diff --git a/lib/preproc.lua b/lib/preproc.lua
deleted file mode 100644
index 1cdac5a..0000000
--- a/lib/preproc.lua
+++ /dev/null
@@ -1,69 +0,0 @@
-local preproc = {}
-preproc.directives = {}
-
-function preproc.parsewords(line) -- string -- table -- Returns a table of words from the string *line*, parsing quotes and escapes.
- local rt = {""}
- local escaped, quoted = false, false
- for c in line:gmatch(".") do
-  if escaped then
-   rt[#rt] = rt[#rt]..c
-  elseif c == '"' or c == "'" then
-   quoted = not quoted
-  elseif c == "\\" then
-   escaped = true
-  elseif c:match("%s") and not quoted and rt[#rt]:len() > 0 then
-   rt[#rt+1] = ""
-  else
-   rt[#rt] = rt[#rt]..c
-  end
- end
- return rt
-end
-
-function preproc.line(line) -- string -- -- Returns either a function - which can be called to get lines until it returns nil - or a string from processing *line* using preprocessor directives.
- if line:match("^%-%-#") then
-  local directive, args = line:match("^%-%-#(%S+)%s(.+)")
-  print(directive,args)
-  local args = preproc.parsewords(args)
-  if preproc.directives[directive] then
-   return preproc.directives[directive](table.unpack(args))
-  else
-   error("unknown preprocessor directive: "..directive)
-  end
- else
-  return line
- end
-end
-
-function preproc.preproc(...) -- string -- string -- Returns the output from preprocessing the files listed in *...*.
- local tA = {...}
- local output = ""
- for _,fname in ipairs(tA) do
-  local f,e = io.open(fname)
-  if not f then error("unable to open file "..fname..": "..e) end
-  for line in f:lines() do
-   local r = preproc.line(line)
-   if type(r) == "function" then
-    while true do
-     local rs = r()
-     if not rs then break end
-     output = output .. rs .. "\n"
-    end
-   else
-    output = output .. r .. "\n"
-   end
-  end
- end
- return output
-end
-
-preproc.directives.include = preproc.preproc
-
-return setmetatable(preproc,{__call=function(_,...)
- local tA = {...}
- local out = table.remove(tA,#tA)
- local f,e = io.open(out,"wb")
- if not f then error("unable to open file "..out..": "..e) end
- f:write(preproc.preproc(table.unpack(tA)))
- f:close()
-end})
diff --git a/lib/unionfs.lua b/lib/unionfs.lua
deleted file mode 100644
index ca4051d..0000000
--- a/lib/unionfs.lua
+++ /dev/null
@@ -1,114 +0,0 @@
-local unionfs = {}
-
-local function normalise(path)
- return table.concat(fs.segments(path),"/")
-end
-
-function unionfs.create(...) -- string -- table -- Returns a unionfs object of the directories specified in *...*.
- local paths,fids,fc = {...}, {}, 0
- for k,v in pairs(paths) do
-  paths[k] = "/"..normalise(v)
- end
- local proxy = {}
- local function realpath(path)
-  path = path or ""
-  for k,v in pairs(paths) do
-   if fs.exists(v.."/"..path) then
-    return v.."/"..path
-   end
-  end
-  return paths[1].."/"..path
- end
-
- function proxy.setLabel()
-  return false
- end
- 
- function proxy.spaceUsed()
-  return fs.spaceUsed(paths[1])
- end
- function proxy.spaceTotal()
-  return fs.spaceTotal(paths[1])
- end
- function proxy.isReadOnly()
-  return fs.isReadOnly(paths[1])
- end
- function proxy.isDirectory(path)
-  return fs.isDirectory(realpath(path))
- end
- function proxy.lastModified(path)
-  return fs.lastModified(realpath(path))
- end
- function proxy.getLabel()
-  return fs.getLabel(paths[1])
- end
-
- function proxy.exists(path)
-  return fs.exists(realpath(path))
- end
- function proxy.remove(path)
-  return fs.remove(realpath(path))
- end
- function proxy.size(path)
-  return fs.size(realpath(path))
- end
-
- function proxy.list(path)
-  local nt,rt = {},{}
-  if #fs.segments(path) < 1 then
-   for k,v in pairs(paths) do
-    for l,m in ipairs(fs.list(v.."/"..path)) do
-     nt[m] = true
-    end
-   end
-   for k,v in pairs(nt) do
-    rt[#rt+1] = k
-   end
-   table.sort(rt)
-   return rt
-  else
-   return fs.list(realpath(path))
-  end
- end
-
- function proxy.open(path,mode)
-  local fh, r = fs.open(realpath(path),mode)
-  if not fh then return fh, r end
-  fids[fc] = fh
-  fc = fc + 1
-  return fc - 1
- end
-
- function proxy.close(fid)
-  if not fids[fid] then
-   return false, "file not open"
-  end
-  local rfh = fids[fid]
-  fids[fid] = nil
-  return rfh:close()
- end
- function proxy.write(fid,d)
-  if not fids[fid] then
-   return false, "file not open"
-  end
-  return fids[fid]:write(d)
- end
- function proxy.read(fid,d)
-  if not fids[fid] then
-   return false, "file not open"
-  end
-  local rb = fids[fid]:read(d)
-  if rb == "" then rb = nil end
-  return rb
- end
- function proxy.seek(fid,d)
-  if not fids[fid] then
-   return false, "file not open"
-  end
-  return fids[fid]:seek(d)
- end
-
- return proxy
-end
-
-return unionfs