Custom Homebrew formulae — see https://johnsiu.com/blog/macos-qemu-spice/

qemu-spice.rb

class QemuSpice < Formula
  desc "Emulator for x86 and PowerPC"
  homepage "https://www.qemu.org/"
  url "https://download.qemu.org/qemu-7.1.0-rc0.tar.xz"
  sha256 "50435f5fb361fbd57b7ec719290fd29f9a6ec96c73f04775a285a514085c7d6a"
  license "GPL-2.0-only"
  revision 1
  head "https://git.qemu.org/git/qemu.git", branch: "master"

  bottle do
    rebuild 1
    sha256 arm64_monterey: "f392a90d2ffce27b0dc370bf2d487b68bf15c174c5c22124f3ffef1bf77c3e6c"
    sha256 arm64_big_sur:  "961dd7152f2aa4cd3f87429a6928c77307748fdda00ad55c359b2b77c383d99c"
    sha256 monterey:       "083ca77ed158f6df966acbeeefd086fcb922ea5fe14cea4ff390475403c98686"
    sha256 big_sur:        "334d48d38b97e7724a64dacd2548594e5264e9995d117f8c4e81351574325090"
    sha256 catalina:       "806796c78fbb4c453361e94a502e1c0bdef1711959a6307334e4a97380475986"
    sha256 x86_64_linux:   "200b3d9d2b454dac6e6a0de585ca3267a1b3aab8de327548650de59b895498bd"
  end

  depends_on "libtool" => :build
  depends_on "meson" => :build
  depends_on "ninja" => :build
  depends_on "pkg-config" => :build

  depends_on "glib"
  depends_on "gnutls"
  depends_on "jpeg"
  depends_on "libpng"
  depends_on "libslirp"
  depends_on "libssh"
  depends_on "libusb"
  depends_on "lzo"
  depends_on "ncurses"
  depends_on "nettle"
  depends_on "pixman"
  depends_on "snappy"
  depends_on "vde"
  depends_on "zstd"

  on_linux do
    depends_on "attr"
    depends_on "gcc"
    depends_on "gtk+3"
    depends_on "libcap-ng"
  end

  fails_with gcc: "5"

  # 820KB floppy disk image file of FreeDOS 1.2, used to test QEMU
  resource "homebrew-test-image" do
    url "https://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/distributions/1.2/official/FD12FLOPPY.zip"
    sha256 "81237c7b42dc0ffc8b32a2f5734e3480a3f9a470c50c14a9c4576a2561a35807"
  end

  # Fixes RDTSCP not being exposed to hosts
  # See https://gitlab.com/qemu-project/qemu/-/issues/1011
  patch do
    url "https://gitlab.com/qemu-project/qemu/-/commit/d8cf2c29cc1077cd8f8ab0580b285bff92f09d1c.diff"
    sha256 "b7c0db81e136fb3b9692e56f4c95abbcbd196dc0b7feb517241dda20d9ec3166"
  end

  def install
    ENV["LIBTOOL"] = "glibtool"

    args = %W[
      --prefix=#{prefix}
      --cc=#{ENV.cc}
      --host-cc=#{ENV.cc}
      --disable-bsd-user
      --disable-guest-agent
      --enable-curses
      --enable-libssh
      --enable-slirp=system
      --enable-vde
      --enable-virtfs
      --enable-zstd
      --extra-cflags=-DNCURSES_WIDECHAR=1
      --disable-sdl
      --enable-spice
			--enable-vnc
			--enable-vnc-jpeg
			--enable-vnc-png
    ]

    # Please remove this line when the CI gets updated to a recent version of Ubuntu(kernel version >= 4.9)
    args << "--disable-linux-user"

    # Sharing Samba directories in QEMU requires the samba.org smbd which is
    # incompatible with the macOS-provided version. This will lead to
    # silent runtime failures, so we set it to a Homebrew path in order to
    # obtain sensible runtime errors. This will also be compatible with
    # Samba installations from external taps.
    args << "--smbd=#{HOMEBREW_PREFIX}/sbin/samba-dot-org-smbd"

    args << "--disable-gtk" if OS.mac?
    args << "--enable-cocoa" if OS.mac?
    args << "--enable-gtk" if OS.linux?

