chore: packaging

flake.lock

 {
   "nodes": {
-    "nix-filter": {
-      "locked": {
-        "lastModified": 1687178632,
-        "narHash": "sha256-HS7YR5erss0JCaUijPeyg2XrisEb959FIct3n2TMGbE=",
-        "owner": "numtide",
-        "repo": "nix-filter",
-        "rev": "d90c75e8319d0dd9be67d933d8eb9d0894ec9174",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "nix-filter",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1688679045,
@@ -25,50 +10,14 @@
         "type": "github"
       },
       "original": {
-        "owner": "NixOS",
+        "id": "nixpkgs",
         "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "indirect"
       }
     },
     "root": {
       "inputs": {
-        "nix-filter": "nix-filter",
-        "nixpkgs": "nixpkgs",
-        "utils": "utils"
-      }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    },
-    "utils": {
-      "inputs": {
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1687709756,
-        "narHash": "sha256-Y5wKlQSkgEK2weWdOu4J3riRd+kV/VCgHsqLNTTWQ/0=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "dbabf0ca0c0c4bce6ea5eaf65af5cb694d2082c7",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
+        "nixpkgs": "nixpkgs"
       }
     }
   },

flake.nix

 {
  description = "Bob: The HTML and HTML fragment builder";
-  inputs = {
-    nixpkgs.url = github:NixOS/nixpkgs/nixos-unstable;
-    utils.url = github:numtide/flake-utils;
-    nix-filter.url = github:numtide/nix-filter;
-  };
-
 
+  # Nixpkgs / NixOS version to use.
+  inputs.nixpkgs.url = "nixpkgs/nixos-unstable";
 
-  outputs = {self, nixpkgs, utils, nix-filter }:
+  outputs = { self, nixpkgs }:
     let
+
       # to work with older version of flakes
       lastModifiedDate = self.lastModifiedDate or self.lastModified or "19700101";
+
+      # Generate a user-friendly version number.
+      #version = builtins.substring 0 8 lastModifiedDate;
+
+
+      rootPath = ./.;
+      releaseJson = builtins.fromJSON (builtins.readFile "${rootPath}/release.json");
+      version = releaseJson.version;  
+
+
       # System types to support.
       supportedSystems = [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin" ];
 
@@ -21,14 +28,21 @@
       # Nixpkgs instantiated for supported system types.
       nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; });
 
-      rootPath = ./.;
-      releaseJson = builtins.fromJSON (builtins.readFile "${rootPath}/release.json");
-      currentVersion = releaseJson.version;        
-  in (utils.lib.eachDefaultSystem (system: rec {
-    packages.app = nixpkgs.legacyPackages.${system}.buildGoModule {
-            pname = "bob";
-            version = currentVersion;
 
+
+
+    in
+    {
+
+      # Provide some binary packages for selected system types.
+      packages = forAllSystems (system:
+        let
+          pkgs = nixpkgsFor.${system};
+        in
+        {
+          bob = pkgs.buildGoModule {
+            pname = "bob";
+            inherit version;
             # In 'nix develop', we don't need a copy of the source tree
             # in the Nix store.
             src = ././application/source;
@@ -41,10 +55,10 @@
             # it should be "out-of-band" with other tooling (eg. gomod2nix).
             # To begin with it is recommended to set this, but one must
             # remeber to bump this hash when your dependencies change.
-            #vendorSha256 = nixpkgs.legacyPackages.${system}.lib.fakeSha256;
+            #vendorSha256 = pkgs.lib.fakeSha256;
+
             vendorSha256 = "sha256-XdB+u94Rqsb29jVs4miyOq1NEYaVJHWFXg6QebFJzNQ=";
 
-            doCheck = false;
 
             meta = with nixpkgs.legacyPackages.${system}.lib; {
                 description = "Bob: The HTML and HTML fragment builder";
@@ -53,8 +67,23 @@
                 maintainers = with maintainers; [ "schukai GmbH" ];
               };    
 
+          };
+        });
+      
+      # Add dependencies that are only needed for development
+      devShells = forAllSystems (system:
+        let 
+          pkgs = nixpkgsFor.${system};
+        in
+        {
+          default = pkgs.mkShell {
+            buildInputs = with pkgs; [ go gopls gotools go-tools ];
+          };
+        });
 
+      # The default package for 'nix build'. This makes sense if the
+      # flake provides only one package or there is a clear "main"
+      # package.
+      defaultPackage = forAllSystems (system: self.packages.${system}.bob);
     };
-    defaultPackage = packages.app;
-  }));
 }

release.json

-{"version":"0.6.1"}
+{"version":"0.6.2"}