Description
The default linker in yarn 3+ is Plug'n'Play, which wraps the Node.js require mechanics so it can control filesystem layout.
Most of the time this is a virtual filesystem built on zip files, but we know this won't work with sharp so the prebuilt binaries are already configured to be "unplugged".
sharp/npm/linux-x64/package.json
Line 16 in 004fff9
However yarn unplugs to a directory name that contains a hash.
.yarn/unplugged/@img-sharp-libvips-linux-x64-npm-1.0.0-7dae7d64d5/...
I had assumed this was a content-based hash and therefore we wouldn't know it up-front. However it looks like it's a sha512 hash of the package scope, name and version.
$ echo -n "imgsharp-libvips-linux-x64" | sha512sum
66eeeaa2992db3c78bc9680eed56bf22325281230b955df181e137a0835f3849749df49a58b589b1d3aa3be61944322752da5426e05688eb8a64132ce3bd6531
$ echo -n "66eeeaa2992db3c78bc9680eed56bf22325281230b955df181e137a0835f3849749df49a58b589b1d3aa3be61944322752da5426e05688eb8a64132ce3bd6531npm:1.0.0" | sha512sum | head -c10
7dae7d64d5
This means we should be able to add an rpath to satisfy yarn's Plug'n'Play filesystem layout.
Lines 176 to 179 in 004fff9
This will result in something like (untested):
$ORIGIN/../../../../../@img-sharp-libvips-linux-x64-npm-1.0.0-7dae7d64d5/node_modules/@img/sharp-libvips-linux-x64/lib/
See 004fff9 for some discussion about this.