build(nix): use flake-parts

flake.lock

@@ -1,12 +1,48 @@
 {
   "nodes": {
+    "devshell": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1682700442,
+        "narHash": "sha256-qjaAAcCYgp1pBBG7mY9z95ODUBZMtUpf0Qp3Gt/Wha0=",
+        "owner": "numtide",
+        "repo": "devshell",
+        "rev": "fb6673fe9fe4409e3f43ca86968261e970918a83",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "devshell",
+        "type": "github"
+      }
+    },
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1682984683,
+        "narHash": "sha256-fSMthG+tp60AHhNmaHc4StT3ltfHkQsJtN8GhfLWmtI=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "86684881e184f41aa322e653880e497b66429f3e",
+        "type": "github"
+      },
+      "original": {
+        "id": "flake-parts",
+        "type": "indirect"
+      }
+    },
     "flake-utils": {
       "locked": {
-        "lastModified": 1667395993,
+        "lastModified": 1642700792,
-        "narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
+        "narHash": "sha256-XqHrk7hFb+zBvRg6Ghl+AZDq03ov6OshJLiSWOoX5es=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
+        "rev": "846b2ae0fc4cc943637d3d1def4454213e203cba",
         "type": "github"
       },
       "original": {
@@ -17,24 +53,59 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1673455360,
+        "lastModified": 1677383253,
-        "narHash": "sha256-oUR5O9QlBt1AnxDfXrHQZTpuOrYbRY8F+WZTpx02FA0=",
+        "narHash": "sha256-UfpzWfSxkfXHnb4boXZNaKsAcUrZT9Hw+tao1oZxd08=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "a33466f87ece61963b6d71c2fa1c8c51f35f23ad",
+        "rev": "9952d6bc395f5841262b006fbace8dd7e143b634",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "master",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "dir": "lib",
+        "lastModified": 1682879489,
+        "narHash": "sha256-sASwo8gBt7JDnOOstnps90K1wxmVfyhsTPPNTGBPjjg=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "da45bf6ec7bbcc5d1e14d3795c025199f28e0de0",
+        "type": "github"
+      },
+      "original": {
+        "dir": "lib",
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1683286087,
+        "narHash": "sha256-xseOd7W7xwF5GOF2RW8qhjmVGrKoBz+caBlreaNzoeI=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "3e313808bd2e0a0669430787fb22e43b2f4bf8bf",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
     "root": {
       "inputs": {
-        "flake-utils": "flake-utils",
+        "devshell": "devshell",
-        "nixpkgs": "nixpkgs"
+        "flake-parts": "flake-parts",
+        "nixpkgs": "nixpkgs_2"
       }
     }
   },

flake.nix

@@ -1,23 +1,22 @@
 {
-  inputs = {
+  inputs.devshell.url = "github:numtide/devshell";
-    nixpkgs.url = "github:NixOS/nixpkgs/master";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
-    flake-utils.url = "github:numtide/flake-utils";
-  };
 
-  outputs = { self, nixpkgs, flake-utils }:
+  outputs = inputs@{ flake-parts, ... }:
-    flake-utils.lib.eachDefaultSystem (system:
+    flake-parts.lib.mkFlake { inherit inputs; } {
-      let
+      imports = [ inputs.devshell.flakeModule ];
-        pkgs = nixpkgs.legacyPackages.${system};
+
-      in
+      systems = [ "x86_64-linux" ];
-      {
+
-        devShell = with pkgs; pkgs.mkShell {
+      perSystem = { config, self', inputs', pkgs, system, ... }: {
-          buildInputs = [
+        formatter = pkgs.nixpkgs-fmt;
+
+        devshells.default = {
+          packages = with pkgs; [
             just
-            python39Packages.rst2pdf
+            python310Packages.rst2pdf
-            pdfpc
-            libcanberra
-            libcanberra-gtk3
           ];
         };
-      });
+      };
+    };
 }