GNU bug report logs - #78437
[PATCH] gnu: git-minimal: Fix ugly output of git submodule -h.

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From: Ian Eure <ian <at> retrospec.tv>
To: Nicolas Graves <ngraves <at> ngraves.fr>
Cc: 78437 <at> debbugs.gnu.org
Subject: [bug#78437] [PATCH] gnu: git-minimal: Fix ugly output of git submodule -h.
Date: Thu, 22 May 2025 21:36:13 -0700

Hi Nicolas,

Nicolas Graves <ngraves <at> ngraves.fr> writes:

> * gnu/packages/version-control.scm 
> (git-minimal)[arguments]<phases>:
> Adjust the snippet patching git-submodule.sh to avoid the ugly
> ".git submodule-real" from git submodule -h.
> ---
>  gnu/packages/version-control.scm | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
>
> diff --git a/gnu/packages/version-control.scm 
> b/gnu/packages/version-control.scm
> index ed96b524f83..f4bae91906d 100644
> --- a/gnu/packages/version-control.scm
> +++ b/gnu/packages/version-control.scm
> @@ -437,13 +437,11 @@ (define PATH-variable-definition
>                       "GNU")))           ;matched against '*'
>  
>                ;; git-submodule sources 'git-sh-setup.sh', but 
>                not before
> -              ;; invoking the basename and sed 
> commands... patch them to their
> -              ;; absolute location.
> +              ;; invoking the basename and sed commands... 
> Using those
> +              ;; leads to some ugly .git submodule-real, 
> hardcode instead.

The ".real" in the output is caused by the git package (which 
inherits from git-minimal) using `wrap-program' (which is what 
creates the ".real" files):

     ;; Tell 'git-submodule' where Perl is.
     (wrap-program git-sm
       `("PATH" ":" prefix
         (,(dirname (search-input-file inputs "bin/perl")))))

The git-minimal package has normal output:

   meson!ieure:~$ guix shell --pure git-minimal -- git submodule 
   -h
   usage: git submodule [--quiet] [--cached]

Since the problem is created by the git package, I think that’s 
were the fix should go.  WDYT?

Adding, the git-submodule script doesn’t call perl directly, so 
this must be due to it calling another git plumbing command which 
does -- `git-filter-branch' seems a likely suspect.  Though if 
that’s the case, git-minimal’s `git-filter-branch' is broken.  I’m 
not sure what the rationale is for doing it this way, but it might 
be worth checking if the wrapper can be eliminated altogether.

Thanks,

 -- Ian

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