GNU bug report logs - #73416
[PATCH core-updates] build: Set $0 to basename of command in `wrap-program'.

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Subject: bug#73416: closed (Re: bug#73416: [PATCH core-updates] build: Set
 $0 to basename of command in `wrap-program'.)
Date: Sat, 22 Mar 2025 22:36:03 +0000

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Your bug report

#73416: [PATCH core-updates] build: Set $0 to basename of command in `wrap-program'.

which was filed against the guix-patches package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 73416 <at> debbugs.gnu.org.

-- 
73416: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=73416
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Ludovic Courtès <ludo <at> gnu.org>
To: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Cc: 73416-done <at> debbugs.gnu.org, Andreas Enge <andreas <at> enge.fr>,
 73405-done <at> debbugs.gnu.org
Subject: Re: bug#73416: [PATCH core-updates] build: Set $0 to basename of
 command in `wrap-program'.
Date: Sat, 22 Mar 2025 23:35:28 +0100

Maxim Cournoyer <maxim.cournoyer <at> gmail.com> skribis:

> * guix/build/utils.scm (wrap-program): Set the value of the -a option of
> `exec' in the wrapper to ${0##*/} instead of $0, to use its base name instead
> of the complete file name.
>
> Fixes: https://issues.guix.gnu.org/73405
> Change-Id: Iec5984d4d934c8df88a90ff653947f7d07413ae4

Applied to ‘core-packages-team’, thanks!

Ludo’.

[Message part 3 (message/rfc822, inline)]

From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: guix-patches <at> gnu.org
Cc: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Subject: [PATCH core-updates] build: Set $0 to basename of command in
 `wrap-program'.
Date: Sun, 22 Sep 2024 15:06:18 +0900

* guix/build/utils.scm (wrap-program): Set the value of the -a option of
`exec' in the wrapper to ${0##*/} instead of $0, to use its base name instead
of the complete file name.

Fixes: https://issues.guix.gnu.org/73405
Change-Id: Iec5984d4d934c8df88a90ff653947f7d07413ae4
---

 guix/build/utils.scm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/guix/build/utils.scm b/guix/build/utils.scm
index 94714bf397..7003d8262f 100644
--- a/guix/build/utils.scm
+++ b/guix/build/utils.scm
@@ -1355,7 +1355,7 @@ (define* (wrap-program prog #:key (sh (which "bash")) #:rest vars)
   #!location/of/bin/bash
   export PATH=\"/gnu/.../bar/bin\"
   export CERT_PATH=\"$CERT_PATH${CERT_PATH:+:}/gnu/.../baz/certs:/qux/certs\"
-  exec -a $0 location/of/.foo-real \"$@\"
+  exec -a \"${0##*/}\" location/of/.foo-real \"$@\"
 
 This is useful for scripts that expect particular programs to be in $PATH, for
 programs that expect particular shared libraries to be in $LD_LIBRARY_PATH, or
@@ -1432,7 +1432,7 @@ (define* (wrap-program prog #:key (sh (which "bash")) #:rest vars)
         (call-with-output-file prog-tmp
           (lambda (port)
             (format port
-                    "#!~a~%~a~%exec -a \"$0\" \"~a\" \"$@\"~%"
+                    "#!~a~%~a~%exec -a \"${0##*/}\" \"~a\" \"$@\"~%"
                     sh
                     (string-join (map export-variable vars/filtered) "\n")
                     (canonicalize-path wrapped-file))))

base-commit: 2c54c2db410ebdda8cd71716315e4ea4d31befbd
-- 
2.46.0

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