diff --git a/cosmo-kuroko/Dockerfile b/cosmo-kuroko/Dockerfile
new file mode 100644
index 0000000..69e31d2
--- /dev/null
+++ b/cosmo-kuroko/Dockerfile
@@ -0,0 +1,133 @@
+# MAIN: https://kuroko-lang.github.io/
+# REPO: https://github.com/kuroko-lang/kuroko
+# TODO: add /zip/ support by default and include dist modules.
+
+FROM localhost/notwa-util AS downloader
+# 1 commit after version 1.3.0:
+ARG KUROKO_COMMIT=5f4d3df5d09a1f50e99c1e4d9673af1ad56fb110
+ARG KUROKO_SHA256=ddf09ad47b61d1b3602bf59214f5c596cd6a51f5bea07542a01340e86494db1a
+
+RUN --mount=type=cache,id=common,target=/media/common,sharing=locked \
+    --mount=type=tmpfs,target=/tmp : \
+ && cd /media/common \
+ && name=kuroko \
+ && export remote_fn="$KUROKO_COMMIT.tar.gz" \
+ && export local_fn="$name-$remote_fn" \
+ && export remote_url="https://github.com/kuroko-lang/$name/archive/$remote_fn" \
+ && export dest=/$name \
+ && export sha256="$KUROKO_SHA256" \
+ && acquire \
+;
+
+FROM localhost/cosmo AS builder
+COPY --from=downloader /kuroko /kuroko
+WORKDIR /kuroko
+
+RUN : \
+ && sed -i '/bind(gamma)/{N;N;d;}' src/modules/module_math.c \
+ && sed -i '/MATH_ONE(gamma)/d' src/modules/module_math.c \
+    \
+ && sed -i 's_.*char \*\* environ.*_/* & */_' src/os.c \
+    \
+ && sed -i '/FUNC_SIG(list,append)/d' src/vm.c \
+ && sed -i '/void _callSetName/i\\extern FUNC_SIG(list,append);' src/vm.c \
+    \
+ && sed -i '/static.*cache/c\\static KrkClassCacheEntry * cache = 0;' src/vm.c \
+ && sed -i $'/define CACHE_SIZE/,/nextCount/{N;w /temp\nd}' src/vm.c \
+ && sed -i $'/void krk_initVM/{r /temp\nN}' src/vm.c \
+ && sed -i '/Reset current thread/i\\cache = calloc(CACHE_SIZE, sizeof(KrkClassCacheEntry));' src/vm.c \
+ && sed -i '/krk_freeMemoryDebugger/a\\cache = (free(cache), NULL);' src/vm.c \
+    \
+ && sed -i '/define gettid/d' src/threads.c \
+ && sed -i '/initial-exec/d' src/vm.c \
+    \
+ && sed -i $'/Ensure we don\'t have a macro/{\ni\\\
+\#ifdef KRK_DISABLE_DYNAMIC\\\n\
+KrkValue krk_module_onload_math(void);\\\n\
+KrkValue krk_module_onload_random(void);\\\n\
+KrkValue krk_module_onload_socket(void);\\\n\
+KrkValue krk_module_onload_timeit(void);\\\n\
+KrkValue krk_module_onload_wcwidth(void);\\\n\
+\#endif\\\n\
+\n\
+}' src/vm.c \
+ && sed -i $'/Ensure we don\'t have a macro/{\ni\\\
+\#define BUILTIN_MODULE(name, init) { \\\\\\\n\
+\tKrkInstance * module = (KrkInstance*)AS_OBJECT(init()); \\\\\\\n\
+\tkrk_attachNamedObject(&vm.modules, name, (KrkObj*)module); \\\\\\\n\
+\tkrk_attachNamedObject(&module->fields, "__name__", (KrkObj*)S(name)); \\\\\\\n\
+\tkrk_attachNamedValue(&module->fields, "__file__", NONE_VAL()); \\\\\\\n\
+} \\\n\
+\n\
+}' src/vm.c \
+ && sed -i $'/krk_module_init_dis/{\na\\\
+\#endif\\\n\
+\#ifdef KRK_DISABLE_DYNAMIC\\\n\
+\t\tBUILTIN_MODULE("math", krk_module_onload_math)\\\n\
+\t\tBUILTIN_MODULE("random", krk_module_onload_random)\\\n\
+\t\tBUILTIN_MODULE("socket", krk_module_onload_socket)\\\n\
+\t\tBUILTIN_MODULE("timeit", krk_module_onload_timeit)\\\n\
+\t\tBUILTIN_MODULE("wcwidth", krk_module_onload_wcwidth)\n\
+}' src/vm.c \
+ && sed -i $'/switch (afval)/{\ni\\\
+\tif (afval == AF_INET) return "AF_INET";\\\n\
+\tif (afval == AF_INET6) return "AF_INET6";\\\n\
+\tif (afval == AF_UNIX) return "AF_UNIX";\\\n\
+\tsnprintf(tmp,30,"%d",afval);\\\n\
+\treturn tmp;\n\
+}\n\
+/switch (afval)/,/}/d' src/modules/module_socket.c \
+    \
+ && sed -i $'/strlen(buf)-1/{\n\
+s/if .*/if (buf[buflen-1] == \'\\\\n\') {/\n\
+i\\\
+\t\t\t\tsize_t buflen = strlen(buf);\n\
+a\\\
+\t\t\t\t\t\\if (buflen >= 2 && buf[buflen-2] == \'\\\\r\') buf[buflen-2] = \'\\\\n\', buf[buflen-1] = \'\\\\0\';\\\n\
+\t\t\t\t} else {\n\
+}' src/kuroko.c \
+    \
+ && { diff -NrU3 /kuroko.orig/ /kuroko/ > /kuroko.patch; [ $? -le 1 ]; }
+# diff exit status is normally 0 or 1, anything greater is an error.
