diff --git a/src/idl/dustem_make_minimal_filelist.pro b/src/idl/dustem_make_minimal_filelist.pro
new file mode 100644
index 0000000..c6742c2
--- /dev/null
+++ b/src/idl/dustem_make_minimal_filelist.pro
@@ -0,0 +1,50 @@
+PRO dustem_make_minimal_filelist
+
+  depfiles=file_search('DustEMWrap_nosys_*xcat',count=nfiles)
+
+  for i=0,nfiles-1 do begin
+     if i eq 0 then st=read_xcat(depfiles[i])
+     if i ge 1 then begin
+        tmp=read_xcat(depfiles[i])
+        st=[st,tmp]
+     endif
+        
+  endfor
+
+  st=st(sort(st.path))
+  st=st(uniq(st.path))
+  
+  for i=0,n_elements(st)-1 do begin
+     st[i].path=strmid(st[i].path,strlen(!dustem_wrap_soft_dir))
+     print,st[i].path
+  endfor
+  stop
+
+; the above will dump the list of routines to the screen.
+
+; after that I just cut and pasted the output to a .txt file
+; dustem_minimal_filelist.txt
+
+; which I moved to !dustem_wrap_soft_dir
+
+; then I changed wd to !dustem_wrap_soft_dir
+
+; then I added the top level .txt and .xcat files, i.e.
+; ls README.txt >>  dustem_minimal_filelist.txt
+; ls instrument_description.xcat >>  dustem_minimal_filelist.txt
+
+; for now I left out the Docs
+
+; then I added the contents of Data using
+; find Data -type f >> dustem_minimal_filelist.txt  
+
+; and manually removed a few transmission files that I knew were not
+; in the repo (MIRI/*_trans.fits) or tmp files  ~file~, #file# type things
+
+; and finally to make the tarball I ran
+; tar cvf dustemwrap_minimal.tar -T dustem_minimal_filelist.txt
+  
+  
+  the_end:
+  
+END
--
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