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

steps-guix/grep-3.1/pass1.sh

@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+SEED_PREFIX="/bootstrap-seeds/grep-3.1"
+
+src_configure() {
+    CFLAGS="-O2" LDFLAGS="-static" ./configure \
+        --prefix="${SEED_PREFIX}" \
+        --disable-perl-regexp \
+        --disable-shared
+}
+
+src_compile() {
+    default_src_compile
+}
+
+src_install() {
+    make DESTDIR="${DESTDIR}" install
+}

steps-guix/grep-3.1/sources

@@ -0,0 +1 @@
+f https://mirrors.kernel.org/gnu/grep/grep-3.1.tar.xz db625c7ab3bb3ee757b3926a5cfa8d9e1c3991ad24707a83dde8a5ef2bf7a07e