package-lists: Rename 'dev' to 'next'.

.package-lists/guix-next-channels.scm

@@ -2,17 +2,17 @@
         (name 'nonguix)
         (url "https://gitlab.com/nonguix/nonguix.git")
         (commit
-          "fbc8431a2a50fab872f7e9f3765e2b6c60ae656e"))
+          "30e93befe5b1e5c1295271cbb27d5d1a5e728f05"))
       (channel
         (name 'guix-gaming-games)
         (url "https://gitlab.com/guix-gaming-channels/games.git")
         (commit
-          "4f3889a4a61844c63255582e0c614c1187fd8c4e"))
+          "870ceb78c43bcd648117b508ce7f03877b679960"))
       (channel
         (name 'guix-gaming-duke-nukem-3d)
         (url "https://gitlab.com/guix-gaming-channels/duke-nukem-3d.git")
         (commit
-          "ab13db32b35c4eb043a0f8d66b47c700373ff2a8"))
+          "4861a022c43b9e45f8845fd08948bf163604f534"))
       (channel
         (name 'guix-gaming-quake-3)
         (url "https://gitlab.com/guix-gaming-channels/quake-3.git")
@@ -22,4 +22,4 @@
         (name 'guix)
         (url "https://git.savannah.gnu.org/git/guix.git")
         (commit
-          "59d452da401c375e7bd18d2260c2e42ee0d05b72")))
+          "e7b86a0d88760275afefa0c44a3c30602f80aac0")))

.package-lists/guix-next-manifest.scm

@@ -1,6 +1,7 @@
 (specifications->manifest
   '("ccl"
     ;; "diffoscope" ; TODO: Do I really use it?
+    "gcc-toolchain"                     ; Needed to compile some Common Lisp FFI.
     "glib-networking"                   ; For Next local dev.
     "gobject-introspection"             ; For Next with GI.
     "gsettings-desktop-schemas"         ; For Next local dev.