Add js-cross devShell
#169
Conversation
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It looks good to me but I'm not a nix user. @doyougnu would you like to review? |
This was previously done to avoid forcing these derivations if we aren't targetting wasi, yet laziness already ensures this.
This introduces a new devShell intended for building the Wasm backend.
This merely injects `--host` and `--target` flags into the recommended `configure` arguments.
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FWIW, this is essentially the same as what I am running locally (and was about to PR -- thanks @bgamari for saving me the effort of cleaning my local hacks up!) It may be nice to add some brief documentation to |
| cp -Lr ${emscripten}/share/emscripten/cache .emscripten_cache | ||
| chmod u+rwX -R .emscripten_cache | ||
| export EM_CACHE=.emscripten_cache |
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Ah we should replace these three lines because they are a hack. The problem is that this code never cleans up the .emscripten_cache so the file system gets littered with duplicates after a while.
This should work:
| cp -Lr ${emscripten}/share/emscripten/cache .emscripten_cache | |
| chmod u+rwX -R .emscripten_cache | |
| export EM_CACHE=.emscripten_cache | |
| export EM_CACHE=$(mktemp -d) |
For the record that comes from the preconfigure phase of ghcjs in Haskell.nix.
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Should #166 be merged first? PRs seem to overlap a bit! |
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BTW - CI pipelines for new targets are always highly appreciated ;) They are free for open source projects at GitHub and they ensure we're not accidentally breaking your use case. You may e.g. start by copying and adjusting https://github.com/alpmestan/ghc.nix/blob/master/.github/workflows/ci.yml . |
Indeed I think that would be best. |
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@bgamari do you want to clean this up and rebase or may I perhaps take this over? Thanks in advance :) |
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Oops, I didn't see this before I opened #175 ! |
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I only tested my patch with |
As suggested by @doyougnu on alpmestan#169.
As suggested by @doyougnu on alpmestan#169.
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I've continued in #176 . |
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Closing in favor of #176. |
This adds a convenient
devShellfor bringing up an environment for building a JS backend cross-compiler.