Merge branch 'master' into core-updates

guix: Add texlive importer.

* guix/import/texlive.scm: New file.
* guix/scripts/import/texlive.scm: New file.
* Makefile.am (MODULES): Add them.
* tests/texlive.scm: New file.
* Makefile.am (SCM_TESTS): Add it.
* guix/scripts/import.scm (importers): Add texlive importer.
* doc/guix.texi (Invoking guix import): Document it.

guix package: '--search' sorts by relevance.

* guix/scripts/package.scm (find-packages-by-description): Rewrite to
compute a score based on the number of regexps matched and the number of
matches for each regexp.  Sort according to this score and return it as
a second value.
(process-query) <'search>: Capture the two return values of
'find-packages-by-description'.  Pass #:extra-fields to
'package->recutils'.
* doc/guix.texi (Invoking guix package): Mention relevance, give an
example.

derivations: Introduce 'read-derivation-from-file'.

This avoids the open/fstat/close syscalls upon a cache hit that we had
with the previous idiom:

  (call-with-input-file file read-derivation)

where caching happened in 'read-derivation' itself.

* guix/derivations.scm (%read-derivation): Rename to...
(read-derivation): ... this.
(read-derivation-from-file): New procedure.
(derivation-prerequisites, substitution-oracle)
(derivation-prerequisites-to-build):
(derivation-path->output-path, derivation-path->output-paths):
(derivation-path->base16-hash, map-derivation): Use
'read-derivation-from-file' instead of (call-with-input-file …
read-derivation).
* guix/grafts.scm (item->deriver): Likewise.
* guix/scripts/build.scm (log-url, options->things-to-build): Likewise.
* guix/scripts/graph.scm (file->derivation): Remove.
(derivation-dependencies, %derivation-node-type): Use
'read-derivation-from-file' instead.
* guix/scripts/offload.scm (guix-offload): Likewise.
* guix/scripts/perform-download.scm (guix-perform-download): Likewise.
* guix/scripts/publish.scm (load-derivation): Remove.
(narinfo-string): Use 'read-derivation-from-file'.

Merge branch 'master' into core-updates

Conflicts:
* gnu/packages/tls.scm (gnutls): Incorporated 3.5.13 graft (88e2511e217f2).

bootloader: Rename boot-name to bootloader-name.

* gnu/system (<boot-parameters>)[boot-name]: Rename field to...
[bootloader-name]: ... this.  Adjust users.
* gnu/scripts/system.scm: Adjust accordingly.

Merge branch 'master' into core-updates

scripts: refresh: Add -m manifest option.

* guix/scripts/refresh.scm (%options): Add -m option,
(show-help): document it,
(packages-from-manifest): new procedure,
(guix-refresh): use packages from manifest if specified, otherwise
keep the previous behaviour.
* doc/guix.texi (Invoking guix refresh): document new option.

Merge branch 'master' into core-updates

 Conflicts:
	gnu/packages/image.scm
        (incorporated libtiff graft)

substitute: Do not display the installed size.

* guix/scripts/substitute.scm (process-substitution): Do not show the
installed size in the "Downloading" message.

syscalls: Provide 'free-disk-space'.

* guix/build/syscalls.scm (free-disk-space): New procedure.
* guix/scripts/gc.scm (guix-gc)[ensure-free-space]: Use it instead of
'statfs'.

Merge branch 'master' into staging

scripts: Set thread names.

This allows 'guix publish' threads as well as 'guix substitute' and
'guix offload' processes to be properly labeled in 'top', 'pstree', etc.

* guix/workers.scm (worker-thunk): Add #:thread-name parameter and honor it.
(make-pool): Likewise.
* guix/scripts/publish.scm (http-write): Add calls to 'set-thread-name'
in bodies of 'call-with-new-thread'.
(guix-publish): Call 'set-thread-name'.   Pass #:thread-name to 'make-pool'.
* guix/scripts/offload.scm (guix-offload): Call 'set-thread-name'.
* guix/scripts/substitute.scm (guix-substitute): Likewise.

Merge branch 'master' into core-updates

Merge branch 'master' into staging

Merge branch 'master' into core-updates

publish: Do not bake the same item several times.

Before this patch, there was a possibility that we'd queue several
baking tasks for the same item.  The first one would bake the item but
subsequent tasks wouldn't check whether the item had been baked in the
meantime and would re-bake it.

* guix/scripts/publish.scm (render-narinfo/cached): Don't call
'bake-narinfo+nar' when (file-exists? cached).

guix package: Swallow EPIPE upon 'guix package --list-generations'.

Fixes <http://bugs.gnu.org/27017>.
Reported by Alex Vong <alexvong1995@gmail.com>.

* guix/scripts/package.scm (process-query) <'list-generations>: Wrap
body in 'leave-on-EPIPE'.

guix: lint: Slightly simplify `check-source-file-name'.

* guix/scripts/lint.scm (check-source-file-name): Implement file name matching
  with regular expression.

gnu: lint: Fix typo.

* guix/scripts/lint.scm (check-source-file-name): Fix wrong return value in
  docstring.