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I am trying to give tex4ebook or make4ht a try, but I get the following messages on my console.

$ tex4ebook lsdas15f
/usr/bin/tex4ebook:6: module 'lapp-mk4' not found:
        no field package.preload['lapp-mk4']
        [kpse lua searcher] file not found: 'lapp-mk4'
        [kpse C searcher] file not found: 'lapp-mk4'

or else

$ make4ht
/usr/bin/make4ht:7: module 'make4ht-logging' not found:
        no field package.preload['make4ht-logging']
        [kpse lua searcher] file not found: 'make4ht-logging'
        [kpse C searcher] file not found: 'make4ht-logging'

My guess is that I am missing some Lua packages in the process, but I am clueless as to how to track the dependencies on this complicated setup: I am running TeXLive on Cygwin64 on a Win10 box.

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  • Do you have full TeX Live 2021 installed? make4ht-logging could be missing in some earlier versions, but lapp-mk4 is core file that tex4ebook and make4ht required since beginning, so it is really strange that it is missing.
    – michal.h21
    Mar 3 at 20:27
  • don't know; but I usually install only what I need. I hate bloatware.
    – jarnosz
    Mar 3 at 20:29
  • I checked sources of both tex4ebook and make4ht, and the missing files are the first libraries they require. So it seems that you have installed only tex4ebook and make4ht scripts, but not Lua modules they require. I think that tlmgr install make4ht, tlmgr install tex4ht and tlmgr install tex4ebook should install all necessary files, unless something is broken.
    – michal.h21
    Mar 3 at 20:51
  • I did a search for the files and found them in their proper places, but the kpse library could not find them. I therefore updated the libraries as usual (per mktexlsr) and kpse could find them. there must be something broken in the installation scripts for cygwin. Didn't have to use tlmgr, so I can't tell about that.
    – jarnosz
    Mar 3 at 21:22

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