Compile primer to a Wasm target

[dhess]

Links:

• https://gitlab.haskell.org/ghc/ghc-wasm-meta

[brprice]

A while ago I hacked together a branch that compiles to wasm, and can run (and pass) the testsuite: https://github.com/hackworthltd/primer/tree/brprice/wasm. However, this did require some hacking of some dependencies which failed to build to wasm.

[georgefst]

However, this did require some hacking of some dependencies which failed to build to wasm.

I've actually been experimenting with WASM for personal projects, and I've found that the library situation is constantly improving, e.g. clock was recently fixed and splitmix is on the way. So this should become simpler each time we revisit it.