gnu: Add utf-8-lineseparator.

* gnu/packages/textutils.scm (utf-8-lineseparator): New variable.

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

doc: Tweak Guix Home bits.

* doc/guix.texi (Shepherd Home Service): Tweak section name.  Add
intro.
(Invoking guix home): Refer to "guix search".  Use @var where
appropriate.

gnu: Add font-charter.

* gnu/packages/fonts.scm (font-charter): New variable.

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

doc: Document search paths.

* doc/guix.texi (package Reference): Link to "Search Paths".
(Invoking guix package): Likewise.
(Build Phases): Mention 'set-paths' phase.
(Search Paths): New node.

compile: Really disable cross-module inlining and related features.

This is a followup to d87a1ba6b8b2f08ba6898033353d7463355bd146.

* guix/build/compile.scm (strip-keyword-arguments): Rename to...
(clear-keyword-arguments): ... this, and set the value associated with
each of KEYWORDS to #f.
(optimizations-for-level): Adjust accordingly.

gnu: python-pillow-simd: Update to 9.0.0.

* gnu/packages/python-xyz.scm (python-pillow-simd): Update to 9.0.0.
[arguments]: Remove field.

gnu: python-pillow: Remove input labels.

* gnu/packages/python-xyz.scm (python-pillow)[inputs]: Remove labels.

gnu: python-pillow: Update to 9.0.0 (security fixes).

* gnu/packages/python-xyz.scm (python-pillow): Update to 9.0.0.
[source]: Add snippet to remove bundled code.
[arguments]: Adjust custom 'check phase.

gnu: python-pillow: Add cpe-name.

* gnu/packages/python-xyz.scm (python-pillow)[properties]: Add cpe-name.

gnu: python-cryptography: Add 36.0.1.

* gnu/packages/python-crypto.scm (python-cryptography-vectors-next,
python-cryptography-next): New variables.

gnu: Add python-setuptools-rust.

* gnu/packages/python-xyz.scm (python-setuptools-rust): New variable.

gnu: Add rust-pyo3.

* gnu/packages/crates-io.scm (rust-pyo3-build-config-0.15,
rust-pyo3-macros-backend-0.15, rust-pyo3-macros-0.15, rust-pyo3-0.15): New
variables.

gnu: Add rust-eyre.

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

gnu: rust-indoc: Add 0.3.

* gnu/packages/crates-io.scm (rust-indoc-0.3, rust-indoc-impl-0.3): New
variables.

gnu: Add rust-inventory.

* gnu/packages/crates-io.scm (rust-inventory-0.1, rust-inventory-impl-0.1):
New variables.

gnu: Add rust-indenter.

* gnu/packages/crates-io.scm (rust-indenter-0.3): New variable.

gnu: Add rust-ghost.

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

gnu: Add rust-assert-approx-eq.

* gnu/packages/crates-io.scm (rust-assert-approx-eq-1): New variable.

gnu: Add rust-ouroboros.

* gnu/packages/crates-io.scm (rust-ouroboros-0.14): New variable.

gnu: Add rust-ouroboros-macro.

* gnu/packages/crates-io.scm (rust-ouroboros-macro-0.14): New variable.