Create nix shell

Remove more devenv stuff

.envrc

@@ -1,3 +1 @@
-source_url "https://raw.githubusercontent.com/cachix/devenv/95f329d49a8a5289d31e0982652f7058a189bfca/direnvrc" "sha256-d+8cBpDfDBj41inrADaJt+bDWhOktwslgoP5YiGJ1v0="
-
-use devenv
+use flake

README.md

@@ -1 +1,6 @@
 # Blog
+
+```bash
+$ cd src
+$ jekyll serve
+```

flake.nix

@@ -6,8 +6,12 @@
     flutils.url = "github:numtide/flake-utils";
   };
 
-  outputs = { self, nixpkgs, flutils}: flutils.lib.eachDefaultSystem (system:
-    let
+  outputs = {
+    nixpkgs,
+    flutils,
+    ...
+  }:
+    flutils.lib.eachDefaultSystem (system: let
       pkgs = nixpkgs.legacyPackages.${system};
 
       gems = pkgs.bundlerEnv {
@@ -17,23 +21,24 @@
 
       patch-feed-date = pkgs.stdenv.mkDerivation {
         name = "path-feed-date";
-        propagatedBuildInputs = [ pkgs.python3 ];
+        propagatedBuildInputs = [pkgs.python3];
         dontUnpack = true;
         installPhase = "install -Dm755 ${./patch-feed-date.py} $out/bin/patch-feed-date";
       };
-    in
-    {
-      packages = {
+
+      buildInputs = [
+        gems
+        gems.wrappedRuby
+        patch-feed-date
+      ];
+    in {
+      packages = rec {
+        default = static-website;
         static-website = pkgs.stdenv.mkDerivation {
           name = "blog";
           src = ./src;
           sourceRoot = "src";
-
-          buildInputs = [
-            gems
-            gems.wrappedRuby
-            patch-feed-date
-          ];
+          inherit buildInputs;
 
           buildPhase = ''
             bundle exec jekyll build --future
@@ -46,5 +51,9 @@
           '';
         };
       };
+
+      devShells.default = pkgs.mkShell {
+        inherit buildInputs;
+      };
     });
 }