+
+RUN : \
+# this isn't included in the patch because it's super specific to cosmopolitan. \
+ && sed -i 's/int main/dontinline int _main/' src/kuroko.c \
+ && printf %s $'\n\
+STATIC_YOINK("__die");\n\
+int LoadZipArgs(int *, char ***);\n\
+int main(int argc, char * argv[]) {\n\
+\tShowCrashReports();\n\
+\tLoadZipArgs(&argc, &argv);\n\
+\treturn _main(argc, argv);\n\
+}\n\
+' >> src/kuroko.c
+
+RUN : \
+ && cd /cosmopolitan \
+ && . ./env \
+ && cd dist/"$flavor" \
+ && mkdir -p /kuroko/libcosmo \
+ && ln ape-copy-self.o ape.lds cosmopolitan.a crt.o ape-no-modify-self.o ape.o cosmopolitan.h \
+    /kuroko/libcosmo/
+
+COPY super.mk .
+RUN : \
+ && CC=x86_64-linux-musl-gcc \
+    make.com -f super.mk -j2 \
+    KRK_DISABLE_RLINE=1 \
+    KRK_DISABLE_DYNAMIC=1 \
+#   KRK_DISABLE_THREADS=1 \
+#   KRK_DISABLE_DEBUG=1 KRK_NO_DISASSEMBLY=1 KRK_NO_TRACING=1 \
+;
+
+RUN : \
+ && make.com -f super.mk test \
+;
+
+FROM scratch AS runner
+COPY --chmod=0755 --from=localhost/notwa-util /usr/local/bin/busybox /bin/busybox
+COPY --chmod=0755 --from=builder /cosmopolitan/bin/ape /bin/ape
+COPY --chmod=0755 --from=builder /kuroko/kuroko.com /kuroko/kuroko.com.dbg  /bin/
+COPY --from=builder /kuroko.patch /var/local/kuroko.patch
+ENTRYPOINT ["/bin/ape", "/bin/kuroko.com"]
diff --git a/cosmo-kuroko/super.mk b/cosmo-kuroko/super.mk
new file mode 100755
index 0000000..ccb1e9d
--- /dev/null
+++ b/cosmo-kuroko/super.mk
@@ -0,0 +1,102 @@
+CC ?= gcc
+CFLAGS = -Isrc -Os -fdiagnostics-color=always -fmax-errors=5
+LDFLAGS = 
+LDLIBS = 
+
+COSMO_LIBDIR = ./libcosmo
+
+COSMO_PREFLAGS = -g -static -nostdlib -nostdinc -fno-pie -no-pie -mno-red-zone
+COSMO_PREFLAGS += -fno-omit-frame-pointer -pg -mnop-mcount -mno-tls-direct-seg-refs
+COSMO_PREFLAGS += -include $(COSMO_LIBDIR)/cosmopolitan.h -Idummy
+
+COSMO_POSTFLAGS += -Wl,--gc-sections -fuse-ld=bfd -Wl,--gc-sections
+COSMO_POSTFLAGS += -Wl,-T,$(COSMO_LIBDIR)/ape.lds
+COSMO_POSTFLAGS += $(COSMO_LIBDIR)/crt.o $(COSMO_LIBDIR)/ape-no-modify-self.o $(COSMO_LIBDIR)/cosmopolitan.a
+
+COSMO_FILES = $(COSMO_LIBDIR)/ape-copy-self.o $(COSMO_LIBDIR)/ape-no-modify-self.o
+COSMO_FILES += $(COSMO_LIBDIR)/ape.lds $(COSMO_LIBDIR)/ape.o $(COSMO_LIBDIR)/crt.o
+COSMO_FILES += $(COSMO_LIBDIR)/cosmopolitan.a $(COSMO_LIBDIR)/cosmopolitan.h
+
+DUMMY_HEADERS = arpa/inet.h assert.h dirent.h dlfcn.h errno.h fcntl.h inttypes.h limits.h locale.h math.h netdb.h pthread.h sched.h signal.h stdarg.h stddef.h stdint.h stdio.h stdlib.h string.h sys/ioctl.h sys/socket.h sys/stat.h sys/syscall.h sys/time.h sys/types.h sys/utsname.h termios.h time.h unistd.h wchar.h
