multipass: add comments to explain patches

  };

  patches = [

    # Multipass is usually only delivered as a snap package on Linux, and it expects that

    # the LXD backend will also be delivered via a snap - in which cases the LXD socket

    # is available at '/var/snap/lxd/...'. Here we patch to ensure that Multipass uses the

    # LXD socket location on NixOS in '/var/lib/...'

    ./lxd_socket_path.patch

    # The upstream cmake file attempts to fetch googletest using FetchContent, which fails

    # in the Nix build environment. This patch disables the fetch in favour of providing

    # the googletest library from nixpkgs.

    ./cmake_no_fetch.patch

    # Ensures '-Wno-ignored-attributes' is supported by the compiler before attempting to build.

    ./cmake_warning.patch

    # As of Multipass 1.14.0, the upstream started using vcpkg for grabbing C++ dependencies,

    # which doesn't work in the nix build environment. This patch reverts that change, in favour

    # of providing those dependencies manually in this derivation.

    ./vcpkg_no_install.patch

    # The compiler flags used in nixpkgs surface an error in the test suite where an

    # unreachable path was not annotated as such - this patch adds the annotation to ensure

    # that the test suite passes in the nix build process.

    ./test_unreachable_call.patch

  ];