build-system: zig: Support Zig package manager.

* guix/build-system/zig.scm (zig-build,zig-cross-build)
[#:install-source?,#:skip-build?]: New arguments.
[#:tests?]: Honor #:skip-build?.
* guix/build/zig-build-system.scm (zig-source-install-path)
(zig-input-install-path,unpack-dependencies): New procedures.
(%standard-phases): Add 'unpack-dependencies.
(build,install): Honor #:skip-build?.
* doc/guix.texi (Build Systems)[zig-build-system]: Update documentation.
* gnu/packages/zig.scm (zig-0.9)[native-search-paths]: Add
GUIX_ZIG_PACKAGE_PATH.
Use search paths defined in (guix search-paths).
(add-build.zig.zon,rename-zig-dependencies): New procedures.
* gnu/packages/ncdu.scm (ncdu)[arguments]: Don't install source.
* gnu/packages/zig-xyz.scm (river,tigerbeetle,zig-zls)[arguments]: Likewise.

1 files changed, 24 insertions, 11 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index c58468b910..924f13f0f6 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -10190,17 +10190,30 @@ build system (@command{zig build} command).
 Selecting this build system adds @code{zig} to the package inputs, in
 addition to the packages of @code{gnu-build-system}.
 
-There is no @code{configure} phase because Zig packages typically do not
-need to be configured.  The @code{#:zig-build-flags} parameter is a list of
-flags that are passed to the @code{zig} command during the build.  The
-@code{#:zig-test-flags} parameter is a list of flags that are passed to the
-@code{zig test} command during the @code{check} phase.  The default compiler
-package can be overridden with the @code{#:zig} argument.
-
-The optional @code{zig-release-type} parameter declares the type of release.
-Possible values are: @code{safe}, @code{fast}, or @code{small}. The default
-value is @code{#f}, which causes the release flag to be omitted from the
-@code{zig} command.  That results in a @code{debug} build.
+This build system by default installs package source to output.  This
+behavior can be disabled by setting @code{#:install-source?} parameter
+to @code{#f}.
+
+For packages that don't install anything and don't come with a test
+suite (likely library packages to be used by other Zig packages), you
+can set @code{#:skip-build?} parameter to @code{#t}, which skips
+@code{build} and @code{check} phases.
+
+The @code{configure} phase sets up environment for @command{zig build}.
+You need to add custom phases after it if you want to invoke
+@command{zig}.
+
+The @code{#:zig-build-flags} parameter is a list of flags that are
+passed to @command{zig build} in @code{build} phase.  The
+@code{#:zig-test-flags} parameter is a list of flags that are passed to
+@command{zig build test} in @code{check} phase.  The default compiler
+package can be overridden with the @code{#:zig} parameter.
+
+The optional @code{#:zig-release-type} parameter declares the type of
+release.  Possible values are: @code{"safe"}, @code{"fast"}, or
+@code{"small"}.  The default value is @code{#f}, which causes the
+release flag to be omitted from the @code{zig} command and results in a
+@code{"debug"} build.
 @end defvar
 
 @defvar scons-build-system