[bug#49539] [PATCH] gnu: Add nginx-rtmp-module.

[Jack Hill <jackhill@jackhill.us>]

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On Wed, 21 Jul 2021, Sarah Morgensen wrote:

> Jack Hill <jackhill@jackhill.us> writes:
>
>> +       ((#:phases phases)
>> +        `(modify-phases ,phases
>> +           ;; The LICENSE file will be overwritten with the one from nginx
>> +           ;; when unpacking the nginx source, so copy this one to its own
>> +           ;; file.
>> +           (add-after 'unpack 'preserve-license-file
>> +             (lambda _ (copy-file "LICENSE" "LICENSE.rtmp")))
>> +           (add-after 'preserve-license-file 'unpack-nginx-sources
>> +             (lambda* (#:key inputs native-inputs #:allow-other-keys)
>> +               (begin
>> +                 ;; The nginx source code is part of the module’s source.
>> +                 (format #t "decompressing nginx source code~%")
>> +                 (let ((tar (assoc-ref inputs "tar"))
>> +                       (nginx-srcs (assoc-ref inputs "nginx-sources")))
>> +                   (invoke (string-append tar "/bin/tar")
>> +                           "xvf" nginx-srcs "--strip-components=1"))
>
> You can probably drop the direct reference to tar and just use `(invoke
> "tar" ...)`
>
> Also, if you want to avoid the extra step of renaming the original
> LICENSE, you can use `--transform=s,/LICENSE$,/LICENSE.nginx,` as an
> argument to tar.

Thanks for suggesting these improvements! I've incorporated them into a 
version 3 that I'll post shortly.

Best,
Jack

P.S. The same opportunities for improvement exists in some of our other 
nginx modules, from which I copied this phase. The next time we update 
those might be a good time to clean them up.