add haskell.nix build system

it's an annoying blockchain company, but apparently that thing is the
only usable option to build stack things with nix without having to
redefine all the (outdated) haskell packages in nixpkgs?

1 files changed, 1 insertions, 2 deletions

diff --git a/stack.yaml b/stack.yaml
index 428eea3..fb24c06 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,5 +1,4 @@
-resolver:
-  url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/18/16.yaml
+resolver: lts-18.16
 
 # User packages to be built.
 # Various formats can be used as shown in the example below.