This like Subleq where you can run EForth and EForth itself self-bootstraps:

https://github.com/howerj/muxleq

PD: you don't need gforth to compile:

        cc -O2 -o muxleq muxleq.c
      

Edit muxleq.fth, add some goodies by editing these values:

             1 constant opt.multi      ( Add in large "pause" primitive )
    1 constant opt.editor     ( Add in Text Editor )
    1 constant opt.info       ( Add info printing function )
    0 constant opt.generate-c ( Generate C code )
    1 constant opt.better-see ( Replace 'see' with better version )
    1 constant opt.control    ( Add in more control structures )
    0 constant opt.allocate   ( Add in "allocate"/"free" )
    1 constant opt.float      ( Add in floating point code )
    0 constant opt.glossary   ( Add in "glossary" word )
    1 constant opt.optimize   ( Enable extra optimization )
    1 constant opt.divmod     ( Use "opDivMod" primitive )
    0 constant opt.self       ( self-interpreter [NOT WORKING] )

Here are my settings.

Then, create a new ".dec" file (subleq program)

   : ./muxleq muxleq.dec < muxleq.fth > new.dec

Now, to run EForth everytime:

     ./muxleq new.dec

add these further in muxleq.fth code to have them:

     : d. tuck dabs <# #s rot sign #> type ;
     : */ */mod nip ;

The ideal place would be just below the ': dabs ' defition.