services: connman: Rework service.

* gnu/services/networking.scm (connman-service): Remove.
(<connman-configuration>): New record specifying the package
to be used (connman) and whether vpn plugin shall be
disabled (disable-vpn?).
(connman-configuration): New exported variable.
(connman-configuration?): New exported variable.
(connman-service-type): Export it.

* doc/guix.texi (Networking Services): Adjust accordingly.

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

gexp: Add '=>' syntax to import computed modules.

* guix/gexp.scm (imported-files)[file-pair]: Add case for pairs where
the cdr is not a string.
(imported-modules): Support '=>' syntax in MODULES.
* tests/gexp.scm ("imported-files with file-like objects")
("gexp->derivation & with-imported-module & computed module"): New tests.
* doc/guix.texi (G-Expressions): Document '=>' syntax for
'with-imported-modules'.

utils: Move base16 procedures to (guix base16).

* guix/utils.scm (bytevector->base16-string, base16-string->bytevector):
Move to...
* guix/base16.scm: ... here.  New file.
* tests/utils.scm ("bytevector->base16-string->bytevector"): Move to...
* tests/base16.scm: ... here.  New file.
* Makefile.am (MODULES): Add guix/base16.scm.
(SCM_TESTS): Add tests/base16.scm.
* build-aux/download.scm, guix/derivations.scm,
guix/docker.scm, guix/import/snix.scm, guix/pk-crypto.scm,
guix/scripts/authenticate.scm, guix/scripts/download.scm,
guix/scripts/hash.scm, guix/store.scm, tests/hash.scm,
tests/pk-crypto.scm: Adjust imports accordingly.

gnu: password-store: Fix compatibility with GnuPG 2.1.19.

* gnu/packages/patches/password-store-gnupg-compat.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/password-utils.scm (password-store)[source]: Use it.

Signed-off-by: Clément Lassieur <clement@lassieur.org>

gnu: Add r-seurat.

* gnu/packages/bioinformatics.scm (r-seurat): New variable.

Co-authored-by: Ricardo Wurmus <rekado@elephly.net>

gnu: sra-tools: Update to 2.8.2-1.

* gnu/packages/bioinformatics.scm (sra-tools): Update to 2.8.2-1.
[arguments]: Add DEFAULT_CRT and DEFAULT_KFG to make flags.

gnu: ncbi-vdb: Install configuration files.

* gnu/packages/bioinformatics.scm (ncbi-vdb)[arguments]: Add phase
"install-configuration-files".

gnu: ncbi-vdb: Override search path for java-ngs.

* gnu/packages/bioinformatics.scm (ncbi-vdb)[arguments]: Patch "package.prl"
to ensure that java-ngs is found by the configure script; remove configure
flag "--with-ngs-java-prefix".

gnu: ncbi-vdb: Use modify-phases syntax.

* gnu/packages/bioinformatics.scm (ncbi-vdb)[arguments]: Use modify-phases
syntax.

gnu: ncbi-vdb: Update to 2.8.2.

* gnu/packages/bioinformatics.scm (ncbi-vdb): Update to 2.8.2.

gnu: ngs-sdk: Update to 1.3.0.

* gnu/packages/bioinformatics.scm (ngs-sdk): Update to 1.3.0.

gnu: Add pzstd.

* gnu/packages/compression.scm (pzstd): New variable.

gnu: Add zstd.

* gnu/packages/compression.scm (zstd): New variable.

gnu: python-publicsuffix2: Update to 2.20160818.

* gnu/packages/python.scm (python-publicsuffix2): Update to 2.20160818.

gnu: awscli: Update to 1.11.63.

* gnu/packages/python.scm (awscli): Update to 1.11.63.

gnu: python-botocore: Update to 1.5.26.

* gnu/packages/python.scm (python-botocore): Update to 1.5.26.

gnu: python-ptyprocess: Update to 0.5.1.

* gnu/packages/python.scm (python-ptyprocess): Update to 0.5.1.

gnu: Add prboom-plus.

* gnu/packages/games.scm (prboom-plus): New variable.

gnu: Add tftp-hpa.

* gnu/packages/networking.scm (tftp-hpa): New variable.

Signed-off-by: Leo Famulari <leo@famulari.name>

gnu: guile-next: Update to 2.2.0.

* gnu/packages/guile.scm (guile-next): Update to 2.2.0.