From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alex Vong <alexvong1995@gmail.com>
Subject: Re: weird errors
Date: Mon, 15 Jan 2018 13:43:50 +0800
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In-Reply-To: <20180114174509.3428f435@scratchpost.org> (Danny Milosavljevic's
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To: Danny Milosavljevic <dannym@scratchpost.org>
Cc: guix-devel <guix-devel@gnu.org>

Hello Catonano,

Danny Milosavljevic <dannym@scratchpost.org> writes:

>> So were the spaces the only problem ?
>
> In
> https://gitlab.com/humanitiesNerd/guix-hacks/blob/trytonservice/gnu/services/trytond.scm
> , you don't invoke a shell (example: "sh", "bash", "csh" etc) so the
> "VARIABLE=VALUE" syntax will not be evaluated by the shell and the
> kernel will try to start a program called "VARIABLE=VALUE" instead.
>
> So either (invoke "sh" "-c" "VARIABLE=VALUE trytond-admin ...") or
> just use setenv and then invoke trytond-admin directly.

Actually, there is one more way. You can run (I didn't test)

  (invoke "env" "VAR1=VAL1" ... "VARn=VALn" "trytond-admin" "ARG1" ... "ARGn")

But personally I prefer the 'setenv' approach, it looks more schemish to
me.

In fact, I think we should have a 'with-environment-variables' macro
which run the body with the appropriate environment variables set and
restore them after we finish, similar to how 'with-directory-excursion'
works.

Cheers,
Alex