gnu: Add cl-unicode.

* gnu/packages/lisp.scm (sbcl-cl-unicode-base, sbcl-cl-unicode)
(ecl-cl-unicode, cl-unicode): New variables.

Co-Authored-By: Andy Patterson <ajpatter@uwarerloo.ca>

build-system/asdf: Handle unusually-named systems.

* guix/build/lisp-utils.scm (valid-char-set): New variable.
(normalize-string): New procedure.
(compiled-system): Truncate the name of a system which contains slashes.
(generate-system-definition, make-asd-file): Use `normalize-string' to alter
the names of the created system and its dependencies.
* guix/build/asdf-build-system.scm (create-asd-file): Normalize the name of
the asd file being created.

build-system/asdf: Always pre-load the system's definition file.

* guix/build-system/asdf.scm (asdf-build)[builder]: Pass a default
`#:asd-file' argument to the build procedure, using the system's name.
* guix/build/asdf-build-system.scm (build, check): Adjust to assume that
`asd-file' will always be a string.
* guix/build/lisp-utils.scm (compile-system, system-dependencies)
(test-system): Likewise.

build-system/asdf: Pass the system name as an argument to the builder.

* guix/build-system/asdf.scm (asdf-build): Use the user-defined system name,
or calculate it from the package's full name.
[builder]: Pass the value along to the build procedure.
(package-with-build-system): Remove #:asd-system-name from source packages'
arguments.
* guix/build/asdf-build-system.scm: Adjust accordingly.
* guix/build/lisp-utils.scm (remove-lisp-from-name): Delete variable.

build-system/asdf: Parameterize the lisp type and implementation globally.

* guix/build-system/asdf.scm (asdf-build)[builder]: Parameterize %lisp-type
and %lisp before invoking the build procedure. Don't pass #:lisp-type as an
argument to said procedure.
* guix/build/asdf-build-system.scm: Adjust accordingly.
(source-install-prefix): Rename to %lisp-source-install-prefix.
* guix/build/lisp-utils.scm: Adjust accordingly.
(%lisp-type): New parameter.
(bundle-install-prefix): Rename to %bundle-install-prefix.
* gnu/packages/lisp.scm: Adjust accordingly.

build-system/asdf: Make #:lisp a package argument.

* guix/build-system/asdf.scm (lower): Change argument name to `lisp-type'.
(asdf-build): Change argument name to `lisp-type'.  Remove `lisp' as an
argument to the returned procedure.  Change the argument passed to build
phases to `lisp-type'.
* guix/build/asdf-build-system.scm (copy-source, build, check)
(create-asd-file, symlink-asd-files, cleanup-files, strip): Respect
`lisp-type` argument.
* gnu/packages/lisp.scm (sbcl-stumpwm, sbcl-stumpwm+slynk): Likewise.

build-system/asdf: Keep ecl's generated archive files.

This may be necessary to produce programs or images with ecl.

* guix/build/asdf-build-system.scm (cleanup-files): Don't delete .a files.

build-system/asdf: Don't rename inputs.

* guix/build-system/asdf.scm (package-with-build-system)[transform]: Use updated
`new-inputs' procedure for inputs and native-inputs.
<rewrite>: Don't rename inputs.
<new-propagated-inputs>: Draw from package-inputs and package-native-inputs
for source packages.  Use the original package's propagated-inputs otherwise.
<new-inputs>: Convert into a function to be used to transform inputs and
native-inputs.
* gnu/packages/lisp.scm (sbcl-fiveam, sbcl-bordeaux-threads)
(sbcl-flexi-streams, sbcl-cl-ppcre, sbcl-stumpwm, sbcl-slynk-arglists)
(sbcl-slynk-fancy-inspector): Don't prefix input names.

build-system/asdf: Use asdf to determine dependencies.

This removes the need for conventions to determine which inputs are run-time
dependencies, and also the need to specify "special" dependencies.

* guix/build/lisp-utils.scm (patch-asd-file, lisp-dependencies)
(wrap-perform-method): Remove them.
(inputs->asd-file-map, system-dependencies, generate-system-definition)
(generate-dependency-links, make-asd-file): New procedures.
(lisp-eval-program): Add an error if no lisp matches.
(compile-system): Don't use asdf's in-built asd-file generator.

gnu: cl-stumpwm: Build the library in "lib" and the program in "bin".

* gnu/packages/lisp.scm (sbcl-stumpwm)[outputs]: Remove "bin" and add "lib".
[arguments]<#:phases>: Change the target of `build-program' to the "out"
output. Likewise, change the target of the desktop file generation.
(sbcl-stumpwm+slynk)[inputs]: Use the "lib" output of sbcl-stumpwm.

build-system/asdf: Make it possible to use "lib" as the build output.

* guix/build/asdf-build-system.scm (library-output): New procedure.
(copy-source, build, check, patch-asd-files, symlink-asd-files)
(cleanup-files): Use it.
(copy-files-to-output): Rework to take an output instead of an outputs and
string pair.
(install, copy-source): Use the new method.

build-system/asdf: Rename %install-prefix to %source-install-prefix.

* guix/build/lisp-utils.scm (%install-prefix): Rename to
%source-install-prefix.
(build-install-prefix): Use it.
* guix/build/asdf-build-system.scm (source-install-prefix)
(%system-install-prefix, source-directory, copy-source): Likewise.

gnu: cl-slynk: Explain some naming choices.

* gnu/packages/lisp.scm (sbcl-slynk-boot0): Add comments explaining its
purpose and the reason its package-name must differ from its name.

gnu: cl-slynk: Clarify the description.

* gnu/packages/lisp.scm (sbcl-slynk-boot0)[description]: Describe slime.

gnu: guix: Update snapshot.

* gnu/packages/package-management.scm (guix): Update to ce92d26.

scripts: system: Display bootloader name in "list-generations".

* guix/scripts/system.scm (display-system-generation): Display
  bootloader name.

scripts: system: Adapt "switch-generation" to new bootloader API.

* guix/scripts/system.scm (reinstall-grub): Rename to
  reinstall-bootloader. Read boot-device and boot-type from parameters file to
  be able to restore the correct bootloader on specified device.
  Factorize bootloader installation code by calling install-bootloader.
 (system-bootloader-name): New procedure.
 (switch-to-system-generation): Adapt.

scripts: system: Adapt "init" to new bootloader API.

* guix/scripts/system.scm (install): Pass installer a new
argument. Rename other arguments.
Call install-bootloader instead of install-grub*.
(perform-action): Adapt.

scripts: system: Adapt "reconfigure" to new bootloader API.

* guix/scripts/system.scm (install-grub*): Rename to install-bootloader.  Use
keys to pass arguments.  Pass a new argument, "installer-drv" which is a script
in store dealing with bootloader-specific install actions.  Also call
"install-boot-config" to install the bootloader config file.

(install-bootloader-derivation): New procedure.  It returns a derivation that
builds a file containing "install-procedure" gexp.

(perform-action): Build install-proc derivation and call install-bootloader
with the resulting file.  Stop adding GRUB to PATH as bootloaders are called in
install-proc with direct store paths.

bootloader: Add bootloader name to boot-parameters record.

* gnu/system.scm (<boot-parameters>)[name]: New field.
(boot-parameters-boot-name): Ditto.
(operating-system-boot-parameters-file): Add new field.
(operating-system-boot-parameters): Ditto.
(read-boot-parameters): Ditto.