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Dependencies are satisfied
Building: sample1
Error target sample1 failed to compile:
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In lib/cryplot/src/plot/palettes.cr:9:3

 9 | enum Palette
     ^
Error: enum Palette must have at least one member

  # Gnuplot color palettes adapted from https://github.com/Gnuplotting/gnuplot-palettes
  enum Palette
    def to_s(io : IO) : Nil
      io << self.to_s.downcase
    end

    def data
      Cryplot.palettes[self]
    end
  end

  class_getter palettes : Hash(Palette, String) { get_palettes }

  private def self.get_palettes
    pals = Hash(Palette, String).new

    pals
  end