[bug#29678] [PATCH] gnu: qemu: Add pulseaudio support.

[Oleg Pykhalov]

>>>>> "Marius" == Marius Bakke <address@hidden> writes:

    > I see pulseaudio is already in Qemus closure, I used `guix size
    > qemu | grep pulseaudio`.  However "qemu-minimal" does not include
    > pulseaudio, which increases the size by about 25%.  Can you drop
    > the input from qemu-minimal at the same time?

For some unknown to me reason, “qemu-minimal” closure doesn't contain
“pulseaudio” according to my investigation:
--8<---------------cut here---------------start------------->8---
$ ./pre-inst-env guix size qemu-minimal
store item                                                       total    self
/gnu/store/30sahk57a45xx205n7mmv3xcpch51g08-qemu-minimal-2.10.2    185.3    
66.6  35.9%
/gnu/store/n6nvxlk2j8ysffjh3jphn1k5silnakh6-glibc-2.25              38.5    
37.1  20.0%
/gnu/store/3x53yv4v144c9xp02rs64z7j597kkqax-gcc-5.4.0-lib           68.6    
30.1  16.2%
/gnu/store/azbfh3i72lbaqvhgg5m7p6ymmqq0ii6q-glib-2.52.3            111.9    
13.8   7.5%
/gnu/store/zbywrj6klakskj0sppq56viqh9l56jl0-util-linux-2.30.1       87.7    
12.1   6.5%
/gnu/store/09j7scnl3hahcmql986fsjpzj6gqsmzv-ncurses-6.0             74.3     
5.7   3.1%
/gnu/store/b7y66db86k57vbb03nr4bfn9svmks4gf-bash-4.4.12             81.0     
5.4   2.9%
/gnu/store/an52j0jrvd23qypbidd5f20k2wi75vh9-pcre-8.40               72.1     
3.4   1.9%
/gnu/store/2p1ljs69x19v11r0rgqh7k3v6ggfqizq-libjpeg-turbo-1.5.3     72.0     
3.4   1.8%
/gnu/store/w8kii3hjvmh50yxs52gkdywkq9jc7s19-pixman-0.34.0           70.2     
1.6   0.9%
/gnu/store/zhrajv6qf2hzn9c3g2bb07559hyrz5xp-bash-static-4.4.12       1.4     
1.4   0.8%
/gnu/store/mipizipnr4y2hly9b429j8id1albbgqi-readline-7.0            75.6     
1.3   0.7%
/gnu/store/kpxi8h3669afr9r1bgvaf9ij3y4wdyyn-bash-minimal-4.4.12     39.5     
1.0   0.5%
/gnu/store/vdqy6r4g7357nsjjh4d1gfqj9hhw1vk8-libseccomp-2.3.2        69.5     
0.8   0.5%
/gnu/store/b9ww6qv1ii9v6n45kin7543vkf6jfnd3-libpng-1.6.29           70.8     
0.8   0.4%
/gnu/store/sfx1wh27i6gsrk21p87rdyikc64v7d51-zlib-1.2.11             69.0     
0.4   0.2%
/gnu/store/jnbb8ffxxvrw2b4z18zn0g08kqk9rsgl-libffi-3.2.1            68.8     
0.1   0.1%
/gnu/store/hxn2viwl04nwswpjkfg0iyyhm815yaza-libcap-2.25             68.8     
0.1   0.1%
/gnu/store/fq4zk6aqrgim67aiqri37vbbk4gdkfny-libaio-0.3.110           0.0     
0.0   0.0%
total: 185.3 MiB
--8<---------------cut here---------------end--------------->8---

I could assume because “(package-arguments qemu-minimal)” shows a
totally different “#:configure-flags” than “(package-arguments qemu)”.
Particularly doesn't contain “--audio-drv-list=alsa,pa,sdl”.

    > Unfortunately we might have to override #:configure-flags as well.

No (see above).

    >> + (string-append "--audio-drv-list="
    >> +                (string-join (list "alsa" "pa" "sdl") ",")))

    > Nit-pick: I don't really see the benefit of using string-join
    > here.

Agree.

    > But no strong opinion.  However: use '() instead of (list
    > ...) when the elements do not need to be evaluated.

Thanks, I will use a quote.

Oleg.

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