for the #:build-cores option.

Augment `README'.

* README (Hacking): Mention `--with-nixpkgs'.  List the autotools and
  Gettext, as suggested by Nikita Karetnikov <nikita.karetnikov@gmail.com>.

distro: Fix typo in warning message.

* distro.scm (package-files): Add missing newline in warning message.

Add `pre-inst-env' script.

* pre-inst-env.in: New file.
* configure.ac: Add it to `AC_CONFIG_FILES' and `AC_CONFIG_COMMANDS'.

Fix and update `POTFILES.in'.

* po/POTFILES.in: Update.

distro: Add libgc.

* distro/packages/base.scm (libgc): New variable.
  (guile-2.0): Use it.

distro: Add pkg-config.

* distro/packages/base.scm (pkg-config): New variable.
  (guile-2.0): Use it.
* distro/packages/guile.scm (guile-reader): Likewise.

distro: Add the `guile', `typesetting', and `databases' package modules.

* distro.scm (package-files): Adjust PREFIX-LEN to use the top-level
  directory, not %DISTRO-MODULE-DIRECTORY.
* distro/packages/base.scm (guile-reader, guile-reader/guile-1.8,
  guile-reader/guile-2.0, lout, recutils): Move to...
* distro/packages/guile.scm, distro/packages/typesetting.scm,
  distro/packages/databases.scm: ... here.  New files.
* Makefile.am (MODULES): Add them.
  (EXTRA_DIST): Add `.dir-locals.el'.

* .dir-locals.el: New file, with settings formerly in `base.scm'.