chore: snapshot main sync

docs/how-to-build-a-coding-agent/devenv.nix

@@ -0,0 +1,76 @@
+{ pkgs, lib, config, inputs, ... }:
+
+{
+  # https://devenv.sh/basics/
+  env.GREET = "devenv";
+
+  # https://devenv.sh/packages/
+  packages = [ 
+    pkgs.git 
+    pkgs.nodejs_20
+    pkgs.nodePackages.typescript
+    pkgs.nodePackages.ts-node
+    pkgs.ripgrep
+  ];
+
+  # https://devenv.sh/languages/
+  languages.go.enable = true;
+  languages.python = {
+    enable = true;
+    package = pkgs.python311;
+    venv.enable = true;
+    venv.requirements = ''
+      # Add Python requirements here
+    '';
+  };
+  languages.rust.enable = true;
+  languages.dotnet.enable = true;
+  languages.typescript.enable = true;
+
+  # https://devenv.sh/processes/
+  # processes.cargo-watch.exec = "cargo-watch";
+
+  # https://devenv.sh/services/
+  # services.postgres.enable = true;
+
+  # https://devenv.sh/scripts/
+  scripts.hello.exec = ''
+    echo hello from $GREET
+  '';
+
+  enterShell = ''
+    hello
+    echo "Available tools:"
+    git --version
+    go version
+    python --version
+    node --version
+    tsc --version
+    rustc --version
+    dotnet --version
+    rg --version
+  '';
+
+  # https://devenv.sh/tasks/
+  # tasks = {
+  #   "myproj:setup".exec = "mytool build";
+  #   "devenv:enterShell".after = [ "myproj:setup" ];
+  # };
+
+  # https://devenv.sh/tests/
+  enterTest = ''
+    echo "Running tests"
+    git --version | grep --color=auto "${pkgs.git.version}"
+    go version
+    python --version
+    node --version
+    rustc --version
+    dotnet --version
+    rg --version
+  '';
+
+  # https://devenv.sh/git-hooks/
+  # git-hooks.hooks.shellcheck.enable = true;
+
+  # See full reference at https://devenv.sh/reference/options/
+}