[Optimization] Split prebuilds to OS specific packages

[belozer]

Currently, the pact-core package includes binary versions of the server for all platforms. And the package weighs 110 MB.

CI does not require all binary versions, only linux-x64 is needed... But instead, each CI launch downloads an extra 80 MB, which also affects the speed of passing the tests.

It is necessary to create your own package for each platform, as optionalDepencies with restrictions on OS and Arch.

Example:
https://github.com/biomejs/biome/blob/main/packages/%40biomejs/biome/package.json#L52-L61

And platform specific package:
https://github.com/biomejs/biome/blob/main/packages/%40biomejs/cli-linux-x64-musl/package.json

[mefellows]

It's a fair point. Previously we couldn't separate out the alpine/musl builds from the others, but that's a possibility now (both in terms of the npm toolchain, and the fact that we've removed the Ruby CLI from the distribution now).

Would you be open to a PR?

[YOU54F]

i’ve done the same for pact-js-cli and in my fork of pact-js-core

master...YOU54F:pact-js-core:feat/opt_dep_plat_arch_specific_packages

the linux arch specific deps will need to contain musl and non musl deps, as npm doesn’t provide the ability to distinguish between at install time

[YOU54F]

But instead, each CI launch downloads an extra 80 MB, which also affects the speed of passing the tests.

i disagree that this will affect the speed of your tests in any meaningful way.

[YOU54F]

hmm looks like libc field is supported but only in later versions of npm

npm/rfcs#438

[JP-Ellis]

That will be a very nice improvement, speeding up CI times (by virtue for having less to download and unpack, even if cached). Especially now that NPM supports the musl and gnu flavours. Looks like support for these flavours landed a year ago, so it should be quite safe to use that now.