audio/audacity -> audio/sratom

I cannot build audacity because sratom fails:

...
[ 44% 5/9] /usr/local/bin/doxygen doc/c/xml/Doxyfile
[ 55% 6/9] 
/usr/ports/work/usr/ports/audio/sratom/work/sratom-0.6.14/doc/../scripts/dox_to_sphinx.py 
-f doc/c/xml/index.xml doc/c/api
FAILED: doc/c/api/sratom.rst
/usr/ports/work/usr/ports/audio/sratom/work/sratom-0.6.14/doc/../scripts/dox_to_sphinx.py 
-f doc/c/xml/index.xml doc/c/api
env: python3: No such file or directory
[ 66% 6/9] cc -Itest/test_sratom.p -Itest -I../test -I../src 
-I../include -I/usr/local/include -I/usr/local/include/serd-0 
-I/usr/local/include/sord-0 -fno-color-diagnostics -DNDEBUG 
-D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -std=c99 -O3 -O2 -pipe 
-fstack-protector-strong -fno-strict-aliasing -std=c99 -Wno-cast-align 
-Wno-cast-qual -Wno-declaration-after-statement 
-Wno-documentation-unknown-command -Wno-double-promotion 
-Wno-float-conversion -Wno-implicit-float-conversion 
-Wno-implicit-int-conversion -Wno-nullability-extension 
-Wno-nullable-to-nonnull-conversion -Wno-padded -Wno-shorten-64-to-32 
-Wno-sign-conversion -MD -MQ test/test_sratom.p/test_sratom.c.o -MF 
test/test_sratom.p/test_sratom.c.o.d -o 
test/test_sratom.p/test_sratom.c.o -c ../test/test_sratom.c
ninja: build stopped: subcommand failed.
===> Compilation failed unexpectedly.

Any clues?

-andyf