GNU bug report logs - #77093
[PATCH rust-team 00/18] New Rust packaging workflow based on lockfile importer.

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From: Hilton Chain <hako <at> ultrarare.space>
To: 77093 <at> debbugs.gnu.org
Cc: Hilton Chain <hako <at> ultrarare.space>, Divya Ranjan Pattanaik <divya <at> subvertising.org>, Efraim Flashner <efraim <at> flashner.co.il>, Hilton Chain <hako <at> ultrarare.space>, Steve George <steve <at> futurile.net>
Subject: [bug#77093] [PATCH v4 rust-team 08/22] build/cargo: Print out all non-empty binary files.
Date: Tue, 29 Apr 2025 00:23:05 +0800

* guix/build/cargo-build-system.scm (%standard-phases): Move
‘unpack-rust-crates’ after ‘unpack’.
Move ‘check-for-pregenerated-files’ after ‘configure’.
(check-for-pregenerated-files): Only check non-empty files.
Print out binary files.
Run in parallel.
Don't fail to keep compatibility for phase order change.

Change-Id: I0a332fe843e97687324bd908fa111422a63e475d
---
 guix/build/cargo-build-system.scm | 33 +++++++++++++++++++++++++------
 1 file changed, 27 insertions(+), 6 deletions(-)

diff --git a/guix/build/cargo-build-system.scm b/guix/build/cargo-build-system.scm
index 41f54f42b7..c37fd70418 100644
--- a/guix/build/cargo-build-system.scm
+++ b/guix/build/cargo-build-system.scm
@@ -27,11 +27,14 @@ (define-module (guix build cargo-build-system)
   #:use-module ((guix build gnu-build-system) #:prefix gnu:)
   #:use-module (guix build json)
   #:use-module ((guix build utils) #:hide (delete))
+  #:use-module (ice-9 binary-ports)
   #:use-module (ice-9 popen)
   #:use-module (ice-9 rdelim)
+  #:use-module (ice-9 regex)
   #:use-module (ice-9 ftw)
   #:use-module (ice-9 format)
   #:use-module (ice-9 match)
+  #:use-module (ice-9 threads)
   #:use-module (srfi srfi-1)
   #:use-module (srfi srfi-26)
   #:export (%standard-phases
@@ -111,12 +114,30 @@ (define* (unpack-rust-crates #:key inputs vendor-dir #:allow-other-keys)
 (define (rust-package? name)
   (string-prefix? "rust-" name))
 
-(define* (check-for-pregenerated-files #:rest _)
+(define* (check-for-pregenerated-files #:key parallel-build? #:allow-other-keys)
   "Check the source code for files which are known to generally be bundled
 libraries or executables."
-  (let ((pregenerated-files (find-files "." "\\.(a|dll|dylib|exe|lib)$")))
-    (when (not (null-list? pregenerated-files))
-      (error "Possible pre-generated files found:" pregenerated-files))))
+  (format #t "Searching for binary files...~%")
+  (let ((known-pattern (make-regexp "\\.(a|dll|dylib|exe|lib)$"))
+        (empty-file?
+         (lambda (file stat)
+           (let ((size (stat:size stat)))
+             (or (zero? size)
+                 (and (eqv? 1 size)
+                      (eqv? #\newline
+                            (call-with-ascii-input-file file read-char))))))))
+    (n-par-for-each
+     (if parallel-build?
+         (parallel-job-count)
+         1)
+     (lambda (file)
+       ;; Print out binary files.
+       (false-if-exception (invoke "grep" "-IL" "." file))
+       ;; Warn about known pre-generated files.
+       ;; Not failing here for compatibility with existing packages.
+       (when (regexp-exec known-pattern file)
+         (format #t "error: Possible pre-generated file found: ~a~%" file)))
+     (find-files "." (negate empty-file?)))))
 
 (define* (configure #:key inputs
                     target system
@@ -380,8 +401,8 @@ (define %standard-phases
     (replace 'check check)
     (replace 'install install)
     (add-after 'build 'package package)
-    (add-after 'unpack 'check-for-pregenerated-files check-for-pregenerated-files)
-    (add-after 'check-for-pregenerated-files 'unpack-rust-crates unpack-rust-crates)
+    (add-after 'unpack 'unpack-rust-crates unpack-rust-crates)
+    (add-after 'configure 'check-for-pregenerated-files check-for-pregenerated-files)
     (add-after 'patch-generated-file-shebangs 'patch-cargo-checksums patch-cargo-checksums)))
 
 (define* (cargo-build #:key inputs (phases %standard-phases)
-- 
2.49.0

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