Thank you for this build, I suppose it should be used with cabal-install-3.12 prerelease which supports js-sources. It seems like I can find a build plan for miso using the following command line for the sample-app (from inside the miso repo).
It does seem like “latest” is not correct, since the GHC build is for a specific version of Emscripten, and not the latest.
cabal build --with-ghc=javascript-unknown-ghcjs-ghc \
--with-ghc-pkg=javascript-unknown-ghcjs-ghc-pkg \
--allow-newer=servant:base \
-c 'singleton-bool>=0.1.8' -c 'servant>=0.20.1' -c 'miso>=1.8.4' \
-c 'aeson>=2.2.2.0' -c 'dec>=0.0.6' -c 'boring>=0.2.2'
The solver will most likely pick lucid-2.9.9 because newer versions of lucid aren’t compatible with base-4.20 yet. You can track that issue here: