Hehe, thanks for your interest in guix-android. It's not really done yet, but I'm very motivated :). It always feels weird when someone on the internet calls you Mr ^^. No need to be so stiff, you can call me "Julien" (and I suppose it's the norm to call people by their first name in this kind of internet community).

Maybe try to run aegisub with strace -f, you might find out something. You may have to take a look at alsa's sources to find out how it looks for its plugins exactly (maybe try to grep for PLUGIN or PLUGINDIR)?

Le 26 septembre 2020 08:07:34 GMT-04:00, Prafulla Giri <pratheblackdiamond@gmail.com> a écrit :
>Okay, I think I'm stuck now. lol
>
>
>
>On Sat, Sep 26, 2020 at 3:42 PM Prafulla Giri
><pratheblackdiamond@gmail.com>
>wrote:
>
>> Hello Mr. Lepiller,
>>
>> Thank you for the tip. For the moment, I want to poke around this
>issue.
>> Perhaps I get absolutely tired of it (or find a good hack - and an
>ugly
>> patch). I did manage to learn a bit more about union-builds in
>general. So,
>> that's a silver lining.
>>
>> Also, your work on guix-android seems so very cool! Please keep up
>the
>> great work!
>>
>> On Sat, Sep 26, 2020 at 3:28 PM Julien Lepiller <julien@lepiller.eu>
>> wrote:
>>
>>>
>>>
>>> Hi Prafulla,
>>>
>>> Le 26 septembre 2020 03:31:38 GMT-04:00, Prafulla Giri <
>>> pratheblackdiamond@gmail.com> a écrit :
>>> >Another information:
>>> >
>>> >I have other programs on my foreign system (installed via guix)
>that
>>> >produce sound well, without any issues. They include:
>>> >espeak and kdenlive.
>>> >
>>> >Also, I did try making the union-build use copies instead of
>symlinks
>>> >using
>>> >(union-build ... #:symlink copy-recursively) but that didn't work
>out
>>> >either.
>>> >
>>> >Now, I'm going to take a look at fixing the pkg-config rules, and
>will
>>> >be
>>> >updating this thread should that resolve this issue.
>>> >
>>> >On Sat, Sep 26, 2020 at 12:21 PM Prafulla Giri
>>> ><pratheblackdiamond@gmail.com>
>>> >wrote:
>>> >
>>> >> I forgot to mention, but the union-build works. If one `guix
>build`s
>>> >the
>>> >> union package, and cd into the /gnu/store/...-union-build, one
>will
>>> >see
>>> >> that things are there as it should be (lib/normal-alsa-*.so and
>>> >> lib/alsa-lib/*pulse*.so).
>>> >>
>>> >> It's just that aegisub seems to be looking from the
>>> >> /gnu/store/normal-alsa-lib-dir instead of
>>> >/gnu/store/union-alsa-package.
>>> >>
>>>
>>> I think the issue with the union-build is that it is completely
>ignored:
>>> alsa doesn't look in it's current directory for plugins, but in the
>>> directory where it's been configured (at build time) to look for.
>>>
>>> On the Guix System, there is a service that creates a
>/etc/asound.conf,
>>> which references alsa-plugins:pulseaudio. Maybe you actually want to
>>> configure that? Maybe try to copy this to a new file .asoundrc:
>>>
>>> pcm_type.pule {
>>>   lib
>"/home/foo/.guix-profile/lib/alsa-lib/libasound_module_pcm_pulse.so"
>>> }
>>>
>>> ctl_type.pulse {
>>>  
>lib"/home/foo/.guix-profile/lib/alsa-lib/libasound_module_ctl_pulse.so"
>>> }
>>>
>>> pcm.!default {
>>>   type pulse
>>> }
>>>
>>> ctl.!default {
>>>   type pulse
>>> }
>>>
>>