diff --git a/build.lua b/build.lua
new file mode 100644
index 0000000..d667228
--- /dev/null
+++ b/build.lua
@@ -0,0 +1,8 @@
+#!/use/bin/env texlua
+
+module = "luametalatex"
+
+tdsroot = "luametatex" -- Would be luametalatex but we use the same files for luametaplain
+
+installfiles = {"luametalatex*.lua", "luametaplain*.lua"}
+sourcefiles = {"*.lua"}
diff --git a/install.sh b/install.sh
index d2c32f7..caf1a0a 100755
--- a/install.sh
+++ b/install.sh
@@ -1,33 +1,23 @@
 #!/bin/sh
+luametatex --credits >/dev/null || exit 1
+l3build install
 ENGINE="$(which luametatex$EXE_EXT)"
 ENGINE_DIR="$(dirname "$ENGINE")"
 REPO="$(pwd)"
 cd "$(dirname "$ENGINE")"
-ln -s luametatex$EXE_EXT luametaplain$EXE_EXT
-ln -s luametatex$EXE_EXT luametalatex$EXE_EXT
-ln -s luametatex$EXE_EXT luametalatex-dev$EXE_EXT
-ln -s "$REPO/luametaplain.lua" .
-ln -s "$REPO/luametalatex.lua" .
-ln -s "$REPO/luametalatex-dev.lua" .
-while [ ! -d texmf ] && [ ! -d texmf-local ]
-do
-  LASTDIR="$(pwd)"
-  cd ..
-  if [ "$(pwd)" == "$LASTDIR" ]
-  then
-    exit 1
-  fi
-done
-if [ -d texmf ]
-then cd texmf
-else cd texmf-local
-fi
-mkdir -p tex/luameta{plain,latex{,-dev}}
-ln -s "$REPO" tex/luametaplain/base
-ln -s "$REPO" tex/luametalatex/base
-ln -s "$REPO" tex/luametalatex-dev/base
+ln -fs luametatex$EXE_EXT luametaplain$EXE_EXT
+ln -fs luametatex$EXE_EXT luametalatex$EXE_EXT
+ln -fs luametatex$EXE_EXT luametalatex-dev$EXE_EXT
+ln -fs "$REPO/luametaplain.lua" luametaplain.lua
+ln -fs "$REPO/luametalatex.lua" luametalatex.lua
+ln -fs "$REPO/luametalatex-dev.lua" luametalatex-dev.lua
+cd "$(kpsewhich -var-value TEXMFLOCAL)"
 mkdir -p web2c
-cat >> web2c/texmf.cnf << "EOF"
+if kpsewhich -var-value LUAINPUTS.luametalatex > /dev/null
+then
+  echo 'LUAINPUTS for luametalatex already set. In case of issues, please verify that the entries are correct.'
+else
+  cat >> web2c/texmf.cnf << "EOF"
 TEXINPUTS.luametaplain    = $TEXMFDOTDIR;$TEXMF/tex/{luametaplain,luametatex,luatex,plain,generic,}//
 TEXINPUTS.luametalatex    = $TEXMFDOTDIR;$TEXMF/tex/{luametalatex,lualatex,latex,luametatex,luatex,generic,}//
 TEXINPUTS.luametalatex-dev= $TEXMFDOTDIR;$TEXMF/tex/{luametalatex,latex-dev,lualatex,latex,luametatex,luatex,generic,}//
@@ -36,10 +26,17 @@ LUAINPUTS.luametaplain    = $TEXMFDOTDIR;$TEXMF/scripts/{$progname,$engine,}/{lu
 LUAINPUTS.luametalatex    = $TEXMFDOTDIR;$TEXMF/scripts/{$progname,$engine,}/{lua,}//;$TEXMF/tex/{luametalatex,lualatex,latex,luametatex,luatex,generic,}//
 LUAINPUTS.luametalatex-dev= $TEXMFDOTDIR;$TEXMF/scripts/{$progname,$engine,}/{lua,}//;$TEXMF/tex/{luametalatex,latex-dev,lualatex,latex,luametatex,luatex,generic,}//
 EOF
+fi
 
-cat >> web2c/fmtutil.cnf << "EOF"
-luametaplain luametatex language.dat,language.dat.lua --lua="$(kpsewhich luametalatex.lua)" luametaplain.ini
+if fmtutil-user --listcfg|grep -q '^luametalatex '
+then
+  echo 'luametalatex format already known. In case of issues, please verify that the entries are correct.'
+else
+  cat >> web2c/fmtutil.cnf << "EOF"
+luametaplain luametatex language.dat,language.dat.lua --lua="$(kpsewhich luametaplain.lua)" luametaplain.ini
 luametalatex luametatex language.dat,language.dat.lua --lua="$(kpsewhich luametalatex.lua)" luametalatex.ini
 luametalatex-dev luametatex language.dat,language.dat.lua --lua="$(kpsewhich luametalatex-dev.lua)" luametalatex.ini
 EOF
+fi
+
 echo INSTALLED