From ad94f06620e53fcc1495a2e2479dfc627177047c Mon Sep 17 00:00:00 2001
Message-ID: <ad94f06620e53fcc1495a2e2479dfc627177047c.1692783678.git.janneke@gnu.org>
From: Janneke Nieuwenhuizen <janneke@gnu.org>
Date: Thu, 22 Jun 2023 08:30:25 +0200
Subject: [PATCH v4] self: Build directories in chunks of max 25 files at a
 time.

Similar to split build of make-go in Makefile.am, this breaks-up building
directories into chunks of max 25 files.  Also force garbage collection.

* guix/self.scm (compiled-modules)[process-directory]: Split building of
directories into chunks of max 25 files.
---
 guix/self.scm | 27 ++++++++++++++++++++-------
 1 file changed, 20 insertions(+), 7 deletions(-)

diff --git a/guix/self.scm b/guix/self.scm
index 81a36e007f..fc2dfd8131 100644
--- a/guix/self.scm
+++ b/guix/self.scm
@@ -1,6 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2017-2023 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2020 Martin Becze <mjbecze@riseup.net>
+;;; Copyright © 2023 Janneke Nieuwenhuizen <janneke@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -1210,7 +1211,8 @@ (define* (compiled-modules name module-tree module-files
                             '((guix build compile)
                               (guix build utils)))
       #~(begin
-          (use-modules (srfi srfi-26)
+          (use-modules (srfi srfi-1)
+                       (srfi srfi-26)
                        (ice-9 match)
                        (ice-9 format)
                        (ice-9 threads)
@@ -1244,12 +1246,23 @@ (define* (compiled-modules name module-tree module-files
             (force-output))
 
           (define (process-directory directory files output)
-            ;; Hide compilation warnings.
-            (parameterize ((current-warning-port (%make-void-port "w")))
-              (compile-files directory #$output files
-                             #:workers (parallel-job-count)
-                             #:report-load report-load
-                             #:report-compilation report-compilation)))
+            (let* ((size 25)                      ;compile max 25 files a time
+                   (chunks (unfold
+                            (lambda (seed) (< (length seed) size)) ;p
+                            (cute take <> size)                    ;f
+                            (cute drop <> size)                    ;g
+                            files                                  ;seed
+                            list)))                                ;tail
+              (for-each
+               (lambda (chunck)
+                 ;; Hide compilation warnings.
+                 (parameterize ((current-warning-port (%make-void-port "w")))
+                   (compile-files directory output chunck
+                                  #:workers (parallel-job-count)
+                                  #:report-load report-load
+                                  #:report-compilation report-compilation))
+                 (gc))
+               chunks)))
 
           (setvbuf (current-output-port) 'line)
           (setvbuf (current-error-port) 'line)

base-commit: f4d0d0bd5e7d0e67281d84d81068f7fd5eb480ea
-- 
2.41.0