    system "./configure", *args
    system "make", "V=1", "install"
  end

  test do
    expected = build.stable? ? version.to_s : "QEMU Project"
    assert_match expected, shell_output("#{bin}/qemu-system-aarch64 --version")
    assert_match expected, shell_output("#{bin}/qemu-system-alpha --version")
    assert_match expected, shell_output("#{bin}/qemu-system-arm --version")
    assert_match expected, shell_output("#{bin}/qemu-system-cris --version")
    assert_match expected, shell_output("#{bin}/qemu-system-hppa --version")
    assert_match expected, shell_output("#{bin}/qemu-system-i386 --version")
    assert_match expected, shell_output("#{bin}/qemu-system-m68k --version")
    assert_match expected, shell_output("#{bin}/qemu-system-microblaze --version")
    assert_match expected, shell_output("#{bin}/qemu-system-microblazeel --version")
    assert_match expected, shell_output("#{bin}/qemu-system-mips --version")
    assert_match expected, shell_output("#{bin}/qemu-system-mips64 --version")
    assert_match expected, shell_output("#{bin}/qemu-system-mips64el --version")
    assert_match expected, shell_output("#{bin}/qemu-system-mipsel --version")
    assert_match expected, shell_output("#{bin}/qemu-system-nios2 --version")
    assert_match expected, shell_output("#{bin}/qemu-system-or1k --version")
    assert_match expected, shell_output("#{bin}/qemu-system-ppc --version")
    assert_match expected, shell_output("#{bin}/qemu-system-ppc64 --version")
    assert_match expected, shell_output("#{bin}/qemu-system-riscv32 --version")
    assert_match expected, shell_output("#{bin}/qemu-system-riscv64 --version")
    assert_match expected, shell_output("#{bin}/qemu-system-rx --version")
    assert_match expected, shell_output("#{bin}/qemu-system-s390x --version")
    assert_match expected, shell_output("#{bin}/qemu-system-sh4 --version")
    assert_match expected, shell_output("#{bin}/qemu-system-sh4eb --version")
    assert_match expected, shell_output("#{bin}/qemu-system-sparc --version")
    assert_match expected, shell_output("#{bin}/qemu-system-sparc64 --version")
    assert_match expected, shell_output("#{bin}/qemu-system-tricore --version")
    assert_match expected, shell_output("#{bin}/qemu-system-x86_64 --version")
    assert_match expected, shell_output("#{bin}/qemu-system-xtensa --version")
    assert_match expected, shell_output("#{bin}/qemu-system-xtensaeb --version")
    resource("homebrew-test-image").stage testpath
    assert_match "file format: raw", shell_output("#{bin}/qemu-img info FLOPPY.img")
  end
end

spice-macos.rb

class SpiceMacos < Formula
  desc "SPICE remote display system server component for macOS"
  homepage "https://www.spice-space.org/"
  url "https://gitlab.freedesktop.org/spice/spice.git"
  version "master"
  license "GNU LGPL 2.1+"
end

class Spice < Formula

  depends_on "autoconf" => :build
  depends_on "autoconf-archive" => :build
  depends_on "autogen" => :build
  depends_on "automake" => :build
  depends_on "gobject-introspection" => :build
  depends_on "intltool" => :build
  depends_on "libtool" => :build
  depends_on "pkg-config" => :build
  depends_on "vala" => :build

  depends_on "atk"
  depends_on "cairo"
  depends_on "gdk-pixbuf"
  depends_on "gettext"
  depends_on "glib"
  depends_on "gst-libav"
  depends_on "gst-plugins-bad"
  depends_on "gst-plugins-base"
  depends_on "gst-plugins-good"
  depends_on "gst-plugins-ugly"
  depends_on "gstreamer"
  depends_on "gtk+3"
  depends_on "jpeg"
  depends_on "json-glib"
  depends_on "libusb"
  depends_on "lz4"
  depends_on "openssl@1.1"
  depends_on "opus"
  depends_on "pango"
  depends_on "pixman"
  depends_on "spice-protocol"
  depends_on "usbredir"

  def install
    system "./autogen.sh"
    system "./configure", "--disable-debug",
                          "--disable-dependency-tracking",
                          "--disable-silent-rules",
                          "--prefix=#{prefix}"
    system "make", "install"
  end

end