gnu: Add openjdk14.

* gnu/packages/java.scm (openjdk14): New variable.

Signed-off-by: Ricardo Wurmus <rekado@elephly.net>

gnu: Add openjdk13.

* gnu/packages/java.scm (openjdk13): New variable.

Signed-off-by: Ricardo Wurmus <rekado@elephly.net>

gnu: Add rawdog.

* gnu/packages/syndication.scm (rawdog): New variable.

Signed-off-by: 宋文武 <iyzsong@member.fsf.org>

gnu: Add python-pytidylib.

* gnu/packages/python-xyz.scm (python-pytidylib, python2-pytidylib): New variables.

gnu: delft-icon-theme: Update to 1.12.

* gnu/packages/gnome-xyz.scm (delft-icon-theme): Update to 1.12.

Signed-off-by: 宋文武 <iyzsong@member.fsf.org>

gnu: papirus-icon-theme: Update to 20200430.

* gnu/packages/gnome-xyz.scm (papirus-icon-theme): Update to 20200430.

Signed-off-by: 宋文武 <iyzsong@member.fsf.org>

gnu: matcha-theme: Update to 2020-05-09.

* gnu/packages/gnome-xyz.scm (matcha-theme): Update to 2020-05-09.
[source]: Update URL.
[arguments]: Update build script.

Signed-off-by: 宋文武 <iyzsong@member.fsf.org>

services: shepherd: Silence Guile warnings.

This avoids:

  WARNING: …: imported module (guix build utils) overrides core binding `delete'

* gnu/services/shepherd.scm (%default-modules): #:hide 'delete'
from (guix build utils).
(shepherd-configuration-file)[config]: Wrap calls to 'load-compiled' in
'parameterize'.

linux-initrd: Silence Guile warnings.

Previously, since the switch to Guile 3, we'd see this warning repeated
several times at boot time:

  WARNING: …: imported module (guix build utils) overrides core binding `delete'

* gnu/system/linux-initrd.scm (raw-initrd): In gexp, #:hide 'delete'
from (guix build utils).  Wrap 'boot-system' in 'parameterize'.

vm: Use 'let-system'.

* gnu/system/vm.scm (expression->derivation-in-linux-vm)[check]: New macro.
[builder]: Use 'let-system' and 'check' instead of referencing
'%current-system' and '%current-target-system'.

utils: 'target-arm32?' & co. take an optional parameter.

* guix/utils.scm (target-arm32?, target-aarch64?)
(target-arm?, target-64bit?): Make 'target' an optional parameter.

gexp: Add 'let-system'.

* guix/gexp.scm (<system-binding>): New record type.
(let-system): New macro.
(system-binding-compiler): New procedure.
(default-expander): Add 'self-quoting?' case.
(self-quoting?): New procedure.
(lower-inputs): Add 'filterm'.  Pass the result of
'mapm/accumulate-builds' through FILTERM.
(gexp->sexp)[self-quoting?]: Remove.
* tests/gexp.scm ("let-system", "let-system, target")
("let-system, ungexp-native, target")
("let-system, nested"): New tests.
* doc/guix.texi (G-Expressions): Document it.

gexp: Compilers can now return lowerable objects.

* guix/gexp.scm (lower-object): Iterate if LOWERED is a struct.
(lower+expand-object): New procedure.
(gexp->sexp): Use it.
(define-gexp-compiler): Adjust docstring.

bootloader: grub: Refer to the native 'grub-mklayout' and font file.

* gnu/bootloader/grub.scm (eye-candy): Refer to the native FONT-FILE.
(keyboard-layout-file): Refer to the native 'grub-mklayout'.

gnu: python-libmpsse: Update to 1.4.1.

* gnu/packages/embedded.scm (python-libmpsse): Update to 1.4.1.
[arguments]<#:phases>[set-environment-up]:
Fix build with Python 3.8.

gnu: kicad: Re-use common fields in add-ons.

* gnu/packages/engineering.scm (kicad-i18n, kicad-symbols): Re-use
kicad's VERSION and HOME-PAGE.
(kicad-symbols, kicad-footprints, kicad-packages3d, kicad-templates):
Re-use kicad's VERSION.

gnu: kicad-templates: Update to 5.1.6.

* gnu/packages/engineering.scm (kicad-templates): Update to 5.1.6.

gnu: kicad-packages3d: Update to 5.1.6.

* gnu/packages/engineering.scm (kicad-packages3d): Update to 5.1.6.

gnu: kicad-footprints: Update to 5.1.6.

* gnu/packages/engineering.scm (kicad-footprints): Update to 5.1.6.

gnu: kicad-symbols: Update to 5.1.6.

* gnu/packages/engineering.scm (kicad-symbols): Update to 5.1.6.