initial dev setup

2025-09-30 21:06:09 +02:00 · 2025-09-30 21:06:09 +02:00 · 3953ef2bfb
commit 3953ef2bfb
8 changed files with 321 additions and 0 deletions
--- a/flake.nix
+++ b/flake.nix
@ -0,0 +1,88 @@
+{
+  description = "Rust development environment for dev with toolchain";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+        # Read the file relative to the flake's root
+        overrides = (builtins.fromTOML (builtins.readFile (self + "/raytracer/rust-toolchain.toml")));
+        libPath = with pkgs; lib.makeLibraryPath [
+          # load external libraries that you need in your rust project here
+        ];
+      in
+      {
+        devShells.default = pkgs.mkShell rec {
+          nativeBuildInputs = [ pkgs.pkg-config ];
+          buildInputs = with pkgs; [
+            clang
+            llvmPackages.bintools
+            rustup
+            qemu
+            OVMF
+          ];
+
+          RUSTC_VERSION = overrides.toolchain.channel;
+
+          # https://github.com/rust-lang/rust-bindgen#environment-variables
+          LIBCLANG_PATH = pkgs.lib.makeLibraryPath [ pkgs.llvmPackages_latest.libclang.lib ];
+
+          shellHook = ''
+                      export PATH=$PATH:''${CARGO_HOME:-~/.cargo}/bin
+                      export PATH=$PATH:''${RUSTUP_HOME:-~/.rustup}/toolchains/$RUSTC_VERSION-x86_64-unknown-linux-gnu/bin/
+
+            # Create VM working directory
+            mkdir -p ./vm/esp/efi/boot
+
+            # Copy non-secureboot OVMF firmware + writable VARS
+            cp ${pkgs.OVMF.out.firmware} ./vm/OVMF_CODE.fd
+            cp ${pkgs.OVMF.out.variables} ./vm/OVMF_VARS.fd
+            chmod +w ./vm/OVMF_VARS.fd
+
+            # Copy your EFI binary into the ESP
+            cp raytracer/target/x86_64-unknown-uefi/debug/raytracer.efi ./vm/esp/efi/boot/bootx64.efi
+
+            rm launch_vm.sh && touch launch_vm.sh
+            echo "/bin/bash" > launch_vm.sh
+            echo "qemu-system-x86_64 \\" >> launch_vm.sh
+            echo "  -enable-kvm \\" >> launch_vm.sh
+            echo "  -machine q35,accel=kvm \\" >> launch_vm.sh
+            echo "  -drive if=pflash,format=raw,readonly=on,file=./vm/OVMF_CODE.fd \\" >> launch_vm.sh
+            echo "  -drive if=pflash,format=raw,file=./vm/OVMF_VARS.fd \\" >> launch_vm.sh
+            echo "  -drive format=raw,file=fat:rw:./vm/esp" >> launch_vm.sh
+
+            chmod +x launch_vm.sh
+            
+            cp raytracer/target/x86_64-unknown-uefi/debug/raytracer.efi vm/esp/efi/boot/bootx64.efi
+          '';
+
+          # Add precompiled library to rustc search path
+          RUSTFLAGS = (builtins.map (a: ''-L ${a}/lib'') [
+            # add libraries here (e.g. pkgs.libvmi)
+          ]);
+
+          LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath (buildInputs ++ nativeBuildInputs);
+
+
+          # Add glibc, clang, glib, and other headers to bindgen search path
+          BINDGEN_EXTRA_CLANG_ARGS =
+            # Includes normal include path
+            (builtins.map (a: ''-I"${a}/include"'') [
+              # add dev libraries here (e.g. pkgs.libvmi.dev)
+              pkgs.glibc.dev
+            ])
+            # Includes with special directory paths
+            ++ [
+              ''-I"${pkgs.llvmPackages_latest.libclang.lib}/lib/clang/${pkgs.llvmPackages_latest.libclang.version}/include"''
+              ''-I"${pkgs.glib.dev}/include/glib-2.0"''
+              ''-I${pkgs.glib.out}/lib/glib-2.0/include/''
+            ];
+        };
+      }
+    );
+}