Thanks for reviewing the patch and improving it.

> We should probably also wrap the scripts to set PATH to where “grep”,
“coreutils”, “sed”, and “gawk” are found, but I wasn’t able to add (gnu
packages gawk) to the imports of (gnu packages music).

This is not the only package requiring such basic programs like "sed",
"grep" etc but not wrapped or listed in inputs. The other such package that
I am aware of is ardour, which also requires these programs. I tried
running ardour in a guix shell with --emulate-fhs, then found that ardour
could not start because these programs were not found in the PATH. So I am
not sure if it is required to add these programs to inputs or to wrap them.

> Unfortunately, the program crashes because it can’t find the LV2 files
for Synthpod itself:

I fixed it partially. The binaries are confusing. `synthpod_ui` seems like
not to be run manually. The way that I found to run the ui is
`synthpod_alsa -g` or `synthpod_jack -g`.

Strangely, with the attatched new v3 patch, the program starts only if
installed to guix profile (or maybe something else like guix home, not
tested). Just by building, the program searches for "manifest.ttl" file
in the current working directory and fails to start.


Sughosha