Hi. I wanted to make a screencast about GuixSD, but recordmydesktop
couldn't record sound. Launching it without parameters gives

Error while opening/configuring soundcard /dev/dsp

Manual page says I could specify sound device

--device SOUND_DEVICE
                  Sound  device(default  hw:0,0  or  /dev/dsp,  depending
on
              whether ALSA or OSS is used).

I've tried both, hw:0,0 and /dev/dsp, none worked.

Meanwhile, I've tried to record my microphone with audacity and succeded,
no configuration requred. By default audacity records from ALSA hw:0,0.

What should I do? Can I solve this issue with JACK, or it wouldn't help
either? Shouldn't recordmydesktop package be recompiled with ALSA support?
I thought it already has it. recordmydesktop is compilled with

(build-system gnu-build-system)

with no options, everything is default.

http://git.savannah.gnu.org/cgit/guix.git/tree/gnu/packages/video.scm#n1509

recordmydesktop-0.3.8.1/configure --help has a list of otional features

Optional Features:
  --disable-option-checking  ignore unrecognized --enable/--with options
  --disable-FEATURE       do not include FEATURE (same as
--enable-FEATURE=no)
  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
  --disable-dependency-tracking  speeds up one-time build
  --enable-dependency-tracking   do not reject slow dependency extractors
  --enable-oss=yes    compile with OSS(don't check for ALSA)
  --enable-jack=yes    compile with Jack support

As I can see ALSA is a default option. Why doesn't recordmydesktop in
GuixSD doesn't work with my microphone like audacity does?

Dmitry Nikolaev