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-rw-r--r--guix/gexp.scm28
1 files changed, 28 insertions, 0 deletions
diff --git a/guix/gexp.scm b/guix/gexp.scm
index dd5eb81bd3..fdfd734245 100644
--- a/guix/gexp.scm
+++ b/guix/gexp.scm
@@ -1075,6 +1075,14 @@ last one is created from the given <scheme-file> object."
"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."
+ (define build-utils-hack?
+ ;; To avoid a full rebuild, we limit the fix below to the case where
+ ;; MODULE-PATH is different from %LOAD-PATH. This happens when building
+ ;; modules for 'compute-guix-derivation' upon 'guix pull'. TODO: Make
+ ;; this unconditional on the next rebuild cycle.
+ (and (member '(guix build utils) modules)
+ (not (equal? module-path %load-path))))
+
(mlet %store-monad ((modules (imported-modules modules
#:system system
#:guile guile
@@ -1114,7 +1122,27 @@ they can refer to each other."
%auto-compilation-options))))
entries)))
+ (ungexp-splicing
+ (if build-utils-hack?
+ (gexp ((define mkdir-p
+ ;; Capture 'mkdir-p'.
+ (@ (guix build utils) mkdir-p))))
+ '()))
+
(set! %load-path (cons (ungexp modules) %load-path))
+
+ (ungexp-splicing
+ (if build-utils-hack?
+ ;; Above we loaded our own (guix build utils) but now we may
+ ;; need to load a compile a different one. Thus, force a
+ ;; reload.
+ (gexp ((let ((utils (ungexp
+ (file-append modules
+ "/guix/build/utils.scm"))))
+ (when (file-exists? utils)
+ (load utils)))))
+ '()))
+
(mkdir (ungexp output))
(chdir (ungexp modules))
(process-directory "." (ungexp output)))))