From: Raghav Gururajan <rg@raghavgururajan.name>
To: Ricardo Wurmus <rekado@elephly.net>
Cc: Julien Lepiller <julien@lepiller.eu>, help-guix@gnu.org
Subject: Re: Custom 'install phase
Date: Tue, 9 Mar 2021 03:25:51 -0500 [thread overview]
Message-ID: <d8417f6e-e4de-b18e-dcf3-48e8bccdee69@raghavgururajan.name> (raw)
In-Reply-To: <87h7lksq17.fsf@elephly.net>
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Hi Ricardo!
> As Julien wrote this is expected as you have an expression that starts
> with a string:
>
> ("hello" whatever)
>
> This will try to apply the string "hello" to the argument “whatever”. I
> don’t know how to apply a string to anything, and neither does Scheme.
>
> I would go with quasiquotation:
>
> --8<---------------cut here---------------start------------->8---
> (with-directory-excursion solution
> ((assoc-ref copy:%standard-phases 'install)
> #:install-plan
> `(("src" ,(string-append "include/" solution)
> #:include-regexp ("\\.h$")))))
> --8<---------------cut here---------------end--------------->8---
>
> The expression following #:install-plan is quoted (so it’s inert data),
> and we temporarily unquote to evaluate the “string-append” expression;
> then we go straight back to “data mode”, so we don’t have to explicitly
> quote “("\\.h$")”.
It worked. Thanks so much!
Regards,
RG.
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prev parent reply other threads:[~2021-03-09 8:26 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-07 19:06 Custom 'install phase Raghav Gururajan
2021-03-07 21:44 ` Julien Lepiller
2021-03-08 8:16 ` Raghav Gururajan
2021-03-08 9:26 ` Ricardo Wurmus
2021-03-08 9:35 ` Raghav Gururajan
2021-03-08 11:45 ` Julien Lepiller
2021-03-09 1:09 ` Raghav Gururajan
2021-03-09 2:37 ` Julien Lepiller
2021-03-09 3:28 ` Raghav Gururajan
2021-03-09 3:47 ` Raghav Gururajan
2021-03-09 8:13 ` Ricardo Wurmus
2021-03-09 8:25 ` Raghav Gururajan [this message]
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