* guix/profiles.scm (profile-derivation): Add #:target parameter; pass
it to 'gexp->derivation'.
* tests/profiles.scm ("profile-derivation, cross-compilation"): New test.

* guix/scripts/pack.scm (<compressor>)[package]: Remove.
[command]: Document as being a gexp with an absolute file name.
(%compressors): Adjust accordingly.
(self-contained-tarball): Simplify PATH expression.  Move 'string-join'
for the compressor command on the build side.
(docker-image): Simplify PATH expression.
* tests/pack.scm (%gzip-compressor): Adjust accordingly.

* gnu/packages/video.scm (libbluray): Update to 1.0.0.

* gnu/packages/video.scm (libx264): Update to 20170316-2245.

* gnu/packages/image.scm (libwebp): Update to 0.6.0.
[source]: Remove patch.
* gnu/packages/patches/libwebp-CVE-2016-9085.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Remove it.

* gnu/packages/ninja.scm (ninja): Update to 1.7.2.
[source]: Remove patch.
* gnu/packages/patches/ninja-tests.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Remove it.

* gnu/packages/linux.scm (btrfs-progs)[description]: Use @dfn.

* gnu/packages/linux.scm (btrfs-progs): Update to 4.10.1.

* guix/build/cargo-build-system.scm (configure): Remove proprietary
dependencies. Add rust dependencies and configure Cargo to find them.
(build): Also build libraries, not just applications.
(file-sha256): New variable.
(generate-checksums): New variable. Export it.
(touch): New variable.
(install): Generate checksums so Cargo accepts the package.

* guix/build-system/cargo.scm (cargo-build): Add cargo-build-flags,
remove configure-flags.

* gnu/packages/rust.scm (cargo): Use upstream cargo.

* gnu/packages/rust.scm (%rust-bootstrap-binaries-version): Update to 1.14.0.
(%rust-bootstrap-binaries): Update to 1.14.0.
(rustc): Update to 1.15.0.
[arguments]: Pass "--disable-rustbuild" to configure.

* gnu/packages/image.scm (libpng-apng)[phases]: Remove it.

* gnu/packages/image.scm (libpng-apng): New variable.

Co-authored-by: Kei Kebreau <kei@openmailbox.org>

* gnu/packages/machine-learning.scm (ocaml-mcl): New variable.

* gnu/packages/maths.scm (ocaml-gsl): New variable.

* gnu/packages/ocaml.scm (ocaml-csv): New variable.

* gnu/packages/ocaml.scm (ocaml-sqlite3): New variable.

* gnu/packages/python.scm (snakemake): Update to 3.11.2.

Fixes <https://bugs.gnu.org/25598>.

* gnu/packages/statistics.scm (r-minimal)[arguments]: Add remaining
reproducibility fixes to "build-reproducibly" phase.

* gnu/packages/statistics.scm (r): Rename to...
(r-minimal): ...this new variable.
(r-with-recommended-packages): Rename to...
(r): ...this.
* guix/build-system/r.scm (default-r): Reference r-minimal.
* gnu/packages/emacs.scm (emacs-ess)[inputs],
gnu/packages/machine-learning.scm (shogun)[inputs],
gnu/packages/python.scm (python-rpy2)[inputs],
gnu/packages/bioinformatics.scm (ribotaper)[inputs],
(couger)[propagated-inputs],
(roary)[inputs],
(rsem)[inputs],
(rcas-web)[inputs]: Change "r" to "r-minimal".

* gnu/packages/statistics.scm (r-with-recommended-packages): New variable.

* gnu/packages/statistics.scm (r)[arguments]: Rename phase
"build-recommended-packages-reproducibly" to "build-reproducibly"; add
configure flag "--without-recommended-packages".
* guix/import/cran.scm (default-r-packages): Remove recommended packages.
* gnu/packages/python.scm (python-rpy2)[inputs]: Add r-survival.
* gnu/packages/bioinformatics.scm (r-ape)[propagated-inputs]: Add r-lattice
and r-nlme.
(r-vegan)[propagated-inputs]: Add r-mass.
(r-genefilter)[propagated-inputs]: Add r-survival.
(r-grohmm)[propagated-inputs]: Add r-mass.
(r-bioccheck)[propagated-inputs]: Add r-codetools.
(r-summarizedexperiment)[propagated-inputs]: Add r-matrix.
(r-topgo)[propagated-inputs]: Add r-lattice.
(r-sva)[propagated-inputs]: Add r-mgcv.
(r-raremetals2)[propagated-inputs]: Add r-mass.
(r-vsn)[propagated-inputs]: Add r-lattice.
(r-pcamethods)[propagated-inputs]: Add r-mass.
* gnu/packages/bioinformatics.scm (r-ggplot2)[propagated-inputs]: Add r-mass.
(r-locfit)[propagated-inputs]: Add r-lattice.
(r-coda)[propagated-inputs]: Add r-lattice.
(r-irlba)[propagated-inputs]: Add r-matrix.
(r-glmnet)[propagated-inputs]: Add r-matrix.
(r-e1071)[propagated-inputs]: Add r-class.
(r-spams)[propagated-inputs]: Add r-lattice and r-matrix.
(r-hmisc)[propagated-inputs]: Add r-cluster, r-foreign, r-lattice, r-nnet, and
r-rpart.
(r-zoo)[propagated-inputs]: Add r-lattice.
(r-mixtools)[propagated-inputs]: Add r-boot and r-mass.
(r-flexmix)[propagated-inputs]: Add r-lattice and r-nnet.
(r-prabclus)[propagated-inputs]: Add r-mass.
(r-fpc)[propagated-inputs]: Add r-class, r-cluster, and r-mass.
(r-rcppeigen)[propagated-inputs]: Add r-matrix.
(r-matrixmodels)[propagated-inputs]: Add r-matrix.
(r-lme4)[propagated-inputs]: Add r-mass and r-nlme.
(r-pbkrtest)[propagated-inputs]: Add r-mass and r-matrix.
(r-car)[propagated-inputs]: Add r-mass, r-mgcv, and r-nnet.
(r-tclust)[propagated-inputs]: Add r-cluster.

* gnu/packages/statistics.scm (r-survival): Move up to set of recommended R
packages.

* gnu/packages/statistics.scm (r-spatial): New variable.

* gnu/packages/statistics.scm (r-rpart): Move up to the set of recommended
packages.

* gnu/packages/machine-learning.scm (r-nnet): Move from here...
* gnu/packages/statistics.scm (r-nnet): ...to here because the other
recommended R packages are here.

* gnu/packages/statistics.scm (r-mgcv): Move up to set of recommended R
packages.

* gnu/packages/statistics.scm (r-nlme): New variable.

* gnu/packages/statistics.scm (r-matrix): Move to set of recommended R
packages.

* gnu/packages/statistics.scm (r-lattice): Move to the set of recommended R
packages.

* gnu/packages/statistics.scm (r-kernsmooth): New variable.

* gnu/packages/statistics.scm (r-foreign): New variable.

* gnu/packages/statistics.scm (r-codetools): New variable.

* gnu/packages/statistics.scm (r-cluster): New variable.

* gnu/packages/statistics.scm (r-class): New variable.

* gnu/packages/statistics.scm (r-mass): New variable.

* gnu/packages/statistics.scm (r-boot): New variable.

* doc/guix.texi (Invoking guix pack): Properly document --format.

* gnu/packages/video.scm (youtube-dl): Update to 2017.03.16.