refactor(flake.nix): Use flake-parts to simplify flake.nix

checks/default.nix

@@ -7,76 +7,77 @@
       pkgs,
       ...
     }:
-    let
-      mkLint =
-        {
-          name,
-          fileset,
-          checkInputs ? [ ],
-          script,
-        }:
-        pkgs.stdenvNoCC.mkDerivation {
-          inherit name;
-
-          src = lib.fileset.toSource {
-            root = ../.;
-            fileset = lib.fileset.difference fileset (
-              lib.fileset.fileFilter (
-                file: file.type != "regular" || file.name == "hardware-configuration.nix"
-              ) ../.
-            );
-          };
-
-          checkInputs = [ pkgs.nushell ] ++ checkInputs;
-
-          checkPhase = ''
-            nu -c '${script}' | tee $out
-          '';
-
-          dontPatch = true;
-          dontConfigure = true;
-          dontBuild = true;
-          dontInstall = true;
-          dontFixup = true;
-          doCheck = true;
-        };
-    in
     {
-      checks = {
+      checks =
-        nix = mkLint {
+        let
-          name = "nix-lints";
+          mkLint =
-          fileset = lib.fileset.fileFilter (file: file.hasExt "nix") ../.;
+            {
+              name,
+              fileset,
+              checkInputs ? [ ],
+              script,
+            }:
+            pkgs.stdenvNoCC.mkDerivation {
+              inherit name;
 
-          checkInputs = lib.attrValues {
+              src = lib.fileset.toSource {
-            inherit (pkgs) deadnix nixfmt-rfc-style;
+                root = ../.;
+                fileset = lib.fileset.difference fileset (
+                  lib.fileset.fileFilter (
+                    file: file.type != "regular" || file.name == "hardware-configuration.nix"
+                  ) ../.
+                );
+              };
 
-            statix = pkgs.statix.overrideAttrs (old: {
+              checkInputs = [ pkgs.nushell ] ++ checkInputs;
-              patches = old.patches ++ [
+
-                (pkgs.fetchpatch {
+              checkPhase = ''
-                  url = "https://github.com/oppiliappan/statix/commit/925dec39bb705acbbe77178b4d658fe1b752abbb.patch";
+                nu -c '${script}' | tee $out
-                  hash = "sha256-0wacO6wuYJ4ufN9PGucRVJucFdFFNF+NoHYIrLXsCWs=";
+              '';
-                })
+
-              ];
+              dontPatch = true;
-            });
+              dontConfigure = true;
+              dontBuild = true;
+              dontInstall = true;
+              dontFixup = true;
+              doCheck = true;
+            };
+        in
+        {
+          nix = mkLint {
+            name = "nix-lints";
+            fileset = lib.fileset.fileFilter (file: file.hasExt "nix") ../.;
+
+            checkInputs = lib.attrValues {
+              inherit (pkgs) deadnix nixfmt-rfc-style;
+
+              statix = pkgs.statix.overrideAttrs (old: {
+                patches = old.patches ++ [
+                  (pkgs.fetchpatch {
+                    url = "https://github.com/oppiliappan/statix/commit/925dec39bb705acbbe77178b4d658fe1b752abbb.patch";
+                    hash = "sha256-0wacO6wuYJ4ufN9PGucRVJucFdFFNF+NoHYIrLXsCWs=";
+                  })
+                ];
+              });
+            };
+
+            script = /* bash */ ''
+              statix check **/*.nix
+              deadnix --fail **/*.nix
+              nixfmt --check --strict **/*.nix
+            '';
           };
 
-          script = /* bash */ ''
+          lockfile = mkLint {
-            statix check **/*.nix
+            name = "nix-lockfile";
-            deadnix --fail **/*.nix
+            fileset = ../flake.lock;
-            nixfmt --check --strict **/*.nix
+            checkInputs = lib.attrValues { inherit (inputs'.flint.packages) flint; };
-          '';
-        };
 
-        lockfile = mkLint {
+            script = /* bash */ ''
-          name = "nix-lockfile";
+              flint --fail-if-multiple-versions
-          fileset = ../flake.lock;
+            '';
-          checkInputs = lib.attrValues { inherit (inputs'.flint.packages) flint; };
+          };
-
+        }
-          script = /* bash */ ''
+        // self.nixosConfigurations.hetzner-1.config.serviceTests;
-            flint --fail-if-multiple-versions
-          '';
-        };
-      }
-      // self.nixosConfigurations.hetzner-1.config.serviceTests;
     };
 }