Subject: [PATCH 31/43] build-system: pyproject: Redefine pyproject-build.

From: Nicolas Graves <[email-masked]>
Date: Tue, 12 Aug 2025 11:04:39 +0200

* guix/build-system/pyproject.scm
(pyproject-build): Monadic procedure returns a gexp instead of a derivation.

Change-Id: Ia26001291b472c69c65647d8bddd1199f0ddc483
---
 guix/build-system/pyproject.scm | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/guix/build-system/pyproject.scm b/guix/build-system/pyproject.scm
index 4ad4dc79a1e..b39f27a2f0a 100644
--- a/guix/build-system/pyproject.scm
+++ b/guix/build-system/pyproject.scm
@@ -1,6 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2021 Lars-Dominik Braun <[email-masked]>
 ;;; Copyright © 2022 Marius Bakke <[email-masked]>
+;;; Copyright © 2024 Nicolas Graves <[email-masked]>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -113,7 +114,7 @@ (define* (pyproject-build name inputs
                           allowed-references
                           disallowed-references)
   "Build SOURCE using PYTHON, and with INPUTS."
-  (define build
+  (define builder
     (with-imported-modules imported-modules
       #~(begin
           (use-modules #$@(sexp->gexp modules))
@@ -138,16 +139,8 @@ (define build
                                          search-paths))
                  #:inputs %build-inputs)))))
 
-
-  (mlet %store-monad ((guile (package->derivation (or guile (default-guile))
-                                                  system #:graft? #f)))
-    (gexp->derivation name build
-                      #:system system
-                      #:graft? #f                 ;consistent with 'gnu-build'
-                      #:target #f
-                      #:guile-for-build guile
-                      #:allowed-references allowed-references
-                      #:disallowed-references disallowed-references)))
+  (mbegin %store-monad
+    (return builder)))
 
 (define pyproject-build-system
   (build-system
-- 
2.50.1