feat(steps-guix): add guile-avahi, guile-git, guile-json steps

steps-guix/guile-git-0.10.0/pass1.sh

@@ -0,0 +1,30 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+src_prepare() {
+    default
+    autoreconf -fi
+}
+
+src_configure() {
+    local host_triplet pkg_config_path
+    host_triplet="$(gcc -dumpmachine)"
+    pkg_config_path="${LIBDIR}/pkgconfig"
+
+    PATH="${PREFIX}/bin:/usr/bin:/bin" \
+    PKG_CONFIG_LIBDIR="${pkg_config_path}:${PREFIX}/lib/pkgconfig" \
+    PKG_CONFIG_PATH="${pkg_config_path}:${PREFIX}/lib/pkgconfig" \
+    LD_LIBRARY_PATH="${LIBDIR}:${LD_LIBRARY_PATH}" \
+    ./configure \
+        --prefix="${PREFIX}" \
+        --libdir="${LIBDIR}" \
+        --host="${host_triplet}" \
+        --build="${host_triplet}"
+}
+
+src_compile() {
+    default_src_compile
+}
+
+src_install() {
+    default_src_install
+}

steps-guix/guile-git-0.10.0/sources

@@ -0,0 +1 @@
+g https://gitlab.com/guile-git/guile-git.git~v0.10.0 https://gitlab.com/guile-git/guile-git/-/archive/v0.10.0/guile-git-v0.10.0.tar.gz df56c99464f08f1cad0f69d83825189fdd4e5c7868a6d2b299abc1e430b31f9e guile-git-v0.10.0.tar.gz