* guix/store.scm (%default-guix-port): New variable.
(connect-to-daemon)[connect]: Use it when (uri-port uri) is #f.
* doc/guix.texi (The Store): Mention the default port number.

* guix/store.scm (open-inet-socket): Pass hints in the 'getaddrinfo'
call.

* gnu/packages/webkit.scm (webkitgtk): Update to 2.16.4.

* gnu/packages/python.scm (python-drmaa)[source]: Use pypi-uri.

* gnu/packages/tls.scm (mbedtls-apache): Update to 2.5.1.

See 'Changes.rst' in the source distribution for more information about the
security-related changes.

* gnu/packages/vpn.scm (openvpn): Update to 2.4.3.

* gnu/local.mk: Remove patch.
* gnu/packages/ebook.scm (calibre): Update to 3.0.0.
* gnu/packages/patches/calibre-dont-load-remote-icons.patch: Remove file.

* gnu/packages/embedded.scm (propeller-gcc): Rename this...
(propeller-gcc-6): ...to this.
(propeller-gcc-4): Inherit from propeller-gcc-6.
(propeller-gcc): New alias for propeller-gcc-4.

* gnu/packages/dns.scm (knot): Update to 2.5.1.
[inputs]: Add python-2 and python2-lmdb.
[arguments]: Adapt #:configure-flags.  Add ‘wrap-python-scripts’ phase.

* gnu/packages/databases.scm (python-lmdb, python2-lmdb): New variables.

* gnu/packages/databases.scm (lmdb)[synopsis]: Capitalise.
[description]: Elaborate.

* gnu/packages/python.scm (python-pycodestyle): Update to 2.3.1.

* gnu/packages/password-utils.scm (cracklib)[description]: Fix typos, add
mark-up, and drop unclear reference to the ancient ‘Crack 5’ tool.

* gnu/packages/password-utils.scm (libpwquality): Update to 1.4.0.

* gnu/packages/python.scm (python-flake8-2.2.4): Remove variable.

* gnu/packages/openstack.scm (python-hacking): Update to 0.13.0.
[arguments]: Re-enable tests.
[propagated-inputs]: Use latest python-flake8.
[native-inputs]: Add python-eventlet, python-mock, python-reno, and
python-testrepository for tests.

* gnu/packages/python.scm (python-eventlet)[arguments]: Disable tests.

* gnu/packages/python.scm (python-vobject): Update to 0.9.4.1.

* gnu/packages/mpd.scm (mpd)[native-inputs]: Remove gcc-5.

* gnu/packages/xiph.scm (opus-tools): Update to 0.1.10.
[home-page]: Use HTTPS URL.

* gnu/packages/xiph.scm (opus): Update to 1.2.
[home-page]: Use HTTPS URL.

* gnu/packages/maths.scm (gsl): Update to 2.4.
[arguments]: Remove #:parallel-tests?.

* gnu/services/dns.scm (zone-file, knot-policy-configuration): Use numbers
instead of duration strings.
(verify-knot-policy-configuration): Fix typo.
* doc/guix.texi (DNS Services): Update documentation.

Reported by Efraim Flashner.
This is a followup to a654dc4b.

* guix/profiles.scm (profile-derivation): Add #:allow-collisions? and
honor it.
* guix/scripts/environment.scm (inputs->profile-derivation): Pass
 #:allow-collisions? #f to 'profile-derivation'.
* tests/guix-environment.sh: Test "guix environment guix".

* gnu/packages/pretty-print.scm (a2ps)[source](modules, snippet): New
fields.

* gnu/services/networking.scm (network-manager-service-type)[default-value]:
New field.

Reported by Efraim Flashner.

* guix/profiles.scm (manifest-transitive-entries): Move after
<manifest-entry> definition.

* gnu/packages/enlightenment.scm (efl)[inputs]: Add libxau, libxdamage,
libxfixes, libxrender. Remove libxkbfile.

* guix/scripts/package.scm (process-query) <'search-paths>: Use
'manifest-transitive-entries' instead of 'manifest-entries'.

* guix/profiles.scm (&profile-collision-error): New error condition.
(manifest-transitive-entries, manifest-entry-lookup, lower-manifest-entry)
(check-for-collisions): New procedures.
(profile-derivation): Add call to 'check-for-collisions'.
* guix/ui.scm (call-with-error-handling): Handle '&profile-collision-error'.
* tests/profiles.scm ("collision", "collision of propagated inputs")
("no collision"): New tests.

* guix/scripts/package.scm (transaction-upgrade-entry): Always upgrade
packages that have propagated inputs.

* guix/profiles.scm (<manifest-entry>)[parent]: New field.
(package->manifest-entry): Add #:parent parameter.  Fill out the
'parent' field of <manifest-entry>; pass #:parent in recursive calls.
* guix/profiles.scm (sexp->manifest)[sexp->manifest-entry]: New
procedure.  Use it for version 3.
* tests/profiles.scm ("manifest-entry-parent"): New procedure.
("read-manifest")[entry->sexp]: Add 'manifest-entry-parent' to the
result.

* guix/profiles.scm (package->manifest-entry): Turn DEPS into a list of
manifest entries.
(manifest->gexp)[entry->gexp]: Call 'entry->gexp' on DEPS.
Bump version to 3.
(sexp->manifest)[infer-dependency]: New procedure.
Use it for versions 1 and 2.  Parse version 3.
(manifest-inputs)[entry->gexp]: New procedure.
Adjust to 'dependencies' being a list of <manifest-entry>.
* tests/profiles.scm ("packages->manifest, propagated inputs")
("read-manifest"): New fields.

* gnu/packages/dns.scm (unbound)[arguments]: Add "--disable-static" to
  #:configure-flags.  Suggested by Gregor Giesen <giesen@zaehlwerk.net>.

* gnu/packages/python.scm (python-regex, python2-regex): New variables.

* gnu/tests/install.scm (%test-installed-extlinux-os): New exported
  variable.
(%minimal-extlinux-os, %minimal-extlinux-os-source): New variables.
(%extlinux-gpt-installation-script): New variable.
(run-install)[packages]: New argument. The packages specified are
appended to the installation image.

* gnu/bootloader/extlinux.scm (extlinux-bootloader-gpt): New exported
  variable.
 (install-extlinux)[mbr]: New argument.
 (install-extlinux-mbr, install-extlinux-gpt): New variables.
 (extlinux-bootloader)[installer]: Use install-extlinux-mbr.

* gnu/packages/wm.scm (xmonad): Update to 0.13.
[inputs]: Add ghc-directory.
(ghc-xmonad-contrib): Update to 0.13.

* gnu/packages/haskell.scm (ghc-x11): Update to 1.8.

* gnu/packages/busybox.scm (busybox)[arguments]: Whitespace changes.