Revert "Revert "Merge pull request 'Add bcachefs' (#197) from add-bcachefs-kernel into main""

This reverts commit b322793444.

default.nix

@@ -81,3 +81,10 @@ in
     }
     else {}
   )
+  // (
+    if pkgs.system == "x86_64-linux"
+    then {
+      inherit (pkgsWithOverlay) linux-bcachefs;
+    }
+    else {}
+  )

flake.nix

@@ -124,6 +124,13 @@
               inherit (pkgs) vf2Kernel;
             }
             else {}
+          )
+          // (
+            if system == "x86_64-linux"
+            then {
+              inherit (pkgs) linux-bcachefs;
+            }
+            else {}
           );
 
         modules = import ./modules;

linux/bcachefs/default.nix

@@ -0,0 +1,33 @@
+{
+  lib,
+  fetchFromGitHub,
+  buildLinux,
+  ...
+} @ args: let
+  modDirVersion = "6.3.0";
+  source = builtins.fromJSON (builtins.readFile ./source.json);
+in
+  buildLinux (args
+    // {
+      inherit modDirVersion;
+      version = "6.3.0+${source.rev}";
+      src = fetchFromGitHub {
+        owner = "koverstreet";
+        repo = "bcachefs";
+        inherit (source) rev sha256;
+      };
+      structuredExtraConfig = with lib.kernel; {
+        BCACHEFS_FS = module;
+        BCACHEFS_DEBUG = yes;
+        KALLSYMS = yes;
+        KALLSYMS_ALL = yes;
+        DEBUG_FS = yes;
+        DYNAMIC_FTRACE = yes;
+        FTRACE = yes;
+      };
+      passthru.updateScript = [
+        ../../scripts/update-git.sh
+        "github.com/koverstreet/bcachefs"
+        "linux/bcachefs/source.json"
+      ];
+    })

linux/bcachefs/source.json

@@ -0,0 +1,11 @@
+{
+  "url": "https://github.com/koverstreet/bcachefs",
+  "rev": "799716df00709f7480f575e8fd626915bafba006",
+  "date": "2023-05-14T23:01:14-04:00",
+  "path": "/nix/store/mx6zdja6ii9g3pd7vzv9k4rnm4p4spqm-bcachefs",
+  "sha256": "0zid3g15034nd5cwmn233kn6fjyphkax2nklzhb46sz2283gzkiv",
+  "fetchLFS": false,
+  "fetchSubmodules": false,
+  "deepClone": false,
+  "leaveDotGit": false
+}

overlay.nix

@@ -87,6 +87,7 @@ system: self: super: let
       fcitx5 = super.fcitx5.overrideAttrs (_: {
         src = self.callPackage ./i18n/fcitx5/patched-source.nix {inherit (super) fcitx5;};
       });
+      linux-bcachefs = self.callPackage ./linux/bcachefs {kernelPatches = [];};
     })
     riscv-overlay
   ];