* gnu/system.scm (local-host-aliases): New procedure.
  (default-/etc/hosts): Use it.

* gnu/packages/boost.scm (boost): Add zlib to inputs.

* gnu/packages/linux.scm (eudev)[version]: Fix typo.
  [source]: Add 'snippet'.

* gnu/packages/pdf.scm (mupdf): Update to 1.6.

* gnu/packages/pdf.scm (mupdf)[source]: Download from the archive
  subdirectory, where both old and new versions are kept.

* gnu/packages/linux.scm (eudev): Update to version 1.10.

* gnu/packages/rdf.scm (clucene): Enable the contribs-lib directory.

* gnu/packages/xorg.scm (libxdamage): Move all existing inputs
  to propagated-inputs.

* gnu/packages/patches/net-tools-bitrot.patch: New file.
* gnu/packages/linux.scm (net-tools): Use it.
* gnu-system.am (dist_patch_DATA): Add it.

* emacs/guix-main.scm (process-package-actions): Use 'with-store'.

* gnu/packages/scheme.scm (mit-scheme)[supported-systems]: New field.

* guix/packages.scm (%supported-systems): New variable.
  (<package>)[platforms]: Rename to...
  [supported-systems]: ... this.  Change default to %SUPPORTED-SYSTEMS.
* build-aux/hydra/gnu-system.scm (job-name, package->job): New
  procedures, formerly in 'hydra-jobs'.  Honor 'package-supported-systems'.
  (hydra-jobs): Use them.

* README (Requirements): Add Guile-JSON.
* doc/guix.texi (Requirements): Likewise.

* gnu/packages/linux.scm (linux-libre): Update to version 3.17.

* gnu/packages/feh.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

Fixes <http://bugs.gnu.org/18639>.
Reported by Mark H Weaver <mhw@netris.org>.

* gnu/packages/libdaemon.scm (libdaemon)[source]: Add Debian and Fedora
  mirrors.

* gnu/packages/linux.scm (libogg): Update to version 3.16.4.

* gnu/packages/patches/xpdf-constchar.patch: Remove.
* gnu-system.am (dist_patch_DATA): Remove it.
* gnu/packages/pdf.scm (xpdf): Update to 3.04.  Remove patch.
  Add libpng as an input.

* guix/build-system/trivial.scm (lower): Initialize the 'target' field.

* gnu/packages/glib.scm (dbus): Move PKG-CONFIG to 'native-inputs'.

* gnu/packages/glib.scm (dbus)[arguments]: Add 'post-install' phase.

* gnu/packages/glib.scm (dbus): Update to 1.8.8.

* doc/emacs.texi (emacs List buffer): Mention new key bindings.
* emacs/guix-base.el (guix-delete-generations): New procedure.
* emacs/guix-info.el (guix-generation-info-insert-number): Use it.
* emacs/guix-list.el (guix-generation-list-mark-delete,
  guix-generation-list-execute): New procedures.
* emacs/guix-main.scm (delete-generations*): New procedure.

* guix/build-system.scm (<bag>)[system, target]: New fields.
  (make-bag): Add #:system parameter and pass it to LOWER.
* gnu/packages/bootstrap.scm (make-raw-bag): Initialize 'system' field.
* guix/build-system/cmake.scm (lower): Likewise.
* guix/build-system/perl.scm (lower): Likewise.
* guix/build-system/python.scm (lower): Likewise.
* guix/build-system/ruby.scm (lower): Likewise.
* guix/build-system/trivial.scm (lower): Likewise.
* guix/build-system/gnu.scm (lower): Initialize 'system' and 'target'
  fields.
* guix/packages.scm (bag->derivation, bag->cross-derivation): New
  procedures.
  (package-derivation, package-cross-derivation): Use 'bag->derivation'.
* tests/packages.scm ("search paths"): Initialize 'system' and 'target'
  fields.
  ("package->bag", "package->bag, cross-compilation", "bag->derivation",
  "bag->derivation, cross-compilation"): New tests.

* gnu/packages/cross-base.scm (cross-gcc-arguments): Parametrize
  %CURRENT-TARGET-SYSTEM.
* tests/monads.scm ("package-file + package->cross-derivation"): Replace
  "foo64-gnu" with "mips64el-linux-gnu".

* gnu/packages/cross-base.scm (cross-gcc-arguments): New procedure.
  (cross-gcc): Use it.  [No functional change.]

