diff --git a/internal/rosa/gnu.go b/internal/rosa/gnu.go
index 8104dba..bd00d8f 100644
--- a/internal/rosa/gnu.go
+++ b/internal/rosa/gnu.go
@@ -31,6 +31,7 @@ func (t Toolchain) newM4() pkg.Artifact {
 	)
 	return t.New("m4-"+version, false, []pkg.Artifact{
 		t.Load(Make),
+		t.Load(Coreutils),
 	}, nil, nil, `
 cd /usr/src/m4
 chmod +w tests/test-c32ispunct.sh && echo '#!/bin/sh' > tests/test-c32ispunct.sh
@@ -84,6 +85,7 @@ func (t Toolchain) newAutoconf() pkg.Artifact {
 		t.Load(M4),
 		t.Load(Perl),
 		t.Load(Bash),
+		t.Load(Coreutils),
 	}, nil, nil, `
 cd "$(mktemp -d)"
 /usr/src/autoconf/configure \
@@ -133,6 +135,9 @@ func (t Toolchain) newGettext() pkg.Artifact {
 	)
 	return t.New("gettext-"+version, false, []pkg.Artifact{
 		t.Load(Make),
+		t.Load(Coreutils),
+		t.Load(Gzip),
+		t.Load(Sed),
 	}, nil, nil, `
 cd /usr/src/gettext
 test_disable() { chmod +w "$2" && echo "$1" > "$2"; }
@@ -147,6 +152,8 @@ test_disable '#!/bin/sh' gettext-tools/tests/format-c-5
 test_disable '#!/bin/sh' gettext-tools/gnulib-tests/test-c32ispunct.sh
 test_disable 'int main(){return 0;}' gettext-tools/gnulib-tests/test-stdcountof-h.c
 
+touch gettext-tools/misc/archive.dir.tar
+
 cd "$(mktemp -d)"
 /usr/src/gettext/configure \
 	--prefix=/system \
@@ -175,6 +182,7 @@ test_disable() { chmod +w "$2" && echo "$1" > "$2"; }
 
 test_disable '#!/bin/sh' gnulib-tests/test-c32ispunct.sh
 test_disable 'int main(){return 0;}' gnulib-tests/test-c32ispunct.c
+test_disable '#!/bin/sh' tests/cmp
 
 cd "$(mktemp -d)"
 /usr/src/diffutils/configure \
@@ -315,7 +323,7 @@ cd "$(mktemp -d)"
 	--build="${ROSA_TRIPLE}"
 make "-j$(nproc)"
 make DESTDIR=/work install
-`, pkg.Path(AbsUsrSrc.Append("gawk"), true, pkg.NewHTTPGetTar(
+`, pkg.Path(AbsUsrSrc.Append("gawk"), false, pkg.NewHTTPGetTar(
 		nil, "https://ftp.gnu.org/gnu/gawk/gawk-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
@@ -333,9 +341,9 @@ func (t Toolchain) newFindutils() pkg.Artifact {
 		t.Load(XZ),
 		t.Load(Sed),
 	}, nil, nil, `
-cd /usr/src
-xzcat findutils.tar.xz | tar -x
-mv 'findutils-`+version+`' findutils
+cd /usr/src/
+tar xf findutils.tar.xz
+mv findutils-`+version+` findutils
 
 cd findutils
 echo '#!/bin/sh' > gnulib-tests/test-c32ispunct.sh
diff --git a/internal/rosa/go.go b/internal/rosa/go.go
index 9b315ad..e0dc219 100644
--- a/internal/rosa/go.go
+++ b/internal/rosa/go.go
@@ -20,7 +20,7 @@ cp -r /usr/src/go /work
 cd /work/go/src
 chmod -R +w ..
 
-ln -s ../system/bin/busybox /bin/pwd
+ln -s ../system/bin/toybox /bin/pwd
 cat << EOF > /bin/hostname
 #!/bin/sh
 echo cure
diff --git a/internal/rosa/hakurei.go b/internal/rosa/hakurei.go
index 1ee2d0f..0372d5d 100644
--- a/internal/rosa/hakurei.go
+++ b/internal/rosa/hakurei.go
@@ -11,6 +11,8 @@ func (t Toolchain) newHakurei(script string) pkg.Artifact {
 	)
 	return t.New("hakurei-"+version, false, []pkg.Artifact{
 		t.Load(Go),
+
+		t.Load(Gzip),
 		t.Load(PkgConfig),
 
 		t.Load(KernelHeaders),
diff --git a/internal/rosa/libseccomp.go b/internal/rosa/libseccomp.go
index aae5626..9158fca 100644
--- a/internal/rosa/libseccomp.go
+++ b/internal/rosa/libseccomp.go
@@ -12,6 +12,7 @@ func (t Toolchain) newLibseccomp() pkg.Artifact {
 	return t.New("libseccomp-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 		t.Load(Bash),
+		t.Load(Coreutils),
 		t.Load(Gperf),
 
 		t.Load(KernelHeaders),
diff --git a/internal/rosa/libxml2.go b/internal/rosa/libxml2.go
index e373ad9..7ba7098 100644
--- a/internal/rosa/libxml2.go
+++ b/internal/rosa/libxml2.go
@@ -13,6 +13,7 @@ func (t Toolchain) newLibxml2() pkg.Artifact {
 	)
 	return t.New("libxml2-"+version, false, []pkg.Artifact{
 		t.Load(Make),
+		t.Load(XZ),
 	}, nil, nil, `
 cd /usr/src/
 tar xf libxml2.tar.xz
diff --git a/internal/rosa/musl.go b/internal/rosa/musl.go
index 5b9c1e1..b863f06 100644
--- a/internal/rosa/musl.go
+++ b/internal/rosa/musl.go
@@ -44,6 +44,7 @@ rmdir -v /work/lib
 
 	return t.New("musl-"+version, false, stage3Concat(t, attr.Extra,
 		t.Load(Make),
+		t.Load(Coreutils),
 	), nil, slices.Concat([]string{
 		"ROSA_MUSL_TARGET=" + target,
 	}, attr.Env), `
diff --git a/internal/rosa/perl.go b/internal/rosa/perl.go
index 5675604..aae70e4 100644
--- a/internal/rosa/perl.go
+++ b/internal/rosa/perl.go
@@ -13,6 +13,7 @@ func (t Toolchain) newPerl() pkg.Artifact {
 chmod -R +w /usr/src/perl && cd /usr/src/perl
 
 echo 'print STDOUT "1..0 # Skip broken test\n";' > ext/Pod-Html/t/htmldir3.t
+rm -f /system/bin/ps # perl does not like toybox ps
 
 ./Configure \
 	-des \
diff --git a/internal/rosa/rosa.go b/internal/rosa/rosa.go
index 9e4adcc..201699f 100644
--- a/internal/rosa/rosa.go
+++ b/internal/rosa/rosa.go
@@ -190,7 +190,7 @@ func (t Toolchain) New(
 
 	var (
 		path    = AbsSystem.Append("bin", "sh")
-		args    = []string{"mksh", absCureScript.String()}
+		args    = []string{"sh", absCureScript.String()}
 		support []pkg.Artifact
 	)
 	switch t {
@@ -255,7 +255,7 @@ ln -vs ../usr/bin /work/bin
 			runtimes,
 			clang,
 			boot.Load(Mksh),
-			boot.Load(Busybox),
+			boot.Load(Toybox),
 		})
 		env = fixupEnviron(env, []string{
 			EnvTriplet + "=" + triplet(),