+DUMMY_MISSING = $(foreach header,$(DUMMY_HEADERS),$(if $(wildcard dummy/$(header)),,dummy/$(header)))
+
+TARGET   = kuroko
+OBJS     = $(patsubst %.c, %.o, $(filter-out src/kuroko.c,$(sort $(wildcard src/*.c))))
+HEADERS  = $(wildcard src/kuroko/*.h)
+GENMODS  = modules/codecs/sbencs.krk modules/codecs/dbdata.krk
+
+ifdef KRK_DISABLE_DOCS
+  CFLAGS += -DKRK_NO_DOCUMENTATION -Wno-unused-value
+endif
+
+ifndef KRK_DISABLE_RLINE
+  BIN_OBJS += src/vendor/rline.o
+else
+  CFLAGS  += -DNO_RLINE
+endif
+
+ifdef KRK_DISABLE_DEBUG
+  CFLAGS  += -DKRK_DISABLE_DEBUG
+endif
+
+ifdef KRK_DISABLE_DYNAMIC
+  BIN_OBJS += src/modules/module_math.o src/modules/module_random.o src/modules/module_socket.o src/modules/module_timeit.o src/modules/module_wcwidth.o
+  CFLAGS += -DKRK_DISABLE_DYNAMIC -DSTATIC_ONLY
+endif
+
+ifdef KRK_DISABLE_THREADS
+  CFLAGS += -DKRK_DISABLE_THREADS
+else
+  CFLAGS += -DKRK_MEDIOCRE_TLS
+endif
+
+ifdef KRK_NO_DISASSEMBLY
+  CFLAGS += -DKRK_NO_DISASSEMBLY=1
+endif
+
+ifdef KRK_NO_TRACING
+  CFLAGS += -DKRK_NO_TRACING=1
+endif
+
+ifdef KRK_NO_STRESS_GC
+  CFLAGS += -DKRK_NO_STRESS_GC=1
+endif
+
+HEADERS += $(COSMO_LIBDIR)/cosmopolitan.h
+BIN_OBJS += $(OBJS)
+
+all: $(TARGET).com $(GENMODS)
+
+dummy/%.h:
+	mkdir -p dummy && touch $@
+
+dummy/arpa/%.h:
+	mkdir -p dummy/arpa && touch $@
+
+dummy/sys/%.h:
+	mkdir -p dummy/sys && touch $@
+
+%.o: %.c $(HEADERS) $(DUMMY_MISSING)
+	$(CC) $(CFLAGS) $(COSMO_PREFLAGS) -c -o $@ $<
+
+$(TARGET).com.dbg: src/$(TARGET).c $(BIN_OBJS) $(HEADERS) $(DUMMY_MISSING)
+	$(CC) $(CFLAGS) $(LDFLAGS) $(COSMO_PREFLAGS) -o $@ $< $(BIN_OBJS) $(LDLIBS) $(COSMO_POSTFLAGS)
+
+$(TARGET).com: $(TARGET).com.dbg
+	objcopy -S -O binary $< $@
+
+.PHONY: test
+test:
+	@for i in test/*.krk; do echo $$i; KUROKO_TEST_ENV=1 $(TESTWRAPPER) ./$(TARGET).com.dbg $$i > $$i.actual; diff $$i.expect $$i.actual || exit 1; rm $$i.actual; done
+
+.PHONY: clean
+clean:
+	-rm -f $(OBJS) $(TARGET).com $(TARGET).com.dbg src/*.o src/vendor/*.o
+
+# special cases:
+
+modules/codecs/sbencs.krk: tools/codectools/gen_sbencs.krk tools/codectools/encodings.json tools/codectools/indexes.json | $(TARGET).com.dbg
+	./$(TARGET).com.dbg tools/codectools/gen_sbencs.krk
+
+modules/codecs/dbdata.krk: tools/codectools/gen_dbdata.krk tools/codectools/encodings.json tools/codectools/indexes.json | $(TARGET).com.dbg
+	./$(TARGET).com.dbg tools/codectools/gen_dbdata.krk