[bug#74405] [bug#74406] [PATCH 1/1] gnu: antlr4: Pass full path to java in bin executable

[Maxim Cournoyer <maxim.cournoyer@gmail.com>]

Hi Rutherther,

Apologies for the delay, this had been tagged as SPAM by big G.

Rutherther <rutherther@ditigal.xyz> writes:

> The executable outputted by antlr4 package does not
> refer to full path of java, but to standalone "java".
> That means the package expects java to be in PATH.
> Since it's an application, requiring java to run,
> it should rather refer to full path of java executable
> it was built with/for.
>
> * gnu/packages/java.scm: (antrl4)[arguments]: Change "java" in bin/antlr4 for full path
>
> Change-Id: I311b9ec54a90fc7251eb8fcb62b232e843853e64
> ---
>  gnu/packages/java.scm | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/gnu/packages/java.scm b/gnu/packages/java.scm
> index df57385ea7..8607b62bea 100644
> --- a/gnu/packages/java.scm
> +++ b/gnu/packages/java.scm
> @@ -8866,13 +8866,14 @@ (define-public antlr4
>           (add-after 'install 'bin-install
>             (lambda* (#:key inputs outputs #:allow-other-keys)
>               (let ((jar (string-append (assoc-ref outputs "out") "/share/java"))
> -                   (bin (string-append (assoc-ref outputs "out") "/bin")))
> +                   (bin (string-append (assoc-ref outputs "out") "/bin"))
> +                   (java (search-input-file inputs "bin/java")))
>                 (mkdir-p bin)
>                 (with-output-to-file (string-append bin "/antlr4")
>                   (lambda _
>                     (display
>                       (string-append "#!" (which "sh") "\n"
> -                                    "java -cp " jar "/antlr4.jar:"
> +                                    java " -cp " jar "/antlr4.jar:"

Hm.  I'm not sure what is the state of the art here for our Java
packages; it makes sense that it should work out of the box, but perhaps
there's a reason to want to have it run with any Java available on PATH?

I'll defer to Julien, which I believe has done more work with Java in
Guix.

-- 
Thanks,
Maxim