GNU bug report logs - #74767
[PATCH rust-team 00/23] Add py-spy.

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From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: 74767 <at> debbugs.gnu.org
Cc: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>, Efraim Flashner <efraim <at> flashner.co.il>
Subject: [bug#74767] [PATCH rust-team 02/23] build/cargo: Honor #:parallel-build? and #:parallel-tests? arguments.
Date: Tue, 10 Dec 2024 23:21:05 +0900

* guix/build-system/cargo.scm (cargo-build): Add #:parallel-build? and
 #:parallel-tests? arguments.
(cargo-cross-build): Likewise.
* guix/build/cargo-build-system.scm (build): Honor them.
(check): Likewise.

Change-Id: Idbee7aa3a6a7cd0fc222082837390b83cc8e8c07
---
 guix/build-system/cargo.scm       |  9 +++++++++
 guix/build/cargo-build-system.scm | 23 ++++++++++++++++++++---
 2 files changed, 29 insertions(+), 3 deletions(-)

diff --git a/guix/build-system/cargo.scm b/guix/build-system/cargo.scm
index f24ff6195e..ea841a34eb 100644
--- a/guix/build-system/cargo.scm
+++ b/guix/build-system/cargo.scm
@@ -6,6 +6,7 @@
 ;;; Copyright © 2019 Ivan Petkov <ivanppetkov <at> gmail.com>
 ;;; Copyright © 2020 Jakub Kądziołka <kuba <at> kadziolka.net>
 ;;; Copyright © 2021, 2024 Efraim Flashner <efraim <at> flashner.co.il>
+;;; Copyright © 2024 Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -95,6 +96,8 @@ (define* (cargo-build name inputs
                       (cargo-package-flags ''("--no-metadata" "--no-verify"))
                       (features ''())
                       (skip-build? #f)
+                      (parallel-build? #t)
+                      (parallel-tests? #t)
                       (install-source? #t)
                       (phases '%standard-phases)
                       (outputs '("out"))
@@ -122,6 +125,8 @@ (define* (cargo-build name inputs
                        #:cargo-target #$(cargo-triplet system)
                        #:features #$(sexp->gexp features)
                        #:skip-build? #$skip-build?
+                       #:parallel-build? #$parallel-build?
+                       #:parallel-tests? #$parallel-tests?
                        #:install-source? #$install-source?
                        #:tests? #$(and tests? (not skip-build?))
                        #:phases #$(if (pair? phases)
@@ -152,6 +157,8 @@ (define* (cargo-cross-build name
                             (cargo-target (cargo-triplet (or target system)))
                             (features ''())
                             (skip-build? #f)
+                            (parallel-build? #t)
+                            (parallel-tests? #t)
                             (install-source? (not (target-mingw? target)))
                             (phases '%standard-phases)
                             (outputs '("out"))
@@ -181,6 +188,8 @@ (define* (cargo-cross-build name
                        #:cargo-target #$(cargo-triplet (or target system))
                        #:features #$(sexp->gexp features)
                        #:skip-build? #$skip-build?
+                       #:parallel-build? #$parallel-build?
+                       #:parallel-tests? #$parallel-tests?
                        #:install-source? #$install-source?
                        #:tests? #$(and tests? (not skip-build?))
                        #:phases #$(if (pair? phases)
diff --git a/guix/build/cargo-build-system.scm b/guix/build/cargo-build-system.scm
index 84897393d9..d125ff20ca 100644
--- a/guix/build/cargo-build-system.scm
+++ b/guix/build/cargo-build-system.scm
@@ -5,6 +5,7 @@
 ;;; Copyright © 2019-2024 Efraim Flashner <efraim <at> flashner.co.il>
 ;;; Copyright © 2020 Jakub Kądziołka <kuba <at> kadziolka.net>
 ;;; Copyright © 2020 Marius Bakke <marius <at> gnu.org>
+;;; Copyright © 2024 Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -239,19 +240,35 @@ (define* (build #:key
   (or skip-build?
       (apply invoke
              `("cargo" "build"
+               ,@(if parallel-build?
+                     (list "-j" (number->string (parallel-job-count)))
+                     '())
                ,@(if (null? features)
                      '()
                      `("--features" ,(string-join features)))
                ,@cargo-build-flags))))
 
 (define* (check #:key
+                parallel-build?
+                parallel-tests?
                 tests?
                 (cargo-test-flags '("--release"))
                 #:allow-other-keys)
   "Run tests for a given Cargo package."
-  (if tests?
-      (apply invoke "cargo" "test" cargo-test-flags)
-      #t))
+  (when tests?
+    (apply invoke
+           `("cargo" "test"
+             ,@(if parallel-build?
+                   (list "-j" (number->string (parallel-job-count)))
+                   '())
+             ,@cargo-test-flags
+             ,@(if parallel-tests?
+                   (append (if (member "--" cargo-test-flags)
+                               '()
+                               '("--"))
+                           (list "--test-threads"
+                                 (number->string (parallel-job-count))))
+                   '())))))
 
 (define* (package #:key
                   source
-- 
2.46.0

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