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deepfire/gist:501a01d9785c20b9fddae45775677304

Last active March 27, 2018 13:24
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gistfile1.txt
###
### GHC HEAD in nix-shell Nano-HOWTO
###
#
# 1. Choose GHC git REVision
# 2. Determine Nix hash (requires `nix-prefetch-scripts`) of the GHC source tree for the chosen revision:
nix-prefetch-git git://git.haskell.org/ghc.git --fetch-submodules --rev $REV
# 3. Enter nix-shell with chosen GHC (WARNING: substitute REV and HASH manually! Or do shell quoting : -)
nix-shell -p 'with (import <nixpkgs> {}); haskell.compiler.ghcHEAD.overrideAttrs (old: { src = fetchgit { url = "git://git.haskell.org/ghc.git"; rev = "$REV"; sha256 = "$HASH"; }; })'
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