buildGoModule mod.go replace behaviour

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4

Turned out, the buildGoModule default buildPhase tried to compile subpackages that are not compileable.
Using a modified make rule:

  buildPhase = ''
    # make --trace go.build SHELL=${pkgs.bash}/bin/bash VERSION=${version} 
    CGO_ENABLED=0 go build -mod=vendor -v -o _output/bin/linux_amd64/rook \
      -tags "" -pkgdir .work/pkg/linux_amd64_static -installsuffix static \
      -ldflags '-s -w -X github.com/rook/rook/pkg/version.Version=${version}' \
      github.com/rook/rook/cmd/rook
  '';

solved the problem.