Switch to flake.parts

flake.nix

@@ -1,46 +1,150 @@
 {
-  description = "System flake for Linode NixOS server";
-  # Want to convert this to Flake Parts flake so I can use their special features
-  nixConfig = {
-    extra-substituters = "https://srid.cachix.org";
-    extra-trusted-public-keys = "srid.cachix.org-1:3clnql5gjbJNEvhA/WQp7nrZlBptwpXnUk6JAv8aB2M=";
-  };
+  description = "Flake.parts System flake for Linode NixOS server";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    flake-parts.url = "github:hercules-ci/flake-parts";
 
-    emanote.url = "github:srid/emanote";
-    emanote.inputs.emanote-template.follows = "";
-    flake-parts.follows = "emanote/flake-parts";
-    # nixpkgs.follows = "emanote/nixpkgs";
-
-    osds-site.url = "git+https://git.ewanick.com/bill/osds-site";
+    git-hooks-nix.url = "github:cachix/git-hooks.nix";
+    git-hooks-nix.inputs.nixpkgs.follows = "nixpkgs";
+    treefmt-nix.url = "github:numtide/treefmt-nix";
+    treefmt-nix.inputs.nixpkgs.follows = "nixpkgs";
   };
 
-  outputs =
-    inputs@{
-      self,
-      nixpkgs,
-      emanote,
-      osds-site,
-      ...
-    }:
-    {
-      nixosConfigurations.linode-nixos = nixpkgs.lib.nixosSystem {
-        specialArgs = { inherit inputs emanote; };
-        modules = [
-          {
-            nixpkgs.config.permittedInsecurePackages = [
-              "jitsi-meet-1.0.8792"
+  outputs = inputs @ {flake-parts, ...}:
+    flake-parts.lib.mkFlake {inherit inputs;} {
+      imports = [
+        # To import a flake module
+        # 1. Add foo to inputs
+        # 2. Add foo as a parameter to the outputs function
+        # 3. Add here: foo.flakeModule
+        inputs.git-hooks-nix.flakeModule
+        inputs.treefmt-nix.flakeModule
+      ];
+
+      systems = [
+        "x86_64-linux"
+        # "aarch64-linux"
+        # "aarch64-darwin"
+        # "x86_64-darwin"
+      ];
+
+      flake = {
+        # The usual flake attributes can be defined here, including system-
+        # agnostic ones like nixosModule and system-enumerating ones, although
+        # those are more easily expressed in perSystem.
+
+        nixosConfigurations = {
+          linode-nixos = inputs.nixpkgs.lib.nixosSystem {
+            # system is not needed with freshly generated hardware-configuration.nix
+            # system = "x86_64-linux"; # or set nixpkgs.hostPlatform in a module.
+            specialArgs = {inherit inputs;};
+            modules = [
+              {
+                nixpkgs.config.permittedInsecurePackages = [
+                  "jitsi-meet-1.0.8792"
+                ];
+              }
+
+              ./server-config/configuration.nix
+
+              ./nixos-apps
             ];
-          }
+          };
+        };
+      };
 
-          ./server-config/configuration.nix
+      perSystem = {
+        config,
+        self',
+        inputs',
+        pkgs,
+        system,
+        ...
+      }: {
+        # Per-system attributes can be defined here. The self' and inputs'
+        # module parameters provide easy access to attributes of the same
+        # system.
 
-          ./nixos-apps
+        # Equivalent to  inputs'.nixpkgs.legacyPackages.hello;
+        # packages.default = pkgs.hello;
 
-          # osds-site
-        ];
+        devShells.default = let
+          # https://downloads.haskell.org/~ghc/9.10.3/docs/users_guide/index.html
+          ghc' = pkgs.haskell.packages.ghc9103.ghcWithHoogle (
+            self:
+              with self; [
+                relude
+                split
+                aeson
+                random
+                neat-interpolation
+
+                # maths
+                primes
+                arithmoi
+                parallel
+
+                # graphing libraries!
+                Chart
+                Chart-cairo
+              ]
+          );
+
+          clean = pkgs.writeShellScriptBin "clean" ''
+            # Delete executables
+              find . -type f -executable -not -path '*/.git/*' -delete
+
+            # Delete all Haskell IR files
+              find . -type f -name '*.hi' -delete
+              find . -type f -name '*.o' -delete
+
+            # Delete any test graphs created
+              find . -type f -name '*.png' -delete
+          '';
+        in
+          pkgs.mkShell {
+            packages = with pkgs; [
+              cowsay
+
+              alejandra
+
+              ghc'
+              clean
+
+              haskell-language-server
+              ghcid
+              hlint
+
+              kotlin
+            ];
+
+            shellHook = ''
+              ${config.pre-commit.installationScript}
+
+              echo Hello alice
+            '';
+          };
+
+        pre-commit = {
+          settings.hooks = {
+            alejandra.enable = true;
+            mdformat.enable = true;
+            prettier.enable = true;
+            prettier.excludes = [".*\.md" "flake.lock"];
+            stylish-haskell.enable = true;
+          };
+        };
+
+        treefmt = {
+          programs = {
+            alejandra.enable = true;
+            mdformat.enable = true;
+            prettier.enable = true;
+            prettier.excludes = ["*.md"];
+            stylish-haskell.enable = true;
+          };
+        };
       };
     };
 }