diff --git a/nixos/modules/tasks/filesystems/bcachefs.nix b/nixos/modules/tasks/filesystems/bcachefs.nix
index 851c0978133..19ef188ce78 100644
--- a/nixos/modules/tasks/filesystems/bcachefs.nix
+++ b/nixos/modules/tasks/filesystems/bcachefs.nix
@@ -6,6 +6,15 @@ let
 
   bootFs = filterAttrs (n: fs: (fs.fsType == "bcachefs") && (utils.fsNeededForBoot fs)) config.fileSystems;
 
+  mountCommand = pkgs.runCommand "mount.bcachefs" {} ''
+    mkdir -p $out/bin
+    cat > $out/bin/mount.bcachefs <<EOF
+    #!/bin/sh
+    exec "/bin/bcachefs" mount "\$@"
+    EOF
+    chmod +x $out/bin/mount.bcachefs
+  '';
+
   commonFunctions = ''
     prompt() {
         local name="$1"
@@ -58,13 +67,12 @@ in
 
       boot.initrd.systemd.extraBin = {
         "bcachefs" = "${pkgs.bcachefs-tools}/bin/bcachefs";
-        "mount.bcachefs" = pkgs.runCommand "mount.bcachefs" {} ''
-          cp -pdv ${pkgs.bcachefs-tools}/bin/.mount.bcachefs.sh-wrapped $out
-        '';
+        "mount.bcachefs" = "${mountCommand}/bin/mount.bcachefs";
       };
 
