2018-05-12 05:06:47 +00:00
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New build system for GHCJS 8.2
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---
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`ghcjs-8.2` reworked the build system, and now comes with its own
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small package set of dependencies. This involves autogenerating
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several sources and cabal files, based on a GHC
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checkout. `callCabal2nix` is off limits, since we don't like "import
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from derivation" in nixpkgs. So there is a derivation that builds the
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nix expression that should be checked in whenever GHCJS is updated.
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Updating
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---
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```
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2018-07-16 02:13:52 +00:00
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$ nix-prefetch-git https://github.com/ghcjs/ghcjs --rev refs/heads/ghc-8.4 \
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2018-05-12 05:06:47 +00:00
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| jq '{ url, rev, fetchSubmodules, sha256 }' \
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2018-07-16 02:13:52 +00:00
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> 8.4/git.json
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$ cat $(nix-build ../../../.. -A haskell.compiler.ghcjs82.genStage0 --no-out-link) > 8.4/stage0.nix
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2018-07-16 05:14:55 +00:00
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$ cabal2nix --compiler ghcjs git://github.com/ghcjs/ghcjs-base > ghcjs-base.nix
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2018-05-12 05:06:47 +00:00
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```
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