* guix/build-system.scm (<build-system>)[build, cross-build]: Remove.
  [lower]: New field.
  (<bag>): New record type.
  (make-bag): New procedure.
* guix/packages.scm (bag-transitive-inputs, bag-transitive-build-inputs,
  bag-transitive-host-inputs, bag-transitive-target-inputs,
  package->bag): New procedures.
  (package-derivation): Use it; use the bag, apply its build procedure,
  etc.
  (package-cross-derivation): Likewise.
* gnu/packages/bootstrap.scm (raw-build, make-raw-bag): New procedure.
  (%bootstrap-guile): Use them.
* guix/build-system/trivial.scm (lower): New procedure.
  (trivial-build, trivial-cross-build): Remove 'source' parameter.  Pass
  INPUTS as is.
  (trivial-build-system): Adjust accordingly.
* guix/build-system/gnu.scm (%store, inputs-search-paths,
  standard-search-paths, expand-inputs, standard-inputs): Remove.
  (gnu-lower): New procedure.
  (gnu-build): Remove 'source' and #:implicit-inputs? parameters.
  Remove 'implicit-inputs' and 'implicit-search-paths' variables.  Get
  the source from INPUT-DRVS.
  (gnu-cross-build): Likewise.
  (standard-cross-packages): Remove call to 'standard-packages'.
  (standard-cross-inputs, standard-cross-search-paths): Remove.
  (gnu-build-system): Remove 'build' and 'cross-build'; add 'lower'.
* guix/build-system/cmake.scm (lower): New procedure.
  (cmake-build): Remove 'source' and #:cmake parameters.  Use INPUTS and
  SEARCH-PATHS as is.  Get the source from INPUTS.
* guix/build-system/perl.scm: Likewise.
* guix/build-system/python.scm: Likewise.
* guix/build-system/ruby.scm: Likewise.
* gnu/packages/cross-base.scm (cross-gcc): Change "cross-linux-headers"
  to "linux-headers".
  (cross-libc)[xlinux-headers]: Pass #:implicit-cross-inputs? #f.
  Likewise.  In 'propagated-inputs', change "cross-linux-headers" to
  "linux-headers".
* guix/git-download.scm (git-fetch): Use 'standard-packages' instead of
  'standard-inputs'.
* tests/builders.scm ("gnu-build-system"): Remove use of
  'build-system-builder'.
  ("gnu-build"): Remove 'source' and #:implicit-inputs? arguments to
  'gnu-build'.
* tests/packages.scm ("search paths"): Adjust to new build system API.
  ("package-cross-derivation, no cross builder"): Likewise.
* doc/guix.texi (Build Systems): Add paragraph on bags.

* guix/build-system/gnu.scm (gnu-build, gnu-cross-build): Remove comment
  about case where GUILE is a derivation path.
* guix/build-system/cmake.scm (cmake-build): Remove case where GUILE is
  a derivation path.
* guix/build-system/perl.scm (perl-build): Likewise.
* guix/build-system/python.scm (python-build): Likewise.
* guix/build-system/ruby.scm (ruby-build): Likewise.
* guix/build-system/trivial.scm (guile-for-build): Likewise.

* guix/utils.scm (strip-keyword-arguments): New procedure.
* tests/utils.scm ("strip-keyword-arguments"): New test.

* guix/scripts/package.scm: Export 'roll-back', 'delete-generation',
  'delete-generations'.
  (link-to-empty-profile, roll-back): Add 'store' argument.
  (delete-generations): New procedure.
  (guix-package): Adjust accordingly.
  [delete-generation]: Move to the top level.  Add 'store' and 'profile'
  arguments.
  [display-and-delete]: Move to 'delete-generation'.

* gnu/packages/version-control.scm (bazaar): Update to version 2.6.0.

* gnu/packages/version-control.scm (git): Fix source uri by switching
    to kernel.org.

* gnu/packages/version-control.scm (git): Update to 2.1.2.

* guix/build-system/cmake.scm (cmake-build): Add #:build-type.  Pass it
  in BUILDER.
* guix/build/cmake-build-system.scm (configure): Add #:build-type
  parameter and honor it.
* doc/guix.texi (Build Systems): Document #:configure-flags and
  #:build-type for CMake.

* gnu/packages/maths.scm (pspp): Upgrade to 0.8.4.

* gnu/packages/gnustep.scm (windowmaker): Update to 0.95.6.

* guix/ui.scm (size->number): Add a bunch of large units.  Recognize
  one-letter unit names.  Change "KB" to "kB".
* tests/ui.scm ("size->number, 1T"): New test.
* doc/guix.texi (Invoking guix gc): Add cross-reference to "Block size"
  in the Coreutils manual.
  (Invoking guix system): Likewise.

* guix/download.scm (url-fetch): When URL is a string, if it's not a URI
  or if it's a URI with 'file' or #f scheme, use 'add-to-store'.
* tests/builders.scm ("url-fetch, file", "url-fetch, file URI"): New
  tests.

* emacs/guix-base.el (guix-operation-option-key): New face.
  (guix-operation-option-true-string, guix-operation-option-false-string,
  guix-operation-option-separator, guix-operation-options): New variables.
  (guix-operation-option-by-key, guix-operation-option-key,
  guix-operation-option-name, guix-operation-option-variable,
  guix-operation-option-value, guix-operation-option-string-value,
  guix-operation-prompt, guix-operation-set-mode-line): New procedures.
  (guix-continue-package-operation-p): Use 'guix-operation-prompt'.

* gnu/packages/flashing-tools.scm (dfu-programmer): New variable.
* gnu/packages/patches/dfu-programmer-fix-libusb.patch: New patch.
* gnu-system.am (dist_patch_DATA): Add it.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>