flake.nix

{
  description = "An example project using flutter";

  inputs.nixpkgs = {
    url = "github:nixos/nixpkgs/nixos-unstable";
  };
  inputs.flake-utils.url = "github:numtide/flake-utils";
  inputs.flake-compat = {
    url = "github:edolstra/flake-compat";
    flake = false;
  };

  outputs = { self, nixpkgs, flake-utils, ... }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          config.allowUnfree = true;
          config.android_sdk.accept_license = true;
        };
        pythonEnv = pkgs.python313.withPackages (ps: [
          ps.pip
          ps.virtualenv
          ps.pygments
          ps.jupyter
          ps.ipykernel
          ps.notebook
          ps.pymssql
          ps.pytest
        ]);
        tex = (pkgs.texlive.combine {
            inherit (pkgs.texlive) scheme-full
              latexmk;
          });
      in {
        devShells.default = pkgs.mkShell.override {stdenv = pkgs.llvmPackages_21.stdenv;} {
          buildInputs = with pkgs; [
            (pkgs.vscode-with-extensions.override {
              vscode = pkgs.vscode-fhs;
              vscodeExtensions = with pkgs.vscode-extensions; [
                ms-python.python
                ms-python.vscode-pylance
                ms-toolsai.jupyter
		anthropic.claude-code
		ms-vscode.cpptools
		asvetliakov.vscode-neovim
              ];
            })
            pythonEnv
            antlr
            cmake
            zlib
            zlib.dev
            gdb
            perf
            perl
            tex
            plantuml
            inkscape
            llvmPackages_21.llvm
            llvmPackages_21.llvm.dev
            nodejs_20
            graphviz
          ];

          nativeBuildInputs = [
            pkgs.clang-tools
          ];

          NIX_LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath [
            pkgs.stdenv.cc.cc
            pkgs.zlib
            pkgs.zlib.dev
          ];

          NIX_LD = pkgs.lib.fileContents "${pkgs.stdenv.cc}/nix-support/dynamic-linker";
          shellHook = ''
    export VENV_DIR="$PWD/.venv"
    if [ ! -d "$VENV_DIR" ]; then
      ${pythonEnv}/bin/python -m venv $VENV_DIR
      source $VENV_DIR/bin/activate
      pip install pip setuptools wheel
    else
      source $VENV_DIR/bin/activate
    fi

    export LD_LIBRARY_PATH=$NIX_LD_LIBRARY_PATH
    export PYTHONPATH="${pythonEnv}/lib/python3.13/site-packages:$PYTHONPATH"

    if [ -f requirements.txt ]; then
      pip install -r requirements.txt
    fi

    python -m ipykernel install --user --name iu9-sql-compiler --display-name "Python (iu9-sql-compiler)"

    python --version
  '';
        };
      });
}