=> Bootstrap dependency digest>=20010302: found digest-20160304
=> Checksum SHA1 OK for chessbooks/medium.zip
=> Checksum RMD160 OK for chessbooks/medium.zip
=> Checksum SHA512 OK for chessbooks/medium.zip
===> Installing dependencies for gnuchess-book-medium-20000511nb4
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency gnuchess>=6: found gnuchess-6.2.5
===> Overriding tools for gnuchess-book-medium-20000511nb4
===> Extracting for gnuchess-book-medium-20000511nb4
unzip: book.txt may be corrupted due to weak text file detection heuristic
===> Patching for gnuchess-book-medium-20000511nb4
===> Creating toolchain wrappers for gnuchess-book-medium-20000511nb4