gnu: guile: Update to 2.2.4.

* gnu/packages/guile.scm (guile-2.2): Update to 2.2.4.
(guile-2.2.4): Remove.
* gnu/packages/package-management.scm (guix)[inputs]: Switch to
GUILE-2.2.
* guix/self.scm (guile-for-build): Likewise.

gnu/packages/guile.scm

@@ -228,7 +228,7 @@ without requiring the source code to be rewritten.")
 (define-public guile-2.2
   (package (inherit guile-2.0)
     (name "guile")
-    (version "2.2.3")
+    (version "2.2.4")
     (source (origin
               (method url-fetch)
 
@@ -238,7 +238,7 @@ without requiring the source code to be rewritten.")
                                   ".tar.xz"))
               (sha256
                (base32
-                "11j01agvnci2cx32wwpqs9078856yxmvs15gcsz7ganpkj2ahlw3"))
+                "07p3g0v2ba2vlfbfidqzlgbhnzdx46wh2rgc5gszq1mjyx5bks6r"))
               (modules '((guix build utils)))
 
               ;; Remove the pre-built object files.  Instead, build everything
@@ -302,20 +302,6 @@ without requiring the source code to be rewritten.")
                (base32
                 "1azm25zcmxif0skxfrp11d2wc89nrzpjaann9yxdw6pvjxhs948w"))))))
 
-(define-public guile-2.2.4
-  ;; This version contains important bug fixes, in particular wrt. to crashes
-  ;; of multi-threaded code as used by 'guix pull' and grafting.
-  (package
-    (inherit guile-2.2)
-    (version "2.2.4")
-    (source (origin
-              (inherit (package-source guile-2.2))
-              (uri (string-append "mirror://gnu/guile/guile-" version
-                                  ".tar.xz"))
-              (sha256
-               (base32
-                "07p3g0v2ba2vlfbfidqzlgbhnzdx46wh2rgc5gszq1mjyx5bks6r"))))))
-
 (define-public guile-next
   (deprecated-package "guile-next" guile-2.2))
 

gnu/packages/package-management.scm

@@ -264,9 +264,7 @@
          ("sqlite" ,sqlite)
          ("libgcrypt" ,libgcrypt)
 
-         ;; Use 2.2.4 to avoid various thread-safety issues while building
-         ;; code in parallel.
-         ("guile" ,guile-2.2.4)
+         ("guile" ,guile-2.2)
 
          ;; Many tests rely on the 'guile-bootstrap' package, which is why we
          ;; have it here.

guix/self.scm

@@ -896,10 +896,8 @@ running Guile."
      (module-ref (resolve-interface '(gnu packages guile))
                  'guile-2.2.2))
     ("2.2"
-     ;; Use the latest version, which has fixes for
-     ;; <https://bugs.gnu.org/30602> and VM stack-marking issues.
      (canonical-package (module-ref (resolve-interface '(gnu packages guile))
-                                    'guile-2.2.4)))
+                                    'guile-2.2)))
     ("2.0"
      (module-ref (resolve-interface '(gnu packages guile))
                  'guile-2.0))))