Merge pull request #272 from tmuehlbacher/flake-overhaul

Flake overhaul

5 files changed, 176 insertions, 73 deletions

diff --git a/.editorconfig b/.editorconfig
index 86ba2134..58738895 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -1,6 +1,26 @@
-indent_style = tab
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
 indent_size = 8
+indent_style = tab
+insert_final_newline = true
+max_line_length = 80
+tab_width = 8
+trim_trailing_whitespace = true
+
+[.git/**]
+max_line_length = 72
 
 [*.nix]
 indent_style = space
 indent_size = 2
+
+[Cargo.toml]
+indent_style = space
+indent_size = 4
+
+[*.rs]
+indent_style = space
+indent_size = 4
diff --git a/build.nix b/build.nix
index 4a4b7b06..4927519c 100644
--- a/build.nix
+++ b/build.nix
@@ -1,12 +1,31 @@
-{ lib, stdenv, pkg-config, attr, libuuid, libsodium, keyutils, liburcu, zlib
-, libaio, udev, zstd, lz4, nix-gitignore, rustPlatform, rustc, cargo, fuse3
-, fuseSupport ? false, }:
+{
+  lib,
+  stdenv,
+  pkg-config,
+  attr,
+  libuuid,
+  libsodium,
+  keyutils,
+  liburcu,
+  zlib,
+  libaio,
+  udev,
+  zstd,
+  lz4,
+  nix-gitignore,
+  rustPlatform,
+  rustc,
+  cargo,
+  fuse3,
+  fuseSupport ? false,
+}:
 let
   src = nix-gitignore.gitignoreSource [ ] ./.;
 
   commit = lib.strings.substring 0 7 (builtins.readFile ./.bcachefs_revision);
   version = "git-${commit}";
-in stdenv.mkDerivation {
+in
+stdenv.mkDerivation {
   inherit src version;
 
   pname = "bcachefs-tools";
@@ -39,11 +58,13 @@ in stdenv.mkDerivation {
   # when git-based crates are updated, run:
   # nix run github:Mic92/nix-update -- --version=skip --flake default
   # to update the hashes
-  cargoDeps = rustPlatform.importCargoLock {
-    lockFile = "${src}/Cargo.lock";
-  };
+  cargoDeps = rustPlatform.importCargoLock { lockFile = "${src}/Cargo.lock"; };
 
-  makeFlags = [ "DESTDIR=${placeholder "out"}" "PREFIX=" "VERSION=${commit}" ];
+  makeFlags = [
+    "DESTDIR=${placeholder "out"}"
+    "PREFIX="
+    "VERSION=${commit}"
+  ];
 
   dontStrip = true;
   checkPhase = "./target/release/bcachefs version";
diff --git a/default.nix b/default.nix
index 80aeb433..6466507b 100644
--- a/default.nix
+++ b/default.nix
@@ -1,6 +1,9 @@
-(import (let lock = builtins.fromJSON (builtins.readFile ./flake.lock);
-in fetchTarball {
-  url =
-    "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
-  sha256 = lock.nodes.flake-compat.locked.narHash;
-}) { src = ./.; }).defaultNix
+(import (
+  let
+    lock = builtins.fromJSON (builtins.readFile ./flake.lock);
+  in
+  fetchTarball {
+    url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
+    sha256 = lock.nodes.flake-compat.locked.narHash;
+  }
+) { src = ./.; }).defaultNix
diff --git a/flake.lock b/flake.lock
index 413959e4..58b8eeb5 100644
--- a/flake.lock
+++ b/flake.lock
@@ -16,13 +16,31 @@
         "type": "github"
       }
     },
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1715865404,
+        "narHash": "sha256-/GJvTdTpuDjNn84j82cU6bXztE0MSkdnTWClUCRub78=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "8dc45382d5206bd292f9c2768b8058a8fd8311d9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1698924604,
-        "narHash": "sha256-GCFbkl2tj8fEZBZCw3Tc0AkGo0v+YrQlohhEGJ/X4s0=",
+        "lastModified": 1716293225,
+        "narHash": "sha256-pU9ViBVE3XYb70xZx+jK6SEVphvt7xMTbm6yDIF4xPs=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "fa804edfb7869c9fb230e174182a8a1a7e512c40",
+        "rev": "3eaeaeb6b1e08a016380c279f8846e0bd8808916",
         "type": "github"
       },
       "original": {
@@ -32,43 +50,43 @@
         "type": "github"
       }
     },
+    "nixpkgs-lib": {
+      "locked": {
+        "lastModified": 1714640452,
+        "narHash": "sha256-QBx10+k6JWz6u7VsohfSw8g8hjdBZEf8CFzXH1/1Z94=",
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/50eb7ecf4cd0a5756d7275c8ba36790e5bd53e33.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/50eb7ecf4cd0a5756d7275c8ba36790e5bd53e33.tar.gz"
+      }
+    },
     "root": {
       "inputs": {
         "flake-compat": "flake-compat",
+        "flake-parts": "flake-parts",
         "nixpkgs": "nixpkgs",
-        "utils": "utils"
-      }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
+        "treefmt-nix": "treefmt-nix"
       }
     },
-    "utils": {
+    "treefmt-nix": {
       "inputs": {
-        "systems": "systems"
+        "nixpkgs": [
+          "nixpkgs"
+        ]
       },
       "locked": {
-        "lastModified": 1694529238,
-        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
+        "lastModified": 1715940852,
+        "narHash": "sha256-wJqHMg/K6X3JGAE9YLM0LsuKrKb4XiBeVaoeMNlReZg=",
         "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
+        "repo": "treefmt-nix",
+        "rev": "2fba33a182602b9d49f0b2440513e5ee091d838b",
         "type": "github"
       },
       "original": {
         "owner": "numtide",
-        "repo": "flake-utils",
+        "repo": "treefmt-nix",
         "type": "github"
       }
     }
diff --git a/flake.nix b/flake.nix
index b8f9ce58..111f7d7f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,40 +1,81 @@
 {
   description = "Userspace tools for bcachefs";
 
-  # Nixpkgs / NixOS version to use.
-  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
-  inputs.utils.url = "github:numtide/flake-utils";
-  inputs.flake-compat = {
-    url = "github:edolstra/flake-compat";
-    flake = false;
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+
+    flake-parts.url = "github:hercules-ci/flake-parts";
+
+    treefmt-nix = {
+      url = "github:numtide/treefmt-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    flake-compat = {
+      url = "github:edolstra/flake-compat";
+      flake = false;
+    };
   };
 
-  outputs = { self, nixpkgs, utils, ... }:
-    {
-      overlays.default = final: prev: {
-        bcachefs = final.callPackage ./build.nix { };
-      };
-    } // utils.lib.eachDefaultSystem (system:
-      let
-        pkgs = import nixpkgs {
-          inherit system;
-          overlays = [ self.overlays.default ];
-        };
-      in {
-        packages = {
-          inherit (pkgs) bcachefs;
-          bcachefs-fuse = pkgs.bcachefs.override { fuseSupport = true; };
-          default = pkgs.bcachefs;
-        };
+  outputs =
+    inputs@{
+      self,
+      nixpkgs,
+      flake-parts,
+      treefmt-nix,
+      flake-compat,
+      ...
+    }:
+    flake-parts.lib.mkFlake { inherit inputs; } {
+      imports = [ inputs.treefmt-nix.flakeModule ];
+
+      # can be extended, but these have proper binary cache support in nixpkgs
+      # as of writing.
+      systems = [
+        "aarch64-linux"
+        "x86_64-linux"
+      ];
 
-        formatter = pkgs.nixfmt;
+      perSystem =
+        {
+          self',
+          config,
+          pkgs,
+          ...
+        }:
+        {
+          packages.default = config.packages.bcachefs-tools;
+          packages.bcachefs-tools = pkgs.callPackage ./build.nix { };
 
-        devShells.default = pkgs.callPackage ({ mkShell, rustc, cargo, gnumake
-          , gcc, clang, pkg-config, libuuid, libsodium, keyutils, liburcu, zlib
-          , libaio, zstd, lz4, udev, bcachefs }:
-          mkShell {
-            LIBCLANG_PATH = "${clang.cc.lib}/lib";
-            inherit (bcachefs) nativeBuildInputs buildInputs;
-          }) { };
-      });
+          packages.bcachefs-tools-fuse = config.packages.bcachefs-tools.override { fuseSupport = true; };
+
+          devShells.default = pkgs.mkShell {
+            inputsFrom = [
+              config.packages.default
+              config.treefmt.build.devShell
+            ];
+
+            LIBCLANG_PATH = "${pkgs.clang.cc.lib}/lib";
+
+            # here go packages that aren't required for builds but are used for
+            # development, and might need to be version matched with build
+            # dependencies (e.g. clippy or rust-analyzer).
+            packages = with pkgs; [
+              cargo-audit
+              cargo-outdated
+              clang-tools
+              clippy
+              rust-analyzer
+            ];
+          };
+
+          treefmt.config = {
+            projectRootFile = "flake.nix";
+
+            programs = {
+              nixfmt-rfc-style.enable = true;
+            };
+          };
+        };
+    };
 }