gnu: guile-json: Rename "guile2.2-json" to "guile-json".

* gnu/packages/guile.scm (guile-json)[native-inputs]: Change GUILE-2.0
to GUILE-2.2.
(guile2.2-json): Define using 'deprecated-package'.
(guile2.0-json): New variable.
* gnu/packages/bioinformatics.scm (rcas-web)[inputs]: Update accordingly.
* gnu/packages/ci.scm (cuirass)[inputs]: Likewise.
* gnu/packages/package-management.scm (guix)[inputs]: Likewise.

gnu/packages/bioinformatics.scm

@@ -7891,7 +7891,7 @@ library implementing most of the pipeline's features.")
      `(("r-minimal" ,r-minimal)
        ("r-rcas" ,r-rcas)
        ("guile-next" ,guile-2.2)
-       ("guile-json" ,guile2.2-json)
+       ("guile-json" ,guile-json)
        ("guile-redis" ,guile2.2-redis)))
     (native-inputs
      `(("pkg-config" ,pkg-config)))

gnu/packages/ci.scm

@@ -247,7 +247,7 @@ their dependencies.")
                  #t))))))
       (inputs
        `(("guile" ,guile-2.2)
-         ("guile-json" ,guile2.2-json)
+         ("guile-json" ,guile-json)
          ("guile-sqlite3" ,guile-sqlite3)
          ("guix" ,guix)
          ("git" ,git)))

gnu/packages/guile.scm

@@ -691,7 +691,7 @@ for Guile\".")
                     (("moddir =.*/share/guile/site" all)
                      (string-append all "/@GUILE_EFFECTIVE_VERSION@")))))))
     (build-system gnu-build-system)
-    (native-inputs `(("guile" ,guile-2.0)))
+    (native-inputs `(("guile" ,guile-2.2)))
     (home-page "http://savannah.nongnu.org/projects/guile-json/")
     (synopsis "JSON module for Guile")
     (description
@@ -707,7 +707,10 @@ specification.  These are the main features:
     (license license:lgpl3+)))
 
 (define-public guile2.2-json
-  (package-for-guile-2.2 guile-json))
+  (deprecated-package "guile2.2-json" guile-json))
+
+(define-public guile2.0-json
+  (package-for-guile-2.0 guile-json))
 
 (define-public guile-minikanren
   (package

gnu/packages/package-management.scm

@@ -248,7 +248,7 @@
                           "1giy2aprjmn5fp9c4s9r125fljw4wv6ixy5739i5bffw4jgr0f9r"))))))
       (propagated-inputs
        `(("gnutls" ,gnutls/guile-2.2)             ;for 'guix download' & co.
-         ("guile-json" ,guile2.2-json)
+         ("guile-json" ,guile-json)
          ("guile-ssh" ,guile2.2-ssh)))
 
       (home-page "https://www.gnu.org/software/guix/")