       boot.initrd.extraUtilsCommands = lib.mkIf (!config.boot.initrd.systemd.enable) ''
         copy_bin_and_libs ${pkgs.bcachefs-tools}/bin/bcachefs
+        copy_bin_and_libs ${mountCommand}/bin/mount.bcachefs
       '';
       boot.initrd.extraUtilsCommandsTest = ''
         $out/bin/bcachefs version
diff --git a/nixos/tests/bcachefs.nix b/nixos/tests/bcachefs.nix
index 68ac49d0a6a..0385e098997 100644
--- a/nixos/tests/bcachefs.nix
+++ b/nixos/tests/bcachefs.nix
@@ -23,7 +23,7 @@ import ./make-test-python.nix ({ pkgs, ... }: {
         "keyctl link @u @s",
         "echo password | bcachefs format --encrypted --metadata_replicas 2 --label vtest /dev/vdb1 /dev/vdb2",
         "echo password | bcachefs unlock /dev/vdb1",
-        "mount -t bcachefs /dev/vdb1:/dev/vdb2 /tmp/mnt",
+        "echo password | mount -t bcachefs /dev/vdb1:/dev/vdb2 /tmp/mnt",
         "udevadm settle",
         "bcachefs fs usage /tmp/mnt",
         "umount /tmp/mnt",
diff --git a/nixos/tests/installer.nix b/nixos/tests/installer.nix
index 1f575f63bee..4f4b9151884 100644
--- a/nixos/tests/installer.nix
+++ b/nixos/tests/installer.nix
@@ -834,7 +834,7 @@ in {
         "keyctl link @u @s",
         "echo password | mkfs.bcachefs -L root --encrypted /dev/vda3",
         "echo password | bcachefs unlock /dev/vda3",
-        "mount -t bcachefs /dev/vda3 /mnt",
+        "echo password | mount -t bcachefs /dev/vda3 /mnt",
         "mkfs.ext3 -L boot /dev/vda1",
         "mkdir -p /mnt/boot",
         "mount /dev/vda1 /mnt/boot",
diff --git a/pkgs/os-specific/linux/kernel/linux-testing-bcachefs.nix b/pkgs/os-specific/linux/kernel/linux-testing-bcachefs.nix
index b6f897b024e..dfe5beb55f6 100644
--- a/pkgs/os-specific/linux/kernel/linux-testing-bcachefs.nix
+++ b/pkgs/os-specific/linux/kernel/linux-testing-bcachefs.nix
@@ -2,10 +2,12 @@
 , stdenv
 , fetchpatch
 , kernel
-, commitDate ? "2023-02-01"
-, currentCommit ? "65960c284ad149cc4bfbd64f21e6889c1e3d1c5f"
-, diffHash ? "sha256-4wpY3aYZ93OXSU4wmQs9K62nPyIzjKu4RBQTwksmyyk="
-
+, commitDate ? "2023-06-28"
+# bcachefs-tools stores the expected-revision in:
+#   https://evilpiepirate.org/git/bcachefs-tools.git/tree/.bcachefs_revision
+# but this does not means that it'll be the latest-compatible revision
+, currentCommit ? "84f132d5696138bb038d2dc8f1162d2fab5ac832"
+, diffHash ? "sha256-RaBWBU7rXjJFb1euFAFBHWCBQAG7npaCodjp/vMYpyw="
 , kernelPatches # must always be defined in bcachefs' all-packages.nix entry because it's also a top-level attribute supplied by callPackage
 , argsOverride ? {}
 , ...
diff --git a/pkgs/tools/filesystems/bcachefs-tools/Cargo.lock b/pkgs/tools/filesystems/bcachefs-tools/Cargo.lock
new file mode 100644
index 00000000000..c4dd7f58c70
--- /dev/null
+++ b/pkgs/tools/filesystems/bcachefs-tools/Cargo.lock
@@ -0,0 +1,998 @@
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+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
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+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
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+
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+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
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+checksum = "c1040f221285e17ebccbc2591ffdc2d44ee1f9186324dd3e84e99ac68d699c45"
+
+[[package]]
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+version = "0.42.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "628bfdf232daa22b0d64fdb62b09fcc36bb01f05a3939e20ab73aaf9470d0463"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.42.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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diff --git a/pkgs/tools/filesystems/bcachefs-tools/default.nix b/pkgs/tools/filesystems/bcachefs-tools/default.nix
index f96ee77d933..81152d144aa 100644
--- a/pkgs/tools/filesystems/bcachefs-tools/default.nix
+++ b/pkgs/tools/filesystems/bcachefs-tools/default.nix
@@ -2,9 +2,7 @@
 , stdenv
 , fetchFromGitHub
 , pkg-config
-, docutils
 , libuuid
-, libscrypt
 , libsodium
 , keyutils
 , liburcu
@@ -12,67 +10,89 @@
 , libaio
 , zstd
 , lz4
-, python3Packages
-, util-linux
+, attr
 , udev
 , valgrind
 , nixosTests
-, makeWrapper
-, getopt
 , fuse3
+, cargo
+, rustc
+, coreutils
+, rustPlatform
+, makeWrapper
 , fuseSupport ? false
 }:
-
-stdenv.mkDerivation {
+let
+  rev = "cfa816bf3f823a3bedfedd8e214ea929c5c755fe";
+in stdenv.mkDerivation {
   pname = "bcachefs-tools";
-  version = "unstable-2023-01-31";
+  version = "unstable-2023-06-28";
 
   src = fetchFromGitHub {
     owner = "koverstreet";
     repo = "bcachefs-tools";
-    rev = "3c39b422acd3346321185be0ce263809e2a9a23f";
-    hash = "sha256-2ci/m4JfodLiPoWfP+QCEqlk0k48zq3mKb8Pdrtln0o=";
+    inherit rev;
+    hash = "sha256-XgXUwyZV5N8buYTuiu1Y1ZU3uHXjZ/OZ1kbZ9d6Rt5I=";
   };
 
-  postPatch = ''
-    patchShebangs .
-    substituteInPlace Makefile \
-      --replace "pytest-3" "pytest --verbose" \
-      --replace "INITRAMFS_DIR=/etc/initramfs-tools" \
-                "INITRAMFS_DIR=${placeholder "out"}/etc/initramfs-tools"
-  '';
+  # errors on fsck_err function. Maybe miss-detection?
+  NIX_CFLAGS_COMPILE = "-Wno-error=format-security";
 
   nativeBuildInputs = [
-    pkg-config docutils python3Packages.python makeWrapper
+    pkg-config
+    cargo
+    rustc
+    rustPlatform.cargoSetupHook
+    rustPlatform.bindgenHook
+    makeWrapper
   ];
 
+  cargoRoot = "rust-src";
+  cargoDeps = rustPlatform.importCargoLock {
+    lockFile = ./Cargo.lock;
+    outputHashes = {
+      "bindgen-0.64.0" = "sha256-GNG8as33HLRYJGYe0nw6qBzq86aHiGonyynEM7gaEE4=";
+    };
+  };
+
   buildInputs = [
-    libuuid libscrypt libsodium keyutils liburcu zlib libaio
-    zstd lz4 python3Packages.pytest udev valgrind
+    libaio
+    keyutils
+    lz4
+
+    libsodium
+    liburcu
+    libuuid
+    zstd
+    zlib
+    attr
+    udev
   ] ++ lib.optional fuseSupport fuse3;
 
   doCheck = false; # needs bcachefs module loaded on builder
   checkFlags = [ "BCACHEFS_TEST_USE_VALGRIND=no" ];
   nativeCheckInputs = [ valgrind ];
 
+  makeFlags = [
+    "PREFIX=${placeholder "out"}"
+    "VERSION=${lib.strings.substring 0 7 rev}"
+    "INITRAMFS_DIR=${placeholder "out"}/etc/initramfs-tools"
+  ];
+
   preCheck = lib.optionalString fuseSupport ''
     rm tests/test_fuse.py
   '';
 
-  # this symlink is needed for mount -t bcachefs to work
-  postFixup = ''
-    ln -s $out/bin/mount.bcachefs.sh $out/bin/mount.bcachefs
-    wrapProgram $out/bin/mount.bcachefs.sh \
-      --prefix PATH : ${lib.makeBinPath [ getopt util-linux ]}
-  '';
-
-  installFlags = [ "PREFIX=${placeholder "out"}" ];
-
   passthru.tests = {
     smoke-test = nixosTests.bcachefs;
     inherit (nixosTests.installer) bcachefsSimple bcachefsEncrypted bcachefsMulti;
   };
 
+  postFixup = ''
+    wrapProgram $out/bin/mount.bcachefs \
+      --prefix PATH : ${lib.makeBinPath [ coreutils ]}
+  '';
+
   enableParallelBuilding = true;
 
   meta = with lib; {
diff --git a/pkgs/top-level/linux-kernels.nix b/pkgs/top-level/linux-kernels.nix
index 3f448f4cdeb..9beff067127 100644
--- a/pkgs/top-level/linux-kernels.nix
+++ b/pkgs/top-level/linux-kernels.nix
@@ -205,16 +205,8 @@ in {
 
     linux_testing_bcachefs = callPackage ../os-specific/linux/kernel/linux-testing-bcachefs.nix {
       # Pinned on the last version which Kent's commits can be cleany rebased up.
-      kernel = buildLinux rec {
-        version = "6.1.3";
-        modDirVersion = lib.versions.pad 3 version;
-        extraMeta.branch = lib.versions.majorMinor version;
-        src = fetchurl {
-          url = "mirror://kernel/linux/kernel/v6.x/linux-${version}.tar.xz";
-          hash = "sha256-bcia56dRPkM8WXxzRu1/9L/RFepDo7XiemvbOMVYAxc=";
-        };
-      };
-      kernelPatches = linux_6_1.kernelPatches;
+      kernel = linux_6_4;
+      kernelPatches = linux_6_4.kernelPatches;
    };
 
     linux_hardkernel_4_14 = callPackage ../os-specific/linux/kernel/linux-hardkernel-4.14.nix {