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Copyright (c) 2003-2017 Eelco Dolstra and the Nixpkgs/NixOS contributors

     

       
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Copyright (c) 2003-2018 Eelco Dolstra and the Nixpkgs/NixOS contributors

     

       
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Permission is hereby granted, free of charge, to any person obtaining

     

       
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a copy of this software and associated documentation files (the