diff --git a/guix/gexp.scm b/guix/gexp.scm
index 4f2adba90a..9bf68a91f4 100644
--- a/guix/gexp.scm
+++ b/guix/gexp.scm
@@ -633,12 +633,6 @@ (define* (gexp->derivation name exp
                            leaked-env-vars
                            local-build? (substitutable? #t)
                            (properties '())
-
-                           ;; TODO: This parameter is transitional; it's here
-                           ;; to avoid a full rebuild.  Remove it on the next
-                           ;; rebuild cycle.
-                           (pre-load-modules? #t)
-
                            deprecation-warnings
                            (script-name (string-append name "-builder")))
   "Return a derivation NAME that runs EXP (a gexp) with GUILE-FOR-BUILD (a
@@ -743,8 +737,6 @@ (define (extension-flags extension)
                                                        #:module-path module-path
                                                        #:extensions extensions
                                                        #:guile guile-for-build
-                                                       #:pre-load-modules?
-                                                       pre-load-modules?
                                                        #:deprecation-warnings
                                                        deprecation-warnings)
                                      (return #f)))
@@ -1220,11 +1212,7 @@ (define* (compiled-modules modules
                            (guile (%guile-for-build))
                            (module-path %load-path)
                            (extensions '())
-                           (deprecation-warnings #f)
-
-                           ;; TODO: This flag is here to prevent a full
-                           ;; rebuild.  Remove it on the next rebuild cycle.
-                           (pre-load-modules? #t))
+                           (deprecation-warnings #f))
   "Return a derivation that builds a tree containing the `.go' files
 corresponding to MODULES.  All the MODULES are built in a context where
 they can refer to each other."
@@ -1257,11 +1245,8 @@ (define (process-entry entry output processed)
                (let* ((base   (basename entry ".scm"))
                       (output (string-append output "/" base ".go")))
                  (format #t "[~2@a/~2@a] Compiling '~a'...~%"
-                         (+ 1 processed
-                              (ungexp-splicing (if pre-load-modules?
-                                                   (gexp ((ungexp total)))
-                                                   (gexp ()))))
-                         (ungexp (* total (if pre-load-modules? 2 1)))
+                         (+ 1 processed (ungexp total))
+                         (ungexp (* total 2))
                          entry)
                  (compile-file entry
                                #:output-file output
@@ -1275,6 +1260,26 @@ (define (process-directory directory output processed)
                    processed
                    entries)))
 
+         (define* (load-from-directory directory
+                                       #:optional (loaded 0))
+           "Load all the source files found in DIRECTORY."
+           ;; XXX: This works around <https://bugs.gnu.org/15602>.
+           (let ((entries (map (cut string-append directory "/" <>)
+                               (scandir directory regular?))))
+             (fold (lambda (file loaded)
+                     (if (file-is-directory? file)
+                         (load-from-directory file loaded)
+                         (begin
+                           (format #t "[~2@a/~2@a] Loading '~a'...~%"
+                                   (+ 1 loaded) (ungexp (* 2 total))
+                                   file)
+                           (save-module-excursion
+                            (lambda ()
+                              (primitive-load file)))
+                           (+ 1 loaded))))
+                   loaded
+                   entries)))
+
          (setvbuf (current-output-port)
                   (cond-expand (guile-2.2 'line) (else _IOLBF)))
 
@@ -1310,32 +1315,7 @@ (define mkdir-p
          (mkdir (ungexp output))
          (chdir (ungexp modules))
 
-         (ungexp-splicing
-          (if pre-load-modules?
-              (gexp ((define* (load-from-directory directory
-                                                   #:optional (loaded 0))
-                       "Load all the source files found in DIRECTORY."
-                       ;; XXX: This works around <https://bugs.gnu.org/15602>.
-                       (let ((entries (map (cut string-append directory "/" <>)
-                                           (scandir directory regular?))))
-                         (fold (lambda (file loaded)
-                                 (if (file-is-directory? file)
-                                     (load-from-directory file loaded)
-                                     (begin
-                                       (format #t "[~2@a/~2@a] Loading '~a'...~%"
-                                               (+ 1 loaded)
-                                               (ungexp (* 2 total))
-                                               file)
-                                       (save-module-excursion
-                                        (lambda ()
-                                          (primitive-load file)))
-                                       (+ 1 loaded))))
-                               loaded
-                               entries)))
-
-                     (load-from-directory ".")))
-              (gexp ())))
-
+         (load-from-directory ".")
          (process-directory "." (ungexp output) 0))))
 
     ;; TODO: Pass MODULES as an environment variable.
diff --git a/guix/packages.scm b/guix/packages.scm
index 9cd4cbc416..92859be441 100644
--- a/guix/packages.scm
+++ b/guix/packages.scm
@@ -642,9 +642,6 @@ (define (first-file directory)
 
     (let ((name (tarxz-name original-file-name)))
       (gexp->derivation name build
-                        ;; TODO: Remove this on the next rebuild cycle.
-                        #:pre-load-modules? #f
-
                         #:graft? #f
                         #:system system
                         #:deprecation-warnings #t ;to avoid a rebuild