dev: added flake dev environment

flake.nix

@@ -0,0 +1,200 @@
+{
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    systems.url = "github:nix-systems/default";
+    # Dev tools
+    treefmt-nix.url = "github:numtide/treefmt-nix";
+  };
+
+  outputs = inputs:
+    inputs.flake-parts.lib.mkFlake { inherit inputs; } {
+      systems = import inputs.systems;
+      imports = [
+        inputs.treefmt-nix.flakeModule
+      ];
+      perSystem = { config, self', pkgs, lib, system, ... }:
+        let
+          cargoToml = builtins.fromTOML (builtins.readFile ./Cargo.toml);
+          nonRustDeps = [
+            pkgs.pkg-config
+            pkgs.stdenv.cc.cc
+            pkgs.zlib
+            pkgs.openssl
+            pkgs.protobuf
+          ];
+          rust-toolchain = pkgs.symlinkJoin {
+            name = "rust-toolchain";
+            paths = [
+              pkgs.rustc
+              pkgs.cargo
+              pkgs.clippy
+              pkgs.cargo-watch
+              pkgs.rust-analyzer
+              pkgs.rustPlatform.rustcSrc
+              (pkgs.python3.withPackages (python-pkgs: [
+                python-pkgs.numpy
+                python-pkgs.pyarrow
+              ]))
+              pkgs.maturin
+            ];
+          };
+          NIX_LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath [
+              pkgs.stdenv.cc.cc
+              pkgs.zlib
+              pkgs.openssl
+              pkgs.protobuf
+            ];
+
+
+        # see: https://gist.github.com/ChadSki/926e5633961c9b48131eabd32e57adb2
+        # Conda installs it's packages and environments under this directory
+        installationPath = "~/.conda";
+        miniconda-version = "4.3.11";
+
+        # Downloaded Miniconda installer
+        minicondaScript = pkgs.stdenv.mkDerivation rec {
+          name = "miniconda-${miniconda-version}";
+          version = miniconda-version;
+          src = pkgs.fetchurl {
+            url = "https://repo.continuum.io/miniconda/Miniconda3-${miniconda-version}-Linux-x86_64.sh";
+            sha256 = "1f2g8x1nh8xwcdh09xcra8vd15xqb5crjmpvmc2xza3ggg771zmr";
+          };
+          # Nothing to unpack.
+          unpackPhase = "true";
+          # Rename the file so it's easier to use. The file needs to have .sh ending
+          # because the installation script does some checks based on that assumption.
+          # However, don't add it under $out/bin/ becase we don't really want to use
+          # it within our environment. It is called by "conda-install" defined below.
+          installPhase = ''
+            mkdir -p $out
+            cp $src $out/miniconda.sh
+          '';
+          # Add executable mode here after the fixup phase so that no patching will be
+          # done by nix because we want to use this miniconda installer in the FHS
+          # user env.
+          fixupPhase = ''
+            chmod +x $out/miniconda.sh
+          '';
+        };
+
+      # Wrap miniconda installer so that it is non-interactive and installs into the
+      # path specified by installationPath
+      conda = pkgs.runCommand "conda-install"
+        { buildInputs = [ pkgs.makeWrapper minicondaScript ]; }
+        ''
+          mkdir -p $out/bin
+          makeWrapper                            \
+            ${minicondaScript}/miniconda.sh      \
+            $out/bin/conda-install               \
+            --add-flags "-p ${installationPath}" \
+            --add-flags "-b"
+        '';
+
+        in
+        {
+          # Rust package
+          packages.default = pkgs.rustPlatform.buildRustPackage {
+            inherit (cargoToml.package) name version;
+            src = ./.;
+            cargoLock.lockFile = ./Cargo.lock;
+          };
+
+          # Rust dev environment
+          devShells.default = pkgs.mkShell {
+            inherit NIX_LD_LIBRARY_PATH;
+            inputsFrom = [
+              config.treefmt.build.devShell
+            ];
+            shellHook = ''
+              # For rust-analyzer 'hover' tooltips to work.
+              export RUST_SRC_PATH=${pkgs.rustPlatform.rustLibSrc}
+
+              echo
+              echo "🍎🍎 Run 'just <recipe>' to get started"
+              just
+            '';
+            buildInputs = nonRustDeps;
+            nativeBuildInputs = with pkgs; [
+              just
+              rust-toolchain
+              (pkgs.hiPrio pkgs.bashInteractive) # needed so it doesn't mangle terminal in vscode
+              python311
+              pre-commit
+            ];
+            # RUST_BACKTRACE = 1;
+          };
+
+      # NIXPKGS_ALLOW_UNFREE=1 nix develop '.#conda' --impure
+      # conda install -c conda-forge boa conda-verify
+      # NOTE: conda env create fails probably because I am not on  nvidia
+      # conda env create -f ./conda/environments/datafusion-dev.yaml -n datafusion-dev
+      # > ResolvePackageNotFound: cudf
+      devShells.conda = (pkgs.buildFHSUserEnv {
+          name = "conda";
+          targetPkgs = pkgs: (
+            with pkgs; [
+              autoconf
+              binutils
+              conda
+              cudatoolkit
+              curl
+              freeglut
+              gcc11
+              git
+              gitRepo
+              gnumake
+              gnupg
+              gperf
+              libGLU libGL
+              libselinux
+              linuxPackages.nvidia_x11
+              m4
+              ncurses5
+              procps
+              stdenv.cc
+              unzip
+              util-linux
+              wget
+              xorg.libICE
+              xorg.libSM
+              xorg.libX11
+              xorg.libXext
+              xorg.libXi
+              xorg.libXmu
+              xorg.libXrandr
+              xorg.libXrender
+              xorg.libXv
+              zlib
+            ]
+          );
+          profile = ''
+            # cuda
+            export CUDA_PATH=${pkgs.cudatoolkit}
+            # export LD_LIBRARY_PATH=${pkgs.linuxPackages.nvidia_x11}/lib
+            export EXTRA_LDFLAGS="-L/lib -L${pkgs.linuxPackages.nvidia_x11}/lib"
+            export EXTRA_CCFLAGS="-I/usr/include"
+            # conda
+            export PATH=${installationPath}/bin:$PATH
+            # Paths for gcc if compiling some C sources with pip
+            export NIX_CFLAGS_COMPILE="-I${installationPath}/include"
+            export NIX_CFLAGS_LINK="-L${installationPath}lib"
+            # Some other required environment variables
+            export FONTCONFIG_FILE=/etc/fonts/fonts.conf
+            export QTCOMPOSE=${pkgs.xorg.libX11}/share/X11/locale
+          '';
+        }).env;
+
+          # Add your auto-formatters here.
+          # cf. https://numtide.github.io/treefmt/
+          treefmt.config = {
+            projectRootFile = "flake.nix";
+            programs = {
+              nixpkgs-fmt.enable = true;
+              rustfmt.enable = true;
+            };
+          };
+        };
+    };
+}