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\logo [LUAMETATEX] {LuaMeta\TeX}

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\setupdocument
  [title={Lean and mean},
   subtitle={\LUAMETATEX},
   location={\ConTeXt\ meeting, September 2019},
   author={Hans & Alan},
   mp:title={\LUAMETATEX}]

\startdocument

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\page \setupdocument[mp:subtitle={How it became}]

\startitemize
    \starthead {interferences:}
        \CONTEXT, plain \TEX\ and \LATEX\ all have different demands (we want to
        experiment and move on and users pick up fast)
    \stophead
    \starthead {complexity:}
        the source tree is way too complex as is the build (we only need \LUATEX)
    \stophead
    \starthead {distributions:}
        no one can guarantee stability for \CONTEXT\ (being a minor player but
        often a bit ahead)
    \stophead
    \starthead {annoyances:}
        experimental codes leads to usage outside \CONTEXT\ and that triggers
        complaints
    \stophead
    \starthead {motivation:}
        running into folks who love to stress \quotation {huge bugs} and
        \quotation {much instability} wastes energy
    \stophead
    \starthead {arguments:}
        I got tired of \quotation {you need to support this because \unknown}
        blabla
    \stophead
    \starthead {nagging:}
        like \quotation {the manual \unknown} is becoming too tiresome, so best
        keep experiments within the \CONTEXT\ bubble
    \stophead
\stopitemize

\page \setupdocument[mp:subtitle={What it is}]

\startitemize
    \starthead {simplification:}
        we don't need all what is currently in the \LUATEX\ engine as we don't
        use it
    \stophead
    \starthead {source:}
        there is much less of it and we can get rid of \WEB\ artifacts
    \stophead
    \starthead {compilation:}
        there was much more going on than was needed and only a few knew those
        details
    \stophead
    \starthead {consistency:}
        to guarantee consistency with \CONTEXT\ the source code will be part of
        the source distribution (once I'm satisfied)
    \stophead
    \starthead {marketing:}
        this way the relation with \CONTEXT\ and its user base is more clear
    \stophead
    \starthead {playground:}
        we can move forward and experiment without the danger of running into
        problems with non \CONTEXT\ users: \quotation {use it at your own risk}
    \stophead
    \starthead {possibilities:}
        playing a bit more with the bits and pieces that are reponsible for most
        (interfering) issues, like the the (asynchronous) page builder
    \stophead
\stopitemize

\page \setupdocument[mp:subtitle={Implications}]

\startitemize
    \starthead {binary:}
        there is only one relatively small binary needed (that does all things
        needed)
    \stophead
    \starthead {code base:}
        there comes an extra source tree, but it's small (compresses to around 2
        MB)
    \stophead
    \starthead {user control:}
        if needed users can compile the program so we're self contained
    \stophead
    \starthead {future safe:}
        we can move forward and improve
    \stophead
    \starthead {modern:}
        a code base with the latest \LUATEX, \MPLIB\ and \LUA
    \stopitem
    \starthead {side effect:}
        we drop \LUAJIT\ as it doesn't keep up (and benefits are too small)
    \stophead
    \starthead {design:}
        we have a better separation between the Knuthian front- and output format
        driven backend
    \stophead
    \starthead {independent:}
        there is no dependency on external libraries, we keep all we need in the
        code base (we only use a few small third party libraries)
    \stophead
\stopitemize

\page \setupdocument[mp:subtitle={A few notes}]

\startitemize
    \starthead {hobyism}
        we don't need to carry the burden of everything (unless paid for it's
        only fun and users that drives development)
    \stophead
    \starthead {convenience:}
        the faster compilation makes reworking and experimenting reasonable
    \stophead
    \starthead {stepwise:}
        I take my time an do string stepswise because things should not break
        without fast recovery
    \stophead
    \starthead {feelgood:}
        this all fits well into the good old \TEX\ extension model
    \stophead
    \starthead {eventually:}
        when proven useful we can always push code upstream into \LUATEX
    \stophead
\stopitemize

\page \setupdocument[mp:subtitle={Bits and pieces}]

\startitemize
    \starthead {original:}
        the starting point is \LUATEX, original \WEB\ code, already \CWEB\ code
    \stophead
    \starthead {stability:}
        after a initial stage \LUATEX\ was stepwise extended till version one
        a few years ago
    \stophead
    \starthead {frozen:}
        there were only a few changes after that but no real conceptual ones
    \stophead
    \starthead {engine:}
        what is now called \LUAMETATEX\ is a reworked code base
    \stophead
    \starthead {graphics:}
        also \MPLIB\ has been reworked a bit and some extensions were added
    \stophead
    \starthead {libraries:}
        there are a few extra (small) helper libs, but all in the source tree
    \stophead
    \starthead {pplib:}
        we already use the next version of pplib
    \stophead
    \starthead {pruning:}
        and best of all, quite some not used code could go
    \stophead
\stopitemize

\page \setupdocument[mp:subtitle={Some details}]

\startitemize
    \starthead {source tree:}
        the code base has been regrouped, globals became more local (work in
        progress), header files were added
    \stophead
    \starthead {source files:}
        there is hardly any font related code, languages were kept, and the
        backend code is dropped: show files
    \stophead
    \starthead {libraries:}
        a few libs were added and dropped: show some
    \stophead
    \starthead {cmake:}
        compilation is different: work in progress
    \stophead
    \starthead {mkxl:}
        there are new files in \CONTEXT: \type {driv}, \type {lpdf}, \type {.mkxl}
        and expect more
    \stophead
    \starthead {binary:}
        there is only one stub for all
    \stophead
\stopitemize

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\stopdocument