diff --git a/glicid/packages/gcc.scm b/glicid/packages/gcc.scm
index 06fab9d..1555446 100644
--- a/glicid/packages/gcc.scm
+++ b/glicid/packages/gcc.scm
@@ -1,86 +1,15 @@
 (define-module (glicid packages gcc)
-;  #:use-module (guix build-system cmake)
   #:use-module (guix build-system gnu)
-;  #:use-module (guix build-system python)
   #:use-module (guix packages)
-  #:use-module (guix utils)
   #:use-module (gnu packages commencement)
   #:use-module (gnu packages gcc)
-  #:use-module (srfi srfi-1)
 )
 
-(define*
-  (custom-gcc gcc name languages
-    #:optional (search-paths (package-native-search-paths gcc))
-    #:key (separate-lib-output? #t)
-  )
-  "Return a custom version of GCC that supports LANGUAGES.  Use SEARCH-PATHS as the 'native-search-paths' field."
-  (package
-    (inherit gcc)
-    (name (string-append name "-upstream" ))
-    (outputs
-      (if separate-lib-output?
-        (package-outputs gcc)
-        (delete "lib" (package-outputs gcc))
-      )
-    )
-    (native-search-paths search-paths)
-    (properties
-      (alist-delete 'hidden? (package-properties gcc))
-    )
-    (arguments
-      (substitute-keyword-arguments (package-arguments gcc)
-        (
-          (#:modules modules %gnu-build-system-modules)
-          `(,@modules
-             (srfi srfi-1)
-             (srfi srfi-26)
-             (ice-9 regex)
-           )
-        )
-        (
-          (#:configure-flags flags)
-          `(cons
-             (string-append
-               "--enable-languages="
-               ,(string-join languages ",")
-             )
-             (remove (cut string-match "--enable-languages.*" <>) ,flags)
-          )
-        )
-        ((#:phases phases)
-          `(modify-phases ,phases
-             (add-after 'install 'remove-broken-or-conflicting-files
-               (lambda* (#:key outputs #:allow-other-keys)
-                 (for-each delete-file
-                   (find-files (string-append (assoc-ref outputs "out") "/bin") ".*(c\\+\\+|cpp|g\\+\\+|gcov|gcc|gcc-.*)")
-                 )
-                 #t
-               )
-             )
-           )
-        )
-      )
-    )
-  )
-)
 
-(define %generic-search-paths
-  ;; This is the language-neutral search path for GCC.  Entries in $CPATH are
-  ;; not considered "system headers", which means GCC can raise warnings for
-  ;; issues in those headers.  'CPATH' is the only one that works for
-  ;; front-ends not in the C family.
-  (list
-    (search-path-specification
-      (variable "CPATH")
-      (files '("include"))
-    )
-    (search-path-specification
-      (variable "LIBRARY_PATH")
-      (files '("lib" "lib64"))
-    )
-  )
-)
+;; beware : access to internal functions… this is probably not the good way…
+
+(define custom-gcc (@@ (gnu packages gcc) custom-gcc) )
+(define %generic-search-paths (@@ (gnu packages gcc) %generic-search-paths ))
 
 (define-public gfortran-11
   (hidden-package
@@ -90,26 +19,6 @@
   )
 )
 
-(define-public gfortran-10
-  (hidden-package
-    (custom-gcc gcc-10 "gfortran" '("fortran")
-      %generic-search-paths
-    )
-  )
-)
-
-(define-public gfortran-toolchain-10
-  (package 
-    (inherit (make-gcc-toolchain gfortran-10))
-    (synopsis "Complete GCC tool chain for fortean lang development")
-    (description "This package provides a complete GCC tool chain for
-                 fortran lang development to be installed in user profiles.  This includes
-                 fortran, as well as libc (headers and binaries, plus debugging symbols
-                 in the @code{debug} output), and binutils."
-    )
-  )
-)
-
 (define-public gfortran-toolchain-11
   (package 
     (inherit (make-gcc-toolchain gfortran-11))