Migration to grisp_tools 2.x

[LostKobrakai]

This is a first attempt at naively updating the existing codebase. I've discussed an alternative – more integrated into native mix releases – appraoch with @eproxus, which I will try to get at later this week.

[LostKobrakai]

Some comments for the current state of changes. Things are very rough around the edges.

• File overlays don't work. Additional files need to be copied manually.
• Mix release start scripts use an additional boot env variable. This can be set in grisp.ini as -boot_var RELEASE_LIB {{release_name}}/lib

Release config used:

  def grisp do
    [
      otp: [verson: "23.0"],
      deploy: [
        # pre_script: "rm -rf /Volumes/GRISP/*",
        # destination: "tmp/grisp_sd"
        # post_script: "diskutil unmount /Volumes/GRISP",
      ]
    ]
  end

  def releases do
    {:my_app,
       [
         overwrite: true,
         cookie: "grisp",
         include_erts: &MixGrisp.Release.erts/0,
         steps: [&MixGrisp.Release.init/1, :assemble],
         # For epmd support
         # Add to deps
         # {:epmd, github: "erlang/epmd", ref: "4d1a59", runtime: false},
         # and uncomment
         # applications: [epmd: :none, my_app: :permanent],
         strip_beams: Mix.env() == :prod
       ]}
  end

[ziopio]

Solved in #7