From 1bf6555e6a89248f079437b842dbaff9c107de9a Mon Sep 17 00:00:00 2001
Message-Id: <1bf6555e6a89248f079437b842dbaff9c107de9a.1697562942.git.zimon.toutoune@gmail.com>
From: Simon Tournier <zimon.toutoune@gmail.com>
Date: Tue, 17 Oct 2023 18:53:04 +0200
Subject: [PATCH] scripts: hash: Handle repository several VCS folders.

Fixes <https://issues.guix.gnu.org/issue/65979>.
Reported by Simon Tournier <zimon.toutoune@gmail.com>

* guix/hash.scm (vcs-file?): Add optional argument for passing VCS kind of the
file/repository.
(file-hash*): Adjust accordingly.
* guix/scripts/hash.scm (guix-hash)[file-hash]: Detect VCS kind of the
file/repository and passes it.
---
 guix/hash.scm         | 18 ++++++++++++------
 guix/scripts/hash.scm | 18 +++++++++++++-----
 2 files changed, 25 insertions(+), 11 deletions(-)

diff --git a/guix/hash.scm b/guix/hash.scm
index 3cb68e5c44..8fff51e8f1 100644
--- a/guix/hash.scm
+++ b/guix/hash.scm
@@ -1,6 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2021 Sarah Morgensen <iskarian@mgsn.dev>
 ;;; Copyright © 2022 Maxime Devos <maximedevos@telenet.be>
+;;; Copyright © 2023 Simon Tournier <zimon.toutoune@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -25,21 +26,26 @@ (define-module (guix hash)
   #:export (vcs-file?
             file-hash*))
 
-(define (vcs-file? file stat)
-  "Returns true if FILE is a version control system file."
+(define* (vcs-file? file stat
+                    #:optional
+                    (vcses (list ".bzr" ".git" ".hg" ".svn" "CVS")))
+  "Returns true if FILE matches a version control system from the list VCSES."
   (case (stat:type stat)
     ((directory)
-     (member (basename file) '(".bzr" ".git" ".hg" ".svn" "CVS")))
+     (member (basename file) vcses))
     ((regular)
-     ;; Git sub-modules have a '.git' file that is a regular text file.
-     (string=? (basename file) ".git"))
+     (if (member ".git" vcses)
+         ;; Git sub-modules have a '.git' file that is a regular text file.
+         (string=? (basename file) ".git")
+         #f))
     (else
      #f)))
 
 (define* (file-hash* file #:key
                      (algorithm (hash-algorithm sha256))
                      (recursive? 'auto)
-                     (select? (negate vcs-file?)))
+                     (select? (negate (lambda (file stat)
+                                        (vcs-file? file stat)))))
   "Compute the hash of FILE with ALGORITHM.
 
 Symbolic links are only dereferenced if RECURSIVE? is false.
diff --git a/guix/scripts/hash.scm b/guix/scripts/hash.scm
index 7197d3965c..ed96e6a7e1 100644
--- a/guix/scripts/hash.scm
+++ b/guix/scripts/hash.scm
@@ -3,7 +3,7 @@
 ;;; Copyright © 2013 Nikita Karetnikov <nikita@karetnikov.org>
 ;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
 ;;; Copyright © 2018 Tim Gesthuizen <tim.gesthuizen@yahoo.de>
-;;; Copyright © 2021 Simon Tournier <zimon.toutoune@gmail.com>
+;;; Copyright © 2021, 2023 Simon Tournier <zimon.toutoune@gmail.com>
 ;;; Copyright © 2021 Sarah Morgensen <iskarian@mgsn.dev>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -181,9 +181,6 @@ (define-command (guix-hash . args)
                             (_ #f))
                            (reverse opts)))
          (fmt  (assq-ref opts 'format))
-         (select? (if (assq-ref opts 'exclude-vcs?)
-                      (negate vcs-file?)
-                      (const #t)))
          (algorithm (assoc-ref opts 'hash-algorithm))
          (serializer (assoc-ref opts 'serializer)))
 
@@ -193,7 +190,18 @@ (define-command (guix-hash . args)
       (catch 'system-error
         (lambda _
           (with-error-handling
-            (serializer file algorithm select?)))
+            (let* ((vcses (fold (lambda (vcs result)
+                                  (if (file-exists? (string-append file "/" vcs))
+                                      (cons vcs result)
+                                      result))
+                                '()
+                                (list ".bzr" ".git" ".hg" ".svn" "CVS")))
+                   (select? (if (assq-ref opts 'exclude-vcs?)
+                                (negate (lambda (file stat)
+                                          (vcs-file? file stat
+                                                     vcses)))
+                                (const #t))))
+              (serializer file algorithm select?))))
         (lambda args
           (leave (G_ "~a ~a~%")
                  file

base-commit: dcc5c34504c94732c135a85fb4db40ca9796270e
-- 
2.38.1