Specify patches for packages with local source

Specify patches for packages with local source

[Mekeor Melire]

Is it possible to specify patches for packages with local source?

The `local-file` declaration doesn't allow a `patches` declaration.
Therefore, I'm guessing I'd have to use `origin`. But I'm not sure
whether either (method git-fetch) or (method url-fetch) allow to specify
a local path?

The manual states:

    URL-FETCH from ‘(guix download)’
         download a file from the HTTP, HTTPS, or FTP URL
         specified in the ‘uri’ field;

But is "file://" also supported? Can I write something as follows?

    (define-public own-st
        (package
            (inherit st)
            (source
                (origin
                    (method url-fetch)
                    (uri        "/path/to/st") ; like this ← ?
                   ;(uri "file:///path/to/st") ; or like this ← ?
                   (patches …)))))

Re: Specify patches for packages with local source

[Efraim Flashner]

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On Thu, Jun 29, 2017 at 11:00:18PM +0200, Mekeor Melire wrote:
> Is it possible to specify patches for packages with local source?
> 
> The `local-file` declaration doesn't allow a `patches` declaration.
> Therefore, I'm guessing I'd have to use `origin`. But I'm not sure
> whether either (method git-fetch) or (method url-fetch) allow to specify
> a local path?
> 
> The manual states:
> 
>     URL-FETCH from ‘(guix download)’
>          download a file from the HTTP, HTTPS, or FTP URL
>          specified in the ‘uri’ field;
> 
> But is "file://" also supported? Can I write something as follows?
> 
>     (define-public own-st
>         (package
>             (inherit st)
>             (source
>                 (origin
>                     (method url-fetch)
>                     (uri        "/path/to/st") ; like this ← ?
>                    ;(uri "file:///path/to/st") ; or like this ← ?
>                    (patches …)))))
> 

I used to have a package with a patch. From my main GUIX_PACKAGE_PATH I
had the patch toplevel, although I suppose it shouldn't matter. To the
package module I added and import of (gnu packages) and for the patches
field I had the standard (patches (search-patches "my-patch.patch"))

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Re: Specify patches for packages with local source

[Ludovic Courtès]

Hi,

Mekeor Melire <mekeor.melire@gmail.com> skribis:

> Is it possible to specify patches for packages with local source?
>
> The `local-file` declaration doesn't allow a `patches` declaration.

Indeed, that’s annoying.

I would suggest maybe using ‘computed-file’ in conjunction with
‘local-file’ to apply the patch, but that means duplicating the patching
logic of origins, which is inconvenient.

> Therefore, I'm guessing I'd have to use `origin`. But I'm not sure
> whether either (method git-fetch) or (method url-fetch) allow to specify
> a local path?
>
> The manual states:
>
>     URL-FETCH from ‘(guix download)’
>          download a file from the HTTP, HTTPS, or FTP URL
>          specified in the ‘uri’ field;
>
> But is "file://" also supported? Can I write something as follows?
>
>     (define-public own-st
>         (package
>             (inherit st)
>             (source
>                 (origin
>                     (method url-fetch)
>                     (uri        "/path/to/st") ; like this ← ?
>                    ;(uri "file:///path/to/st") ; or like this ← ?
>                    (patches …)))))

I think so.  The problem is that you wouldn’t want to write an absolute
file name here, so it’s not convenient.

Ludo’.