load filesystem libs prior to handling the cache directories

1 files changed, 30 insertions, 14 deletions

diff --git a/luaotfload.dtx b/luaotfload.dtx
index 16f7bf6..1438e8e 100644
--- a/luaotfload.dtx
+++ b/luaotfload.dtx
@@ -1499,6 +1499,34 @@ if tex.luatexversion < luatex_version then
 end
 
 %    \end{macrocode}
+% \subsection{Module loading}
+% We load the files imported from \CONTEXT with this function.
+% It automatically prepends the prefix \fileent{luaotfload-} to its
+% argument, so we can refer to the files with their actual \CONTEXT name.
+%
+%    \begin{macrocode}
+
+local fl_prefix = "luaotfload" -- “luatex” for luatex-plain
+local loadmodule = function (name)
+    require(fl_prefix .."-"..name)
+end
+
+%    \end{macrocode}
+%     The font loader expects the \TEX Live cache directories to be in
+%     place and due to some quirk in \fileent{data-con.lua} they are
+%     fixed during the run. It follows that we have to ensure their
+%     presence before we can initialize the fontloader.
+%     The most reliable way to do so is by using the
+%     \luafunction{mkdirs()} function from \CONTEXT’s
+%     \fileent{l-dir.lua}.
+%     Unfortunately, for this to work we need to to preload substantial
+%     parts of the \LUA libraries.
+%
+%    \begin{macrocode}
+
+loadmodule"filesystem-merged.lua"
+
+%    \end{macrocode}
 %   Prepare directories: the cache function in Luatex-Fonts checks for a
 %   writable directory only once during startup. If there is no
 %   \fileent{texmf-var} at this time it will create a subdirectory
@@ -1507,7 +1535,9 @@ end
 %
 %    \begin{macrocode}
 
+
 local cachepath = kpse.expand_var"$TEXMFVAR"
+
 if not lfs.isdir(cachepath) then
     dir.mkdirs(cachepath)
     if not lfs.isdir(cachepath) then
@@ -1516,19 +1546,6 @@ if not lfs.isdir(cachepath) then
 end
 
 %    \end{macrocode}
-% \subsection{Module loading}
-% We load the files imported from \CONTEXT with this function.
-% It automatically prepends the prefix \fileent{luaotfload-} to its
-% argument, so we can refer to the files with their actual \CONTEXT name.
-%
-%    \begin{macrocode}
-
-local fl_prefix = "luaotfload" -- “luatex” for luatex-plain
-local loadmodule = function (name)
-    require(fl_prefix .."-"..name)
-end
-
-%    \end{macrocode}
 % Before \TeX Live 2013 version, \LUATEX had a bug that made ofm fonts fail
 % when called with their extension. There was a side-effect making ofm
 % totally unloadable when luaotfload was present. The following lines are
@@ -1779,7 +1796,6 @@ add_to_callback("hpack_filter",
 add_to_callback("find_vf_file",
                 find_vf_file, "luaotfload.find_vf_file")
 
-loadmodule"lib-dir.lua"    --- required by luaofload-database.lua
 loadmodule"override.lua"   --- “luat-ovr”
 
 logs.set_loglevel(config.luaotfload.loglevel)