get-gauche.sh: build of bleeding version needs already installed gauche?

Hi,

Does building of the bleeding version using get-gauche.sh need an
already installed gauche? (found this confusing)

jens

PS: build output:

(sid-amd64-sbuild)karme@amalthea:/tmp/get-gauche$ ./get-gauche.sh --keep-builddir --version bleeding
...
rm -f gauche/config_threads.h
echo "/* Generated automatically from gc config header; do not edit. */" > gauche/config_threads.h
/bin/bash ./genconfig
grep '^#define GC_[0-9A-Z_]*THREADS' ../gc/include/config.h >> gauche/config_threads.h || :
GAUCHE_LOAD_PATH="" GAUCHE_DYNLOAD_PATH="" "gosh" -v:0.9.15 -l./preload -I../src -I../lib -I../lib -I. `cat ./features.flags` ../lib/tools/precomp -D LIBGAUCHE_BODY libarray.scm
/bin/bash: line 1: gosh: command not found
gmake[1]: *** [Makefile:29: libarray.c] Error 127
gmake[1]: *** Waiting for unfinished jobs....
gmake[1]: Leaving directory '/tmp/get-gauche/build-20260505_085130.ihAo3ZZ2/Gauche-0.9.16_pre2+20260505/src'
gmake: *** [Makefile:48: all] Error 1