move to flakes

flake.nix

@@ -0,0 +1,56 @@
+{
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+    nixpkgs.url = "github:NixOS/nixpkgs/release-21.05";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let pkgs = nixpkgs.legacyPackages.${system};
+      in rec {
+        # `nix build`
+        packages.elo-anything = pkgs.stdenv.mkDerivation {
+          name = "elo-anything";
+          src = ./.;
+
+          buildInputs = [ pkgs.elmPackages.elm pkgs.elmPackages.elm-test ];
+          buildPhase = pkgs.elmPackages.fetchElmDeps {
+            elmPackages = import ./nix/elm-srcs.nix;
+            elmVersion = "0.19.1";
+            registryDat = ./nix/registry.dat;
+          };
+
+          doCheck = true;
+          checkPhase = ''
+            env ELM_HOME=.elm elm-test
+          '';
+
+          installPhase = ''
+            make dist
+            mkdir -p $out/share/
+            mv dist $out/share/elo-anything
+          '';
+        };
+        defaultPackage = packages.elo-anything;
+        overlay = final: prev: { elo-anything = packages.elo-anything; };
+
+        # `nix shell`
+        devShell = pkgs.mkShell {
+          buildInputs = with pkgs; [
+            git
+
+            # Elm
+            elmPackages.elm
+            elmPackages.elm-format
+            elmPackages.elm-json
+            elmPackages.elm-test
+            elm2nix
+
+            # Build Stuff
+            gnumake
+            modd
+            devd
+          ];
+        };
+      });
+}

shell.nix

@@ -1,26 +1,3 @@
-{ ... }:
-let
-  sources = import ./nix/sources.nix;
-
-  nixpkgs = import sources.nixpkgs { };
-
-  niv = import sources.niv { };
-in with nixpkgs;
-mkShell {
-  buildInputs = [
-    niv.niv
-    git
-
-    # Elm
-    elmPackages.elm
-    elmPackages.elm-format
-    elmPackages.elm-json
-    elmPackages.elm-test
-    elm2nix
-
-    # Build Stuff
-    gnumake
-    modd
-    devd
-  ];
-}
+(import (fetchTarball https://github.com/edolstra/flake-compat/archive/master.tar.gz) {
+  src = builtins.fetchGit ./.;
+}).shellNix

shell.nix.bak

@@ -0,0 +1,26 @@
+{ ... }:
+let
+  sources = import ./nix/sources.nix;
+
+  nixpkgs = import sources.nixpkgs { };
+
+  niv = import sources.niv { };
+in with nixpkgs;
+mkShell {
+  buildInputs = [
+    niv.niv
+    git
+
+    # Elm
+    elmPackages.elm
+    elmPackages.elm-format
+    elmPackages.elm-json
+    elmPackages.elm-test
+    elm2nix
+
+    # Build Stuff
+    gnumake
+    modd
+    devd
+  ];
+}