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nix: Build kernel module

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This commit is contained in:
Will Fancher 2025-09-27 03:57:32 -04:00
parent 365c84997f
commit d3ced65a68
3 changed files with 87 additions and 1 deletions
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13
crane-build.nix
View File

@ -74,6 +74,15 @@ let
// {
inherit cargoArtifacts;
outputs = [
"out"
"dkms"
];
makeFlags = args.makeFlags ++ [
"DKMSDIR=${placeholder "dkms"}"
];
enableParallelBuilding = true;
buildPhaseCargoCommand = ''
make ''${enableParallelBuilding:+-j''${NIX_BUILD_CORES}} $makeFlags
@ -81,13 +90,15 @@ let
doNotPostBuildInstallCargoBinaries = true;
enableParallelInstalling = true;
installPhaseCommand = ''
make ''${enableParallelInstalling:+-j''${NIX_BUILD_CORES}} $makeFlags install
make ''${enableParallelInstalling:+-j''${NIX_BUILD_CORES}} $makeFlags install install_dkms
'';
doInstallCheck = true;
nativeInstallCheckInputs = [ versionCheckHook ];
versionCheckProgramArg = "version";
passthru.kernelModule = import ./module-build.nix package;
meta = {
description = "Userspace tools for bcachefs";
license = lib.licenses.gpl2Only;

8
flake.nix
View File

@ -93,6 +93,12 @@
crossPackages = {
"bcachefs-tools" = craneBuild.package;
"bcachefs-tools-fuse" = craneBuild.packageFuse;
"bcachefs-module-linux-latest" =
pkgs'.linuxPackages_latest.callPackage craneBuild.package.kernelModule
{ };
"bcachefs-module-linux-testing" =
pkgs'.linuxPackages_testing.callPackage craneBuild.package.kernelModule
{ };
};
in
(withCrossName crossPackages) // lib.optionalAttrs (crossSystem == localSystem) crossPackages;
@ -109,6 +115,8 @@
bcachefs-tools-aarch64-linux
bcachefs-tools-fuse
bcachefs-tools-fuse-i686-linux
bcachefs-module-linux-latest
bcachefs-module-linux-testing
;
inherit (pkgs.callPackage ./crane-build.nix { inherit crane version; })
# cargo-clippy

67
module-build.nix Normal file
View File

@ -0,0 +1,67 @@
/*
Copyright (c) 2003-2025 Eelco Dolstra and the Nixpkgs/NixOS contributors
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
bcachefs-tools:
{
lib,
stdenv,
kernelModuleMakeFlags,
kernel,
}:
stdenv.mkDerivation {
pname = "bcachefs";
version = "${kernel.version}-${bcachefs-tools.version}";
__structuredAttrs = true;
src = bcachefs-tools.dkms;
nativeBuildInputs = kernel.moduleBuildDependencies;
enableParallelBuilding = true;
makeFlags = kernelModuleMakeFlags ++ [
"KDIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
"INSTALL_MOD_PATH=${placeholder "out"}"
];
installPhase = ''
runHook preInstall
make -C ${kernel.dev}/lib/modules/${kernel.modDirVersion}/build M=$(pwd) modules_install "''${makeFlags[@]}" "''${installFlags[@]}"
runHook postInstall
'';
passthru = {
inherit (bcachefs-tools.passthru) tests;
};
meta = {
description = "out-of-tree bcachefs kernel module";
inherit (bcachefs-tools.meta)
license
maintainers
;
};
}