Merge pull request #374 from JonathanLorimer/jonathan/add-nix-shell

Add nix-shell and hie.yaml for development purposes

.gitignore

@@ -1,4 +1,6 @@
 dist/
+dist-newstyle/
 .cabal-sandbox
 cabal.sandbox.config
 .stack*
+stack.yaml.lock

flake.nix

@@ -0,0 +1,59 @@
+{
+  description = ''
+  This is an implementation of Cloud Haskell, as described in
+  /Towards Haskell in the Cloud/ by Jeff Epstein, Andrew Black,
+  and Simon Peyton Jones
+  (<http://research.microsoft.com/en-us/um/people/simonpj/papers/parallel/>),
+  although some of the details are different. The precise message
+  passing semantics are based on /A unified semantics for future Erlang/
+  by Hans Svensson, Lars-&#xc5;ke Fredlund and Clara Benac Earle.
+  '';
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+    rank1dynamic-src = {
+      flake = false;
+      url = "github:haskell-distributed/rank1dynamic/53c5453121592453177370daa06f098cb014c0d3";
+    };
+  };
+
+  outputs = {
+    self,
+    nixpkgs,
+    rank1dynamic-src
+  }: let
+    forAllSystems = function: nixpkgs.lib.genAttrs [ "x86_64-linux" "aarch64-linux" ] (system: function rec {
+      inherit system;
+      compilerVersion = "ghc945";
+      pkgs = nixpkgs.legacyPackages.${system};
+      hsPkgs = pkgs.haskell.packages.${compilerVersion}.override {
+        overrides = hfinal: hprev: {
+          # Internal Packages
+          distributed-process = hfinal.callCabal2nix "distributed-process" ./. {};
+
+          # External Packages
+          rank1dynamic = hfinal.callCabal2nix "rank1dynamic" rank1dynamic-src {};
+        };
+      };
+    });
+  in {
+    formatter = forAllSystems ({pkgs, ...}: pkgs.alejandra);
+
+    # nix develop
+    devShells = forAllSystems ({hsPkgs, pkgs, ...}: {
+      default = hsPkgs.shellFor {
+        name = "distributed-process";
+        packages = p: [
+          p.distributed-process
+        ];
+        buildInputs = with pkgs;
+          [
+            hsPkgs.haskell-language-server
+            hsPkgs.cabal-install
+            cabal2nix
+            haskellPackages.ghcid
+          ];
+      };
+    });
+  };
+}

hie.yaml

@@ -0,0 +1,12 @@
+cradle:
+  cabal:
+    - path: "./src"
+      component: "lib:distributed-process"
+    - path: "./benchmark/Latency.hs"
+      component: "bench:distributed-process-latency"
+    - path: "./benchmark/Channels.hs"
+      component: "bench:distributed-process-channels"
+    - path: "./benchmark/Spawns.hs"
+      component: "bench:distributed-process-spawns"
+    - path: "./benchmark/ProcessRing.hs"
+      component: "bench:distributed-process-ring"