Load R package binaries from relative URL #121
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This might be revisited later, but to simplify deployment from a Quarto document we'll load `metadata.rds` from URL, rather than embedding it in `app.json`.
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schloerke
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Apr 17, 2024
Co-authored-by: Barret Schloerke <barret@posit.co>
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Includes #82.
Required as part of posit-dev/r-shinylive#63.
Adds the virtual VFS path
/shinylive/webr/packagesto the.libPaths()and attempts to mount Wasm R package binaries there using webR'swebr::mount()API with a relative URL.If no R package binary image exists at the URL, it will fallback to the current behaviour: using the default webR package repository with
webr::install().In the end, the following directories are in the search path, in order of preference:
/usr/lib/R/library- Base R packages, and packages explicitly downloaded from a Wasm package repository./shinylive/webr/packages- Packages bundled with the app, as decided byr-shinyliveat build time./shinylive/library- Packages bundled with Shinylive.Keeping these libraries separated allows for masking in the case where custom/newer/development versions of packages are required by a Shinylive app.