Hello!
Yes, only changes in the environment.scm files are required for fixing the
issue.
Why did you make the patch so complex?
> --- a/guix/scripts/environment.scm
> +++ b/guix/scripts/environment.scm
> @@ -464,8 +464,15 @@ (define (setup-fhs profile)
> ;; /bin since that already has the sh symlink and the other (optional) FHS
> ;; bin directories will link to /bin.
> (let ((gcc-path (string-append profile "/bin/gcc")))
> - (if (file-exists? gcc-path)
> - (symlink gcc-path "/bin/cc")))
> + (when (file-exists? gcc-path)
> + (catch 'system-error
> + (lambda ()
> + (symlink gcc-path "/bin/cc"))
> + (lambda args
> + ;; If /bin/cc already exists because it was provided by another
> + ;; package in PROFILE, such as 'clang-toolchain', leave it.
> + (unless (= EEXIST (system-error-errno args))
> + (apply throw args))))))
>
> ;; Guix's ldconfig doesn't search in FHS default locations, so provide a
> ;; minimal ld.so.conf.
was not enough ?
diff --git a/guix/scripts/environment.scm b/guix/scripts/environment.scm
index a219b2ac89..37f11395f9 100644
--- a/guix/scripts/environment.scm
+++ b/guix/scripts/environment.scm
@@ -464,7 +464,8 @@ (define (setup-fhs profile)
;; /bin since that already has the sh symlink and the other (optional) FHS
;; bin directories will link to /bin.
(let ((gcc-path (string-append profile "/bin/gcc")))
- (if (file-exists? gcc-path)
+ (if (and (file-exists? gcc-path)
+ (not (file-exists? "/bin/cc")))
(symlink gcc-path "/bin/cc")))
;; Guix's ldconfig doesn't search in FHS default locations, so provide a
________________________________
Da: Ludovic Courtès <l...@gnu.org>
Inviato: mercoledì 23 ottobre 2024 22:26
A: Marco Fortina <marco_fort...@hotmail.it>
Cc: guix-devel@gnu.org <guix-devel@gnu.org>
Oggetto: Re: guix shell: error: symlink: File exists: "/bin/cc"
Hi,
Marco Fortina <marco_fort...@hotmail.it> skribis:
> I have this issue when with guix time-machine shell when using --emulate-fhs
> option and having gcc-toolset and clang-toolset in my manifest.scm.
I tried, and for those reading along, the problem is:
--8<---------------cut here---------------start------------->8---
$ guix shell -CF gcc-toolchain clang-toolchain
guix shell: error: symlink: File exists: "/bin/cc"
--8<---------------cut here---------------end--------------->8---
> --- a/gnu/packages/llvm.scm
> +++ b/gnu/packages/llvm.scm
> @@ -512,8 +512,10 @@ (define-public (make-clang-toolchain clang libomp)
> ;; Create 'cc' and 'c++' so that one can use it as a
> ;; drop-in replacement for the default tool chain and
> ;; have configure scripts find the compiler.
> - (symlink "clang" (string-append out "/bin/cc"))
> - (symlink "clang++" (string-append out "/bin/c++"))
> + (unless (file-exists? "/bin/cc")
> + (symlink "clang" (string-append out "/bin/cc")))
> + (unless (file-exists? "/bin/c++")
> + (symlink "clang++" (string-append out "/bin/c++")))
This part has no effect (there’s no /bin/cc in the build environment.)
> +++ b/guix/scripts/environment.scm
> @@ -465,7 +465,8 @@ (define* (link-contents dir #:key (exclude '()))
> ;; bin directories will link to /bin.
> (let ((gcc-path (string-append profile "/bin/gcc")))
> (if (file-exists? gcc-path)
> - (symlink gcc-path "/bin/cc")))
> + (unless (file-exists? "/bin/cc")
> + (symlink gcc-path "/bin/cc"))))
Good catch! I’m proposing a slightly modified variant of this change:
