Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
ghc-websockets-