Upgrading to the latest nsis installer and setting the compression to lzma in the config for the nsis installer I am able to produce a windows installer that is the same size as that achieved by the additional compression step through the post-processing 7z stage in the makefile.
In other words the stages for https://github.com/JuliaLang/julia/blob/master/Makefile#L467 are not needed.
What this means is that decompression occurs during the installation time.
Should I make a PR for this change?
This also means we can delete a whole bunch that extra junk required for the 7z stage and thus also resolve https://github.com/JuliaLang/julia/issues/30475
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This also means we can delete a whole bunch that extra junk required for the 7z stage and thus also resolve https://github.com/JuliaLang/julia/issues/30475