Add Guix step including bootstrap bin, build guix, build iso and fix some small bug

steps-guix/tar-1.30/pass1.sh

@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+SEED_PREFIX="/bootstrap-seeds/tar-1.30"
+
+src_configure() {
+    FORCE_UNSAFE_CONFIGURE=1 CFLAGS="-O2" LDFLAGS="-static" ./configure \
+        --prefix="${SEED_PREFIX}" \
+        --disable-nls \
+        gl_cv_func_getcwd_path_max="no, but it is partly working"
+}
+
+src_compile() {
+    make "${MAKEJOBS}" MAKEINFO=true
+}
+
+src_install() {
+    make DESTDIR="${DESTDIR}" MAKEINFO=true install
+}

steps-guix/tar-1.30/sources

@@ -0,0 +1 @@
+f https://mirrors.kernel.org/gnu/tar/tar-1.30.tar.xz f1bf92dbb1e1ab27911a861ea8dde8208ee774866c46c0bb6ead41f4d1f4d2d3