1 files changed, 48 insertions, 0 deletions
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..21038e8
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,48 @@
+{
+  description = "gsa-parser";
+
+  inputs.haskellNix.url = "github:input-output-hk/haskell.nix";
+  inputs.nixpkgs.follows = "haskellNix/nixpkgs-unstable";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+
+  outputs = { self, nixpkgs, flake-utils, haskellNix }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        overlay = self: _: {
+          hsPkgs =
+            self.haskell-nix.project' rec {
+              src = ./.;
+              compiler-nix-name = "ghc8107";
+              shell = {
+                tools = {
+                  cabal = { };
+                  ghcid = { };
+                  haskell-language-server = { };
+                  hlint = { };
+                  ormolu = { };
+                };
+                ## ormolu that uses ImportQualifiedPost.
+                ## To use, remove ormolu from the shell.tools section above, and uncomment the following lines.
+                # buildInputs =
+                #   let
+                #     ormolu = pkgs.haskell-nix.tool compiler-nix-name "ormolu" "latest";
+                #     ormolu-wrapped = pkgs.writeShellScriptBin "ormolu" ''
+                #       ${ormolu}/bin/ormolu --ghc-opt=-XImportQualifiedPost $@
+                #     '';
+                #   in
+                #   [ ormolu-wrapped ];
+              };
+            };
+        };
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [
+            haskellNix.overlay
+            overlay
+          ];
+        };
+        flake = pkgs.hsPkgs.flake { };
+      in
+      flake // { defaultPackage = flake.packages."gsa-parser:exe:gsa-parser-exe"; }
+    );
+}