chore: add nix support

Signed-off-by: Rudi Grinberg <me@rgrinberg.com>
janestreet · Sep 26, 2023 · e383bce · e383bce
1 parent cfa1f30
commit e383bce
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diff --git a/Makefile b/Makefile
@@ -27,4 +27,8 @@ promote:
 fmt:
 	dune build @fmt --auto-promote
 
+.PHONY: nix/opam-selection.nix
+nix/opam-selection.nix:
+	nix-shell -A resolve default.nix
+
 .PHONY: default install uninstall reinstall clean test
diff --git a/flake.lock b/flake.lock
diff --git a/flake.nix b/flake.nix
@@ -0,0 +1,32 @@
+{
+  description = "spawn Nix Flake";
+
+  inputs.nix-filter.url = "github:numtide/nix-filter";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+  inputs.nixpkgs.url = "github:nixos/nixpkgs";
+
+  outputs = { self, nixpkgs, flake-utils, nix-filter }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages."${system}";
+        inherit (pkgs.ocamlPackages) buildDunePackage;
+      in
+      rec {
+        packages = rec {
+          default = spawn;
+          spawn = buildDunePackage {
+            pname = "spawn";
+            version = "n/a";
+            src = ./.;
+            duneVersion = "3";
+            propagatedBuildInputs = with pkgs.ocamlPackages; [ ];
+            checkInputs = with pkgs.ocamlPackages; [ ppx_expect ppx_bench ];
+            doCheck = true;
+          };
+        };
+        devShells.default = pkgs.mkShell {
+          inputsFrom = pkgs.lib.attrValues packages;
+          buildInputs = with pkgs.ocamlPackages; [ ocaml-lsp pkgs.ocamlformat_0_19_0 ];
+        };
+      });
+}