maint: Switch to Guile-JSON 3.x.

Guile-JSON 3.x is incompatible with Guile-JSON 1.x, which we relied on
until now: it maps JSON dictionaries to alists (instead of hash tables),
and JSON arrays to vectors (instead of lists).  This commit is about
adjusting all the existing code to this new mapping.

* m4/guix.m4 (GUIX_CHECK_GUILE_JSON): New macro.
* configure.ac: Use it.
* doc/guix.texi (Requirements): Mention the Guile-JSON version.
* guix/git-download.scm (git-fetch)[guile-json]: Use GUILE-JSON-3.
* guix/import/cpan.scm (string->license): Expect vectors instead of
lists.
(module->dist-name): Use 'json-fetch' instead of 'json-fetch-alist'.
(cpan-fetch): Likewise.
* guix/import/crate.scm (crate-fetch): Likewise, and call 'vector->list'
for DEPS.
* guix/import/gem.scm (rubygems-fetch): Likewise.
* guix/import/json.scm (json-fetch-alist): Remove.
* guix/import/pypi.scm (pypi-fetch): Use 'json-fetch' instead of
'json-fetch-alist'.
(latest-source-release, latest-wheel-release): Call 'vector->list' on
RELEASES.
* guix/import/stackage.scm (stackage-lts-info-fetch): Use 'json-fetch'
instead of 'json-fetch-alist'.
(lts-package-version): Use 'vector->list'.
* guix/import/utils.scm (hash-table->alist): Remove.
(alist->package): Pass 'vector->list' on the inputs fields, and default
to the empty vector.
* guix/scripts/import/json.scm (guix-import-json): Remove call to
'hash-table->alist'.
* guix/swh.scm (define-json-reader): Expect pair? or null? instead of
hash-table?.
[extract-field]: Use 'assoc-ref' instead of 'hash-ref'.
(json->branches): Use 'map' instead of 'hash-map->list'.
(json->checksums): Likewise.
(json->directory-entries, origin-visits): Call 'vector->list' on the
result of 'json->scm'.
* tests/import-utils.scm ("alist->package with dependencies"): New test.
* gnu/installer.scm (build-compiled-file)[builder]: Use GUILE-JSON-3.
* gnu/installer.scm (installer-program)[installer-builder]: Likewise.
* gnu/installer/locale.scm (iso639->iso639-languages): Use 'assoc-ref'
instead of 'hash-ref', and pass vectors through 'vector->list'.
(iso3166->iso3166-territories): Likewise.
* gnu/system/vm.scm (system-docker-image)[build]: Use GUILE-JSON-3.
* guix/docker.scm (manifest, config): Adjust for Guile-JSON 3.
* guix/scripts/pack.scm (docker-image)[build]: Use GUILE-JSON-3.
* guix/import/github.scm (fetch-releases-or-tags): Update docstring.
(latest-released-version): Use 'assoc-ref' instead of 'hash-ref'.  Pass
the result of 'fetch-releases-or-tags' to 'vector->list'.
* guix/import/launchpad.scm (latest-released-version): Likewise.

1 files changed, 12 insertions, 9 deletions

diff --git a/gnu/installer/locale.scm b/gnu/installer/locale.scm
index 13f3a1e881..ccffb6d8ef 100644
--- a/gnu/installer/locale.scm
+++ b/gnu/installer/locale.scm
@@ -134,16 +134,18 @@ ISO639-3 and ISO639-5 files."
         (lambda (port-iso639-5)
           (filter-map
            (lambda (hash)
-             (let ((alpha2 (hash-ref hash "alpha_2"))
-                   (alpha3 (hash-ref hash "alpha_3"))
-                   (name   (hash-ref hash "name")))
+             (let ((alpha2 (assoc-ref hash "alpha_2"))
+                   (alpha3 (assoc-ref hash "alpha_3"))
+                   (name   (assoc-ref hash "name")))
                (and (supported-locale? locales alpha2 alpha3)
                     `((alpha2 . ,alpha2)
                       (alpha3 . ,alpha3)
                       (name   . ,name)))))
            (append
-            (hash-ref (json->scm port-iso639-3) "639-3")
-            (hash-ref (json->scm port-iso639-5) "639-5"))))))))
+            (vector->list
+             (assoc-ref (json->scm port-iso639-3) "639-3"))
+            (vector->list
+             (assoc-ref (json->scm port-iso639-5) "639-5")))))))))
 
 (define (language-code->language-name languages language-code)
   "Using LANGUAGES as a list of ISO639 association lists, return the language
@@ -179,10 +181,11 @@ ISO3166 file."
   (call-with-input-file iso3166
     (lambda (port)
       (map (lambda (hash)
-             `((alpha2 . ,(hash-ref hash "alpha_2"))
-               (alpha3 . ,(hash-ref hash "alpha_3"))
-               (name   . ,(hash-ref hash "name"))))
-           (hash-ref (json->scm port) "3166-1")))))
+             `((alpha2 . ,(assoc-ref hash "alpha_2"))
+               (alpha3 . ,(assoc-ref hash "alpha_3"))
+               (name   . ,(assoc-ref hash "name"))))
+           (vector->list
+            (assoc-ref (json->scm port) "3166-1"))))))
 
 (define (territory-code->territory-name territories territory-code)
   "Using TERRITORIES as a list of ISO3166 association lists return the