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Re: wrap-program –> wrap-script

From: Efraim Flashner
Subject: Re: wrap-program –> wrap-script
Date: Tue, 17 Dec 2019 12:57:52 +0200
User-agent: Mutt/1.12.2 (2019-09-21)

On Wed, Dec 11, 2019 at 04:57:41PM +0100, Ricardo Wurmus wrote:
> Hi Guix,
> I’ve just pushed a change to use wrap-script in one package.  The
> purpose of wrap-script is to wrap an executable without having to create
> a separate wrapper shell script.  It does this by prepending a Guile
> script to the top of the file, which sets the environment variables and
> then re-executes itself with the target interpreter (e.g. Python).
> I noticed two things:
> 1) wrap-script does not automatically pull in Guile as a dependency, so
> if Guile isn’t among the inputs it will create a bad shebang.  This
> should be fixed on core-updates.

I thought the build systems had an implicit guile in them. Looks like I
had that exactly backwards.

> 2) we aren’t using wrap-script anywhere.  I think a good use case would
> be the Python build system’s “wrap” phase where we currently use
> wrap-program.  Most of the time we’d be dealing with Python scripts, so
> using wrap-script would be more appropriate here.

It turns out we are using it in vpnc-scripts.

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