chore: import upstream snapshot with attribution

nix/devShell.nix

@@ -0,0 +1,248 @@
+{
+  mkShell,
+  lib,
+  stdenv,
+  bashInteractive,
+  doxygen,
+  nushell,
+  appstream,
+  flatpak-builder,
+  gdb,
+  cmake,
+  #, glxinfo # unused
+  ncurses,
+  nodejs,
+  prettier,
+  oniguruma,
+  parallel,
+  pkg-config,
+  python3,
+  qemu,
+  scdoc,
+  # snapcraft,
+  valgrind,
+  #, vulkan-loader # unused
+  vttest,
+  wabt,
+  wasmtime,
+  wraptest,
+  zig,
+  zig_0_15,
+  zip,
+  llvmPackages_latest,
+  bzip2,
+  expat,
+  fontconfig,
+  freetype,
+  glib,
+  glslang,
+  gtk4,
+  gtk4-layer-shell,
+  gobject-introspection,
+  gst_all_1,
+  libadwaita,
+  blueprint-compiler,
+  gettext,
+  adwaita-icon-theme,
+  hicolor-icon-theme,
+  harfbuzz,
+  libpng,
+  libxkbcommon,
+  libX11,
+  libXcursor,
+  libXext,
+  libXi,
+  libXinerama,
+  libXrandr,
+  libxml2,
+  spirv-cross,
+  simdutf,
+  zlib,
+  alejandra,
+  jq,
+  minisign,
+  pandoc,
+  pinact,
+  hyperfine,
+  poop,
+  typos,
+  shellcheck,
+  swiftlint,
+  uv,
+  wayland,
+  wayland-scanner,
+  wayland-protocols,
+  zon2nix,
+  pkgs,
+  # needed by GTK for loading SVG icons while running from within the
+  # developer shell
+  glycin-loaders,
+  librsvg,
+}: let
+  # See package.nix. Keep in sync.
+  ld_library_path = import ./build-support/ld-library-path.nix {
+    inherit pkgs lib stdenv;
+  };
+  gi_typelib_path = import ./build-support/gi-typelib-path.nix {
+    inherit pkgs lib stdenv;
+  };
+in
+  mkShell {
+    name = "ghostty";
+    packages =
+      [
+        # For builds
+        cmake
+        doxygen
+        jq
+        llvmPackages_latest.llvm
+        minisign
+        ncurses
+        pandoc
+        pkg-config
+        scdoc
+        zig
+        zip
+        zon2nix.packages.${stdenv.hostPlatform.system}.zon2nix
+
+        # For web and wasm stuff
+        nodejs
+
+        # Linting
+        prettier
+        alejandra
+        pinact
+        typos
+        shellcheck
+
+        # Testing
+        parallel
+        python3
+        vttest
+        hyperfine
+
+        # wasm
+        wabt
+        wasmtime
+
+        # Localization
+        gettext
+
+        # CI
+        uv
+
+        # Scripting
+        nushell
+
+        # We need these GTK-related deps on all platform so we can build
+        # dist tarballs.
+        blueprint-compiler
+        libadwaita
+        gtk4
+
+        # Python packages
+        (python3.withPackages (python-pkgs: [
+          python-pkgs.ucs-detect
+        ]))
+      ]
+      ++ lib.optionals stdenv.hostPlatform.isLinux [
+        # My nix shell environment installs the non-interactive version
+        # by default so we have to include this.
+        bashInteractive
+
+        # Used for testing SIMD codegen. This is Linux only because the macOS
+        # build only has the qemu-system files.
+        qemu
+
+        appstream
+        flatpak-builder
+        gdb
+        # snapcraft
+        valgrind
+        wraptest
+
+        bzip2
+        expat
+        fontconfig
+        freetype
+        harfbuzz
+        libpng
+        libxml2
+        oniguruma
+        simdutf
+        zlib
+
+        glslang
+        spirv-cross
+
+        libxkbcommon
+        libX11
+        libXcursor
+        libXext
+        libXi
+        libXinerama
+        libXrandr
+
+        # Only needed for GTK builds
+        gtk4-layer-shell
+        glib
+        gobject-introspection
+        wayland
+        wayland-scanner
+        wayland-protocols
+        gst_all_1.gstreamer
+        gst_all_1.gst-plugins-base
+        gst_all_1.gst-plugins-good
+
+        # needed by GTK for loading SVG icons while running from within the
+        # developer shell
+        glycin-loaders
+        librsvg
+
+        # for benchmarking
+        poop
+      ]
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [
+        swiftlint
+      ];
+
+    # This should be set onto the rpath of the ghostty binary if you want
+    # it to be "portable" across the system.
+    LD_LIBRARY_PATH = ld_library_path;
+    GI_TYPELIB_PATH = gi_typelib_path;
+
+    shellHook =
+      (lib.optionalString stdenv.hostPlatform.isLinux ''
+        # On Linux we need to setup the environment so that all GTK data
+        # is available (namely icons).
+
+        # Minimal subset of env set by wrapGAppsHook4 for icons and global settings
+        export XDG_DATA_DIRS=$XDG_DATA_DIRS:${hicolor-icon-theme}/share:${adwaita-icon-theme}/share
+        export XDG_DATA_DIRS=$XDG_DATA_DIRS:$GSETTINGS_SCHEMAS_PATH # from glib setup hook
+      '')
+      + (lib.optionalString stdenv.hostPlatform.isDarwin ''
+        # On macOS, we unset the macOS SDK env vars that Nix sets up because
+        # we rely on a system installation. Nix only provides a macOS SDK
+        # and we need iOS too.
+        unset SDKROOT
+        unset DEVELOPER_DIR
+
+        # AFL++ needs to use the Homebrew/system Apple toolchain directly.
+        # The Nix compiler wrapper variables leak a Nix linker into afl-cc,
+        # which breaks even trivial fuzz harness links on macOS.
+        unset NIX_CC
+        unset NIX_CFLAGS_COMPILE
+        unset NIX_LDFLAGS
+        unset LD
+        unset CC
+        unset CXX
+        unset CFLAGS
+        unset CPPFLAGS
+        unset LDFLAGS
+
+        # We need to remove "xcrun" from the PATH. It is injected by
+        # some dependency but we need to rely on system Xcode tools
+        export PATH=$(echo "$PATH" | awk -v RS=: -v ORS=: '$0 !~ /xcrun/ || $0 == "/usr/bin" {print}' | sed 's/:$//')
+        export PATH="/opt/homebrew/opt/llvm/bin:/opt/homebrew/bin:/usr/local/opt/llvm/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:$PATH"
+      '');
+  }