Re: string-append plus package

[Hartmut Goebel <h.goebel@crazy-compilers.com>]

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Am 19.12.2016 um 10:47 schrieb Ludovic Courtès:
> The result of ‘file-append’ is not a string, but ‘string-append’ expects
> two strings, hence the error.
>
> ‘file-append’ returns a “string-valued gexp”.  This is to say that, in a
> staging context, it will produce a string.  For example:
>
>   (scheme-file "foo" #~(foo bar #$(file-append nginx "/foo/bar")))
>
> leads to a file “foo” containing:
>
>   (foo bar "/gnu/store/…-nginx-1.2.3/foo/bar")

Thanks for the explanation (which to be frank would take me some time to
understand).

Please reread you answer from the point of view of an administrator or
somebody else who is not a Scheme programmer. Somebody who just wants to
get some system up an running. He would answer like this:

    Parton? What? "string-valued gexp", "staging context"? I do not
    care. I simply want to get the path to a file within a package.

Whatever you write above may be correct and may be understandable for
every Scheme programmer. But this is discouraging for everybody who does
not want to become a Scheme expert for administering his/her systems.

I already wasted about an hour just to try to get this path! This is crap!

-- 
Regards
Hartmut Goebel

| Hartmut Goebel          | h.goebel@crazy-compilers.com               |
| www.crazy-compilers.com | compilers which you thought are impossible |


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