overlay: Add temporary hack until Python on nixos-unstable is unfucked

overlays/default.nix

@@ -1,4 +1,4 @@
-_final: prev: {
+final: prev: {
   backscrub = prev.pkgs.callPackage ../pkgs/backscrub {
     inherit (prev.pkgs)
       gcc
@@ -19,4 +19,38 @@ _final: prev: {
   );
 
   git-repo-go = prev.pkgs.callPackage ../pkgs/git-repo-go { };
+
+  # Temporary until nixos-unstable is fixed for Python 3.12
+  python312 = prev.python312.override {
+    packageOverrides = _finalPkgs: prevPkgs: {
+      nose = prevPkgs.nose.overrideAttrs {
+        patches = [
+          (final.fetchpatch2 {
+            url = "https://github.com/NixOS/nixpkgs/raw/599e471d78801f95ccd2c424a37e76ce177e50b9/pkgs/development/python-modules/nose/0001-nose-python-3.12-fixes.patch";
+            hash = "sha256-aePOvO5+TJL4JzXywc7rEiYRzfdObSI9fg9Cfrp+e2o=";
+          })
+        ];
+      };
+      wxpython = prevPkgs.wxpython.overrideAttrs {
+        disabled = false;
+        postPatch =
+          let
+            waf_2_0_25 = prev.fetchurl {
+              url = "https://waf.io/waf-2.0.25";
+              hash = "sha256-IRmc0iDM9gQ0Ez4f0quMjlIXw3mRmcgnIlQ5cNyOONU=";
+            };
+          in
+          ''
+            cp ${waf_2_0_25} bin/waf-2.0.25
+            chmod +x bin/waf-2.0.25
+            substituteInPlace build.py \
+              --replace-fail "wafCurrentVersion = '2.0.24'" "wafCurrentVersion = '2.0.25'" \
+              --replace-fail "wafMD5 = '698f382cca34a08323670f34830325c4'" "wafMD5 = 'a4b1c34a03d594e5744f9e42f80d969d'" \
+              --replace-fail "distutils.dep_util" "setuptools.modified"
+          '';
+      };
+      python-hglib = prevPkgs.python-hglib.overrideAttrs { dontUseSetuptoolsCheck = "1"; };
+    };
+  };
+  python312Packages = final.python312.pkgs;
 }