Try adding clang to the build dependencies

flake.lock

@@ -1,43 +1,6 @@
 {
   "nodes": {
-    "crane": {
-      "inputs": {
-        "flake-compat": "flake-compat",
-        "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs",
-        "rust-overlay": "rust-overlay"
-      },
-      "locked": {
-        "lastModified": 1679811681,
-        "narHash": "sha256-gc0lwuQxtKnUzdyfmHT6wKEuSdvn5KlRcXNkWT1/4hs=",
-        "owner": "ipetkov",
-        "repo": "crane",
-        "rev": "72fa29510a9ce61ea7455b4469507808684f5673",
-        "type": "github"
-      },
-      "original": {
-        "owner": "ipetkov",
-        "repo": "crane",
-        "type": "github"
-      }
-    },
     "flake-compat": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1673956053,
-        "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
-        "owner": "edolstra",
-        "repo": "flake-compat",
-        "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
-        "type": "github"
-      },
-      "original": {
-        "owner": "edolstra",
-        "repo": "flake-compat",
-        "type": "github"
-      }
-    },
-    "flake-compat_2": {
       "flake": false,
       "locked": {
         "lastModified": 1650374568,
@@ -54,21 +17,6 @@
       }
     },
     "flake-utils": {
-      "locked": {
-        "lastModified": 1676283394,
-        "narHash": "sha256-XX2f9c3iySLCw54rJ/CZs+ZK6IQy7GXNY4nSOyu2QG4=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "3db36a8b464d0c4532ba1c7dda728f4576d6d073",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "flake-utils_2": {
       "locked": {
         "lastModified": 1653893745,
         "narHash": "sha256-0jntwV3Z8//YwuOjzhV2sgJJPt+HY6KhU7VZUL0fKZQ=",
@@ -84,22 +32,6 @@
       }
     },
     "nixpkgs": {
-      "locked": {
-        "lastModified": 1677655566,
-        "narHash": "sha256-I8G8Lmpp3YduYl4+pkiIJFGT1WKw+8ZMH2QwANkTu2U=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "ae8bdd2de4c23b239b5a771501641d2ef5e027d0",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs_2": {
       "locked": {
         "lastModified": 1679748960,
         "narHash": "sha256-BP8XcYHyj1NxQi04RpyNW8e7KiXSoI+Fy1tXIK2GfdA=",
@@ -114,13 +46,13 @@
         "type": "indirect"
       }
     },
-    "nixpkgs_3": {
+    "nixpkgs_2": {
       "locked": {
-        "lastModified": 1654275867,
-        "narHash": "sha256-pt14ZE4jVPGvfB2NynGsl34pgXfOqum5YJNpDK4+b9E=",
+        "lastModified": 1672580127,
+        "narHash": "sha256-3lW3xZslREhJogoOkjeZtlBtvFMyxHku7I/9IVehhT8=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "7a20c208aacf4964c19186dcad51f89165dc7ed0",
+        "rev": "0874168639713f547c05947c76124f78441ea46c",
         "type": "github"
       },
       "original": {
@@ -132,10 +64,10 @@
     },
     "pkgs-cargo2nix": {
       "inputs": {
-        "flake-compat": "flake-compat_2",
-        "flake-utils": "flake-utils_2",
-        "nixpkgs": "nixpkgs_3",
-        "rust-overlay": "rust-overlay_2"
+        "flake-compat": "flake-compat",
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs_2",
+        "rust-overlay": "rust-overlay"
       },
       "locked": {
         "lastModified": 1655189312,
@@ -153,38 +85,12 @@
     },
     "root": {
       "inputs": {
-        "crane": "crane",
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs": "nixpkgs",
         "pkgs-cargo2nix": "pkgs-cargo2nix",
         "unstable": "unstable"
       }
     },
     "rust-overlay": {
-      "inputs": {
-        "flake-utils": [
-          "crane",
-          "flake-utils"
-        ],
-        "nixpkgs": [
-          "crane",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1677812689,
-        "narHash": "sha256-EakqhgRnjVeYJv5+BJx/NZ7/eFTMBxc4AhICUNquhUg=",
-        "owner": "oxalica",
-        "repo": "rust-overlay",
-        "rev": "e53e8853aa7b0688bc270e9e6a681d22e01cf299",
-        "type": "github"
-      },
-      "original": {
-        "owner": "oxalica",
-        "repo": "rust-overlay",
-        "type": "github"
-      }
-    },
-    "rust-overlay_2": {
       "inputs": {
         "flake-utils": [
           "pkgs-cargo2nix",

flake.nix

@@ -5,14 +5,12 @@
     nixpkgs.url = "nixpkgs/nixos-22.11";
     unstable.url = "nixpkgs/nixos-unstable";
     pkgs-cargo2nix.url = "github:cargo2nix/cargo2nix";
-    crane.url = "github:ipetkov/crane";
   };
 
-  outputs = { self, nixpkgs, unstable, pkgs-cargo2nix, crane, ... }:
+  outputs = { self, nixpkgs, unstable, pkgs-cargo2nix, ... }:
     let 
       version = builtins.string 0 8 self.lastModifiedDate;
       supportedSystems = [ "x86_64-linux" ];
-      craneLib = crane.lib."x86_64-linux";
     in
     {
       devShell."x86_64-linux" =
@@ -40,16 +38,49 @@
             pkgs.pkg-config
             pkgs.sqlite
             pkgs.rustup
+            pkgs.crate2nix
           ];
           LIBCLANG_PATH="${pkgs.llvmPackages.libclang.lib}/lib";
         };
-        packages."x86_64-linux" = {
-          kifu-core = craneLib.buildPackage {
-            src = craneLib.cleanCargoSource (craneLib.path ./kifu/kifu-core);
+        packages."x86_64-linux" =
+          let
+            pkgs = import nixpkgs { system = "x86_64-linux"; };
+            customBuildInfo = pkgs: pkgs.buildRustCrate.override {
+              defaultCrateOverrides = pkgs.defaultCrateOverrides // {
+                gobject-sys = attrs: {
+                  nativeBuildInputs = [
+                    pkgs.pkg-config
+                    pkgs.wrapGAppsHook4
+                    pkgs.gtk4
+                    pkgs.glib
+                    pkgs.clang
+                  ];
                 };
-          kifu-gtk = craneLib.buildPackage {
-            src = craneLib.cleanCargoSource (craneLib.path ./kifu/kifu-gtk);
+                graphene-sys = attrs: {
+                  nativeBuildInputs = [
+                    pkgs.pkg-config
+                    pkgs.wrapGAppsHook4
+                    pkgs.gtk4
+                    pkgs.glib
+                    pkgs.clang
+                  ];
                 };
+                cairo-sys = attrs: {
+                  nativeBuildInputs = [
+                    pkgs.pkg-config
+                    pkgs.wrapGAppsHook4
+                    pkgs.gtk4
+                    pkgs.glib
+                    pkgs.clang
+                  ];
+                };
+              };
+            };
+          in {
+            kifu-gtk = (import ./kifu/kifu-gtk/Cargo.nix {
+              inherit pkgs;
+              buildRustCrateForPkgs = customBuildInfo;
+            }).rootCrate.build;
           };
     };
 }