Merge pull request #1199 from Philipp-M/nix-flakes

Added Nix build and dev-shell support via Nix flakes

default.nix

@@ -0,0 +1,10 @@
+(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

flake.nix

@@ -0,0 +1,80 @@
+{
+  description = "Fornjot is an early-stage project to create a next-generation, code-first CAD application";
+  inputs = {
+    flake-compat = { url = "github:edolstra/flake-compat"; flake = false; };
+    nixpkgs.url = "github:NixOS/nixpkgs";
+    flake-utils.url = "github:numtide/flake-utils";
+    rust-overlay = { url = "github:oxalica/rust-overlay"; inputs = { nixpkgs.follows = "nixpkgs"; flake-utils.follows = "flake-utils"; }; };
+    crane = {
+      url = "github:ipetkov/crane";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-compat.follows = "flake-compat";
+        flake-utils.follows = "flake-utils";
+      };
+    };
+  };
+
+  outputs = { self, nixpkgs, crane, flake-utils, rust-overlay, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; overlays = [ (import rust-overlay) ]; };
+        rustToolchain = pkgs.rust-bin.fromRustupToolchain (
+          # extend toolchain with rust-analyzer for better IDE support
+          let toolchainToml = (builtins.fromTOML (builtins.readFile ./rust-toolchain.toml)).toolchain; in
+          {
+            channel = toolchainToml.channel;
+            components = toolchainToml.components ++ [ "rust-analyzer" ];
+          }
+        );
+        craneLib = (crane.mkLib pkgs).overrideToolchain rustToolchain;
+        # Only keeps assets in crates/ (currently shaders and fonts)
+        assetsFilter = path: _type: (builtins.match ".*(:?wgsl|ttf)$" path) != null;
+        filter = path: type: (assetsFilter path type) || (craneLib.filterCargoSources path type);
+        buildInputs = with pkgs; [
+          pkg-config
+          fontconfig
+          cmake
+          wayland
+          libGL
+          xorg.libX11
+          xorg.libXcursor
+          xorg.libXi
+          xorg.libXrandr
+        ];
+
+        fornjot = craneLib.buildPackage {
+          pname = "fj-app";
+          src = nixpkgs.lib.cleanSourceWith { src = ./.; inherit filter; };
+          inherit buildInputs;
+        };
+
+        wrappedFornjot = pkgs.symlinkJoin {
+          name = "fj-app";
+          paths = [ fornjot ];
+
+          buildInputs = [ pkgs.makeWrapper ];
+
+          postBuild = ''
+            wrapProgram $out/bin/fj-app \
+              --prefix LD_LIBRARY_PATH : ${nixpkgs.lib.makeLibraryPath [ pkgs.vulkan-loader ]}
+          '';
+        };
+      in
+      {
+        checks = { inherit fornjot; };
+
+        packages.default = wrappedFornjot;
+
+        apps.default = flake-utils.lib.mkApp { drv = wrappedFornjot; };
+
+        devShells.default = pkgs.mkShell {
+          inputsFrom = builtins.attrValues self.checks;
+
+          inherit buildInputs;
+          nativeBuildInputs = [ rustToolchain ];
+
+          LD_LIBRARY_PATH = "${nixpkgs.lib.makeLibraryPath [ pkgs.vulkan-loader ]}";
+        };
+      });
+}

shell.nix

@@ -0,0 +1,10 @@
+(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 = ./.; }
+).shellNix