Meson experiment #1386
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Meson experiment #1386
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Did not get very far. Obstacles:
Meson's crates.io dependency support is not compatible with packages published by 1.83-beta or newer versions of Cargo. Package.__init__() got an unexpected keyword argument 'autolib' mesonbuild/meson#13826. This is easy to work around by patching the published Cargo.toml files.
I did not find any way to enable non-default features on a wrap-file crates.io subproject, other than handwriting the entire meson.build for it. We would need this for syn's "full" features.
Subprojects are always only compiled for the "host machine". For dependencies of a procedural macro, such as cxxbridge-macro's dependency on syn, we need them compiled for the "build machine" which is not supported. There is recent progress on this in Allow subprojects to be built for both the build and host machine mesonbuild/meson#12994.