diff --git a/marzipan/src/__init__.py b/marzipan/src/__init__.py
index 8a78ab5..2b40f14 100644
--- a/marzipan/src/__init__.py
+++ b/marzipan/src/__init__.py
@@ -41,6 +41,17 @@ def cpp(file, cpp_prep):
     params = ["cpp", "-P", f"-I{cwd}/{dirname}", file, "-o", cpp_prep]
     return exc(params, stderr=pkgs.sys.stderr)
 
+
+@click.command()
+@click.argument("cpp_prep")
+@click.argument("awk_prep")
+def awk_prep(cpp_prep, awk_prep):
+    params = ["awk", "-f", "marzipan/marzipan.awk", cpp_prep]
+    with open(awk_prep, 'w') as file:
+        exc(params, stderr=pkgs.sys.stderr, stdout=file)
+        file.write("\nprocess main")
+
+
 @click.command()
 @click.argument("prefix")
 @click.argument("mark")
@@ -96,5 +107,6 @@ main.add_command(analyze)
 main.add_command(clean)
 main.add_command(run_proverif)
 main.add_command(cpp)
+main.add_command(awk_prep)
 main.add_command(pretty_output_line)
 main.add_command(clean_warnings)
diff --git a/marzipan/src/analyze.sh b/marzipan/src/analyze.sh
index 71b94d1..ba0fbf2 100755
--- a/marzipan/src/analyze.sh
+++ b/marzipan/src/analyze.sh
@@ -99,17 +99,10 @@ metaverif() {
   local name; name="$(echo "${file}" | grep -Po '[^/]*(?=\.mpv)')"
 
   local cpp_prep; cpp_prep="${tmpdir}/${name}.i.pv"
-
-  echo "internal metaverif"
+  local awk_prep; awk_prep="${tmpdir}/${name}.o.pv"
 
   exc rosenpass-marzipan cpp ${file} ${cpp_prep}
-
-
-  local awk_prep; awk_prep="${tmpdir}/${name}.o.pv"
-  {
-    exc awk -f marzipan/marzipan.awk "${cpp_prep}"
-    echo -e "\nprocess main"
-  } > "${awk_prep}"
+  exc rosenpass-marzipan awk-prep ${cpp_prep} ${awk_prep}
 
   local log; log="${tmpdir}/${name}.log"
   {