add nix

Makefile

@@ -0,0 +1,27 @@
+build:
+	elm make src/VerifyExamples.elm --output bin/elm.js --optimize
+
+verify-own-docs: build
+	./bin/cli.js
+
+test: verify-own-docs
+	./run-tests.sh
+
+watch:
+	watchexec \
+  --clear \
+  --restart \
+  --watch src \
+  --watch example/src \
+  --watch elm.json \
+  "make test"
+
+
+release-major: test
+ npx xyz --repo git@github.com:stoeffel/elm-verify-examples.git --increment major
+
+release-minor: test
+	npx xyz --repo git@github.com:stoeffel/elm-verify-examples.git --increment minor
+
+release-patch: test
+	npx xyz --repo git@github.com:stoeffel/elm-verify-examples.git --increment patch

example/src/Failing.elm

@@ -1,19 +1,18 @@
-module Failing
-    exposing
-        ( noExample
-        , nope
-        )
+module Failing exposing
+    ( noExample
+    , nope
+    )
 
 {-| -}
 
 
 {-|
 
-    nope --> 2
+    nope --> 3
 
 -}
 nope =
-    3
+    2
 
 
 noExample =

flake.nix

@@ -0,0 +1,22 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-22.11";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let pkgs = import nixpkgs { inherit system; };
+      in {
+        devShells = {
+          default = pkgs.mkShell {
+            buildInputs = [
+              pkgs.elmPackages.elm
+              pkgs.gnumake
+              pkgs.nodejs-19_x
+              pkgs.watchexec
+            ];
+          };
+        };
+      });
+}