gnu: qt: Upgrade to 5.2.1.

* gnu/packages/qt.scm (qt): Upgrade to 5.2.1.

daemon: Don't abort when $PATH is undefined.

* nix/nix-daemon/guix-daemon.cc (main): Check whether getenv ("PATH")
  returns NULL before blindly initializing 'search_path'.  Before that
  'guix-daemon' would abort when run in an environment where 'PATH' is
  undefined.

nar: 'restore-file-set' registers the temporary result as a GC root.

* guix/nar.scm (temporary-store-directory): Use 'add-indirect-root', not
  'add-temp-root'.  Reported by Andreas Enge <andreas@enge.fr> at
  <https://lists.gnu.org/archive/html/guix-devel/2014-04/msg00161.html>.

doc: Expect to fix typo.

* doc/guix.texi (Build Systems): "except" it is.

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

gnu: linux-libre: Add SIS hardware compatibility.

* gnu/packages/linux.scm (linux-libre): Add CONFIG_SATA_SIS=y,
  CONFIG_SIS190=y and CONFIG_DEVPTS_MULTIPLE_INSTANCES=y.

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

build: Bump to version 0.7.

* configure.ac: Switch to 0.7.

Update '.po' files.

hydra: Make demo OS smaller.

* build-aux/hydra/demo-os.scm: Replace Emacs with Zile.  Enable
  auto-login as "guest".  This is the configuration used for the Guix
  0.6 VM image.

gnu: linux-initrd: Mount /dev/pts at boot time.

* guix/build/linux-initrd.scm (make-essential-device-nodes): Remove
  'mount' call for /dev/pts.
  (boot-system): Add it here, after 'chroot' call.

gnu: linux-initrd: Better populate /dev.

* guix/build/linux-initrd.scm (make-essential-device-nodes): Make
  /dev/{ptmx,tty} world-writable.  Build additional character devices.

system: Initialize $PATH before starting dmd services.

* gnu/services/dmd.scm (dmd-configuration-file): Call 'setenv' before
  starting services.

gnu: guix: Upgrade to 0.6.

* gnu/packages/package-management.scm (guix): Upgrade to 0.6.
* gnu/services/dmd.scm (dmd-configuration-file): Change /var/nix to
  /var/guix.
* gnu/system/vm.scm (operating-system-default-contents): Likewise.

Update 'NEWS'.

vm: Add #:memory-size parameter for 'expression->derivation-in-linux-vm'.

* gnu/system/vm.scm (expression->derivation-in-linux-vm): Add
  #:memory-size parameter, defaulting to 256 (QEMU defaults to 128.)

gnu: linux-initrd: Default initrd has no network mounts.

* gnu/system/linux-initrd.scm (gnu-system-initrd): Add #:mounts
  argument.

vm: 'expression->derivation-in-linux-vm' uses QEMU virtfs/9p.

* gnu/system/vm.scm (expression->derivation-in-linux-vm): Change #:qemu
  to default to QEMU-HEADLESS.  Use "-net nic,model=virtio".  Remove
  "-net user,smb=..." and add "-virtfs" options.  Change default initrd
  to include two 9p mounts.

gnu: qemu: Upgrade to 1.7.1; add virtfs support.

* gnu/packages/qemu.scm (qemu-headless): Upgrade to 1.7.1.
  [source]: Remove 'patches' field.
  [arguments]: Add --enable-virtfs configure flag.
  [inputs]: Add libcap and attr.
* gnu/packages/patches/qemu-make-4.0.patch: Remove.
* gnu-system.am (dist_patch_DATA): Adjust accordingly.

gnu: lapack: Augment library rpath

* gnu/packages/maths.scm (lapack) [arguments]: New post-installation
  phase to augment the rpath of installed libraries.

gnu: Move help2man package to (gnu packages man) module.

* gnu/packages/man.scm (help2man): New variable.
* gnu/packages/help2man.scm: Delete it.
* gnu/packages/cdrom.scm: Import (gnu packages man).
* gnu/packages/zile.scm: Import (gnu packages man).
* gnu-system.am (GNU_SYSTEM_MODULES): Delete 'gnu/packages/help2man.scm'.

gnu: Add man-db.

* gnu/packages.man.scm (man-db): New variable.