* gnu/packages/maths.scm (scotch): New variable.
* gnu/packages/patches/scotch-test-threading.patch: New patch.
* gnu-system.am (dist_patch_DATA): Add it.
* gnu/system/grub.scm (<grub-configuration>): New record type.
(grub-configuration-file): Add 'config' parameter; remove
#:default-entry and #:timeout. Honor CONFIG.
* gnu/system.scm (<operating-system>): Remove 'bootloader-entries'
field; remove default value for 'bootloader' field.
(operating-system-grub.cfg): Pass the 'bootloader' field to
'grub-configuration-file'.
* build-aux/hydra/demo-os.scm (bootloader): New field.
* gnu/system.scm (etc-directory): Change default value of #:profile.
Change contents of SHELLS. Use /run/current-system/profile/{s,}bin in
BASHRC.
(operating-system-boot-script)[%modules]: Add (guix build
linux-initrd). Add call to 'activate-current-system' in gexp.
(operating-system-initrd-file, operating-system-grub.cfg): New
procedures.
(operating-system-derivation): Don't build grub.cfg here and remove it
from the file union.
* gnu/system/vm.scm (qemu-image): Remove #:populate.
(operating-system-build-gid, operating-system-default-contents):
Remove.
(system-qemu-image): Remove call to
'operating-system-default-contents'. Use 'operating-system-grub.cfg'
to get grub.cfg. Add GRUB.CFG to #:inputs.
(system-qemu-image/shared-store): Likewise, but don't add GRUB.CFG to
#:inputs.
(system-qemu-image/shared-store-script): Pass --system kernel option.
* guix/build/activation.scm (%booted-system, %current-system): New
variables.
(boot-time-system, activate-current-system): New procedures.
* guix/build/install.scm (evaluate-populate-directive): Add case
for ('directory name uid gid mode).
(directives, populate-root-file-system): New procedures.
* guix/build/vm.scm (initialize-hard-disk): Replace calls to
'evaluate-populate-directive' by a call to
'populate-root-file-system'.
* gnu/services/dmd.scm (dmd-configuration-file): Use
/run/current-system/profile/bin.
* gnu/services/xorg.scm (slim-service): Likewise.
* gnu/system/vm.scm (qemu-image): Rename #:inputs-to-copy to #:inputs,
and #:initialize-store? to #:register-closures?. Add #:copy-inputs?.
Adjust build gexp accordingly.
(system-qemu-image): Remove #:initialize-store? argument and add
#:copy-inputs?.
(system-qemu-image/shared-store): Add #:inputs, #:register-closures?,
and #:copy-inputs? arguments.
* guix/build/vm.scm (register-closure): New procedure.
(MS_BIND): New variable.
(initialize-hard-disk): Rename #:initialize-store? to
#:register-closures?, #:closures-to-copy to #:closures, and add
#:copy-closures?.
Add 'target-directory' and 'target-store' variables.
Call 'populate-store' only when COPY-CLOSURES?.
Bind-mount the store to TARGET-STORE when REGISTER-CLOSURES? and not
COPY-CLOSURES?. Add call to 'register-closure'.
* gnu/system/vm.scm (virtualized-operating-system): Instead of
completely overriding 'file-systems', use 'remove' to filter out some
of those declared in OS.
(system-qemu-image): Likewise.
* guix/build/linux-initrd.scm (pidof): New procedure.
(mount-root-file-system)[mark-as-not-killable]: New procedure.
Use it for unionfs when VOLATILE-ROOT?.
* gnu/services/base.scm (%do-not-kill-file): New variable.
(user-processes-service)[stop]: Honor it.
* doc/guix.texi (Installing Debugging Files): Add @cindex. Remove
unneeded '-i' in example. Mention source code an 'directory'. Link
to "Build Systems" instead of "Defining Packages".
* gnu/system.scm (<operating-system>)[skeletons]: New field.
(default-skeletons, skeleton-directory): New procedures.
(etc-directory): Add #:skeletons parameter. Call
'skeleton-directory', and produce the 'skel' sub-directory.
(operating-system-etc-directory): Pass #:skeletons to
'etc-directory'.
* gnu/packages/patches/perl-tk-x11-discover.patch: New patch.
* gnu-system.am [dist_patch_DATA]: Add it.
* gnu/packages/tcl.scm (perl-tk)[origin]: Use it.
