install: Add bash-completion to the packages.

* gnu/system/install.scm (installation-os)[packages]: Add
  BASH-COMPLETION.

system: Make /gnu/store a read-only bind mount by default.

* gnu/system/file-systems.scm (%immutable-store): New variable.
  (%base-file-systems): Add it.
* doc/guix.texi (File Systems): Document it.

Merge branch 'master' into core-updates

Conflicts:
	gnu-system.am
	gnu/packages/gstreamer.scm

install: Add a procedure to build a self-contained binary tarball.

Suggested by Pjotr Prins <pjotr.public12@thebird.nl>
at <http://lists.gnu.org/archive/html/guix-devel/2015-04/msg00229.html>.

* gnu/build/install.scm (populate-single-profile-directory): New procedure.
* gnu/system/install.scm (self-contained-tarball): New procedure.
* Makefile.am (guix-binary.%.tar.xz): New target.

Merge branch 'master' into core-updates

linux-initrd: Add virtio drivers by default.

* gnu/system/linux-initrd.scm (base-initrd): Change #:virtio? default
  to #t.  This will facilitate the use of GuixSD in VM guests.

system: Take kernel modules from the user-specified kernel.

* gnu/system/linux-initrd.scm (base-initrd): Add #:linux option to
  specify the linux kernel to use.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Propagate
  #:linux to base-initrd.
* gnu/system.scm (operating-system-initrd-file): Pass #:linux to
  'make-initrd'.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>

Merge branch 'master' into core-updates

system: Skeleton '.bashrc' now exports the 'SHELL' variable.

* gnu/system/shadow.scm (default-skeletons)[bashrc]: Export 'SHELL'.

system: Adjust '.bashrc' skeleton for non-interactive SSH sessions.

* gnu/system/shadow.scm (default-skeletons)[bashrc]: Source /etc/profile
  when in a non-interactive SSH session.

system: Don't compare <pam-service> objects with 'equal?'.

Fixes <http://bugs.gnu.org/20037>.
Reported by 宋文武 <iyzsong@gmail.com> and Tomáš Čech.

* gnu/system.scm (operating-system-etc-directory): Remove call to
  'delete-duplicates'.
* gnu/system/linux.scm (pam-services->directory)[builder]: Add call to
  'delete-duplicates'.

doc: Add 'packages' field to OS configuration template.

* gnu/system/os-config.tmpl (packages): New field.

Merge branch 'master' into core-updates

artwork: Update snapshot to GuixSD branding.

* gnu/artwork.scm (%artwork-repository): Update to new "GuixSD"
  branding.
* gnu/system/grub.scm (%background-image, %default-theme): Adjust
  accordingly.

linux-initrd: Add 'isci' module, needed for some SAS controllers.

Encountered on a Dell Precision T3600.

* gnu/system/linux-initrd.scm (base-initrd)[linux-modules]: Add isci.

gnu: wpa-supplicant: Add dbus support; add wpa-supplicant-light.

* gnu/packages/admin.scm (wpa-supplicant-light): New variable containing the
  previous dbus-free package, but renamed.  Remove outdated TODO comments.
  (wpa-supplicant): Now inherits from wpa-supplicant-light but adds dbus
  support.
* gnu/system/install.scm (installation-os): Use wpa-supplicant-light.

system: Add bindings to configure libc's NSS.

* gnu/system/nss.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.
* gnu.scm (%public-modules): Add it.
* gnu/system.scm (<operating-system>)[name-service-switch]: New field.
  (etc-directory): Add #:nss parameter and honor it.
  (operating-system-etc-directory): Adjust call accordingly.
* doc/guix.texi (operating-system Reference): Document
  'name-service-switch'.
  (Name Service Switch): New section.

install: Add iw to the packages.

* gnu/system/install.scm (installation-os)[packages]: Add IW.

linux-initrd: Add USB kernel modules to the default initrd.

* gnu/system/linux-initrd.scm (base-initrd)[linux-modules]: Add
  usb-storage, uas, usbkbd, and usbhid.
* gnu/system/vm.scm (system-disk-image): Remove #:extra-modules argument
  to 'base-initrd'.

install: Mention GSD.

* gnu/system/install.scm (installation-services): Mention the Guix
  System Distribution.