included libraries; recent xz-utils / liblzma compromise about vim-appimage HOT 4 CLOSED

yes, so we should not be affected. So anything to do for us here?

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On the compromise, no, we should be more than OK (but I thought I'd check).

I'm trying to figure out what's going on with the embedded languages. We clearly ship some libraries as ldd shows (and unlike what the release notes state).

• Python 3 apparently does not run out of the box (:python3 yields E319).
• Python 2 also does not work (E887) but it seems like it might be fixable by using the target's runtime (?)
• Lua seems to work and fixed at 5.3
• Perl at 5.30

I think the release notes are also wrong about installing those interpreters on the system — if they work at all, they will work with the builtin appimage version.

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Findings: all interpreters are currently configured with --enable-*interp. This means right now:

• all interpreters are "available" regardless of what's installed on the user's system
• but unless the user has Ubuntu 20.04, no interpreter will find their default packages
• in particular, Python 2 is enabled, but it can't actually run anything useful
• the others work to varying degrees (e.g. Lua doesn't seem to need anything)

I've reconfigured my builds to include this in scripts/build_vim.sh

CFG_OPTS+=( "--disable-pythoninterp" )
CFG_OPTS+=( "--enable-python3interp=dynamic" )
CFG_OPTS+=( "--with-python3-stable-abi=3.8" )

Only Python3 seems to have stable-ABI capabilities. On any system, one can set pythonthreedll=libpython3.11.so or whatever, and appimage-vim will use it. To simplify things, I've written a vim script to auto-search for an the appropriate "dll" (link below); it seems to work on at least Debian derivatives.

For the other interpreters , vimhelp says this about */dyn configurations:

The version of the shared library must match the $INTERP version Vim was compiled with.

… so for those, maybe non-dynamic is the least bad option.

What do you think should be done? I could

• turn on dynamic python3 and disable python2 with the CFG ops above
• document the real state of affairs
• add a PR for search-interpreter-dlls.vim to the main branch, and
• • (maybe?) add it to the appimage-vim's default startup sequence, though this seems too much

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fixed by #70

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