gnu: Add emacs-kind-icon.

* gnu/packages/emacs-xyz.scm (emacs-kind-icon): New variable.

Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>

gnu: qbittorrent: Update to 4.4.0.

* gnu/packages/bittorrent.scm (qbittorrent): Update to 4.4.0.

Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>

gnu: nushell: Update to 0.43.0.

* gnu/packages/shells.scm (nushell):
(rust-nu-ansi-term-0.43):
(rust-nu-cli-0.43):
(rust-nu-command-0.43):
(rust-nu-completion-0.43):
(rust-nu-data-0.43):
(rust-nu-engine-0.43):
(rust-nu-errors-0.43):
(rust-nu-parser-0.43):
(rust-nu-path-0.43):
(rust-nu-plugin-0.42):
(rust-nu-plugin-binaryview-0.42):
(rust-nu-plugin-chart-0.42):
(rust-nu-plugin-from-bson-0.43):
(rust-nu-plugin-inc-0.43):
(rust-nu-plugin-match-0.42):
(rust-nu-plugin-query-json-0.43):
(rust-nu-plugin-selector-0.43):
(rust-nu-plugin-textview-0.43):
(rust-nu-plugin-to-bson-0.42):
(rust-nu-plugin-to-sqlite-0.43):
(rust-nu-plugin-xpath-0.43):
(rust-nu-pretty-hex-0.42):
(rust-nu-protocol-0.43):
(rust-nu-serde-0.43):
(rust-nu-stream-0.43):
(rust-nu-table-0.43):
(rust-nu-test-support-0.43):
(rust-nu-value-ext-0.43): Update to 0.43.0.

gnu: Add rust-sysinfo-0.23.

* gnu/packages/crates-io.scm (rust-sysinfo-0.23): New variable.
(rust-sysinfo-0.21): Inherit from above.

gnu: rust-libc-0.2: Update to 0.2.112.

* gnu/packages/crates-io.scm (rust-libc-0.2): Update to 0.2.112.

gnu: rust-nix-0.22: Fix build.

* gnu/packages/crates-io.scm (rust-nix-0.22)[arguments]<#:cargo-inputs>: Use
rust-bitflags-1.2 instead of rust-bitflags-1.

gnu: Add rust-bitflags-1.2.

* gnu/packages/crates-io.scm (rust-bitflags-1.2): New variable.

gnu: ppsspp: Update to 1.12.3.

* gnu/packages/emulators.scm (ppsspp): Update to 1.12.3.
[inputs]: Convert to new style.  Add bash.  Remove armips-source, lang and
tests.
[arguments]: Convert to list of g-exps.
<#:phases>: Drop trailing #t.
Directly refer to armips source and pspautotests.
Check for #:tests? flag.
Reenable VFPUSinCos test.
* gnu/packages/patches/ppsspp-disable-upgrade-and-gold.patch: Adjust
to version 1.12.3.

gnu: r-effects: Update to 4.2-1.

* gnu/packages/statistics.scm (r-effects): Update to 4.2-1.

gnu: r-clubsandwich: Update to 0.5.5.

* gnu/packages/statistics.scm (r-clubsandwich): Update to 0.5.5.

gnu: r-cardata: Update to 3.0-5.

* gnu/packages/statistics.scm (r-cardata): Update to 3.0-5.

gnu: r-testthat: Update to 3.1.2.

* gnu/packages/statistics.scm (r-testthat): Update to 3.1.2.

gnu: r-spatial: Update to 7.3-15.

* gnu/packages/statistics.scm (r-spatial): Update to 7.3-15.

gnu: r-nnet: Update to 7.3-17.

* gnu/packages/statistics.scm (r-nnet): Update to 7.3-17.

gnu: r-nlme: Update to 3.1-155.

* gnu/packages/statistics.scm (r-nlme): Update to 3.1-155.

gnu: r-foreign: Update to 0.8-82.

* gnu/packages/statistics.scm (r-foreign): Update to 0.8-82.

gnu: r-class: Update to 7.3-20.

* gnu/packages/statistics.scm (r-class): Update to 7.3-20.

gnu: r-mass: Update to 7.3-55.

* gnu/packages/statistics.scm (r-mass): Update to 7.3-55.

gnu: r-delaporte: Update to 8.0.2.

* gnu/packages/cran.scm (r-delaporte): Update to 8.0.2.

gnu: r-prereg: Update to 0.6.0.

* gnu/packages/cran.scm (r-prereg): Update to 0.6.0.