On 29 June 2017 at 17:44, Ludovic Courtès <l...@gnu.org> wrote:
> Hi Dmitry,
>
> Dmitry Nikolaev <camelthe...@gmail.com> skribis:
>
> > I want to apply Reiser4 patch for my Linux
> >
> > https://reiser4.wiki.kernel.org/index.php/Main_Page
> > https://sourceforge.net/projects/reiser4/files/
> reiser4-for-linux-4.x/reiser4-for-4.11.0.patch.gz
> >
> > But all code examples in guix repository use code like this
> >
> > (patches (search-patches "somepackage-CVE-fix.patch"))
> >
> > which uses patches from /gnu/packages/aux-files
> >
> > What code should I write in package definition to download file, unzip it
> > and apply patch?
>
> You can do:
>
> (patches (list (origin
> (method url-fetch)
> (uri …)
> (sha256 …))))
>
> There are a few instances of this pattern I think.
>
> I think it won’t handle gzip though. So perhaps you need something like
> this (untested):
>
> (patches (list (computed-file "reiser4.patch"
> (let ((compressed (origin …)))
> #~(system
> (string-append #+(file-append gzip
> "/bin/gunzip")
> " < " #$compressed
> " > " #$output))))))
>
> Note that you need the (guix gexp) module for this to work.
>
Thanks Ludo. It helps. Here is final code.
(patches (list (computed-file "reiser4-for-4.11.0.patch"
(let ((compressed (origin
(method url-fetch)
(uri "
https://downloads.sourceforge.net/project/reiser4/reiser4-for-linux-4.x/reiser4-for-4.11.0.patch.gz
")
(sha256 (base32 "1qc421bqassrxv7z5pzsnwsf9d5pz0azm96rykxh02xlrf8ig3hc")))))
#~(system
(string-append
#+(file-append gzip "/bin/gunzip")
" < "
#$compressed
" > "
#$output))))))))
I know I should reuse "reiser4-for-4.11.0.patch" as variable, but I still
lack Lisp knowledge.
Camel
