Use haskellSrc2nix over explicit cabal2nix

Use the (undocumented!) helper function haskellSrc2nix over having to
explicitly run cabal2nix all the time when rebuilding

1 files changed, 7 insertions, 0 deletions

diff --git a/pkg.nix b/pkg.nix
new file mode 100644
index 000000000000..d3b65a64f337
--- /dev/null
+++ b/pkg.nix
@@ -0,0 +1,7 @@
+{ nixpkgs ? import ./nixpkgs.nix {} }:
+let inherit (nixpkgs) pkgs; in
+import (pkgs.haskellPackages.haskellSrc2nix {
+  name = "xanthous";
+  src = ./.;
+  extraCabal2nixOptions = "--hpack";
+})