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John Ericson 2c2f1e37d4 reewide: Purge all uses `stdenv.system` and top-level `system` It is deprecated and will be removed after 18.09.		2018-08-30 17:20:32 -04:00
..
8.2
8.4
common-overrides.nix
configured-ghcjs-src.nix	pkgs/*: remove unreferenced function arguments	2018-07-21 02:48:04 +00:00
default.nix	reewide: Purge all uses `stdenv.system` and top-level `system`	2018-08-30 17:20:32 -04:00
ghcjs-base.nix
mk-stage0.nix
README.md	Update readme with --compiler option for GHCJS	2018-07-16 01:14:55 -04:00

README.md

New build system for GHCJS 8.2

ghcjs-8.2 reworked the build system, and now comes with its own small package set of dependencies. This involves autogenerating several sources and cabal files, based on a GHC checkout. callCabal2nix is off limits, since we don't like "import from derivation" in nixpkgs. So there is a derivation that builds the nix expression that should be checked in whenever GHCJS is updated.

Updating

$ nix-prefetch-git https://github.com/ghcjs/ghcjs --rev refs/heads/ghc-8.4 \
  | jq '{ url, rev, fetchSubmodules, sha256 }' \
  > 8.4/git.json
$ cat $(nix-build ../../../.. -A haskell.compiler.ghcjs82.genStage0 --no-out-link) > 8.4/stage0.nix
$ cabal2nix --compiler ghcjs git://github.com/ghcjs/ghcjs-base > ghcjs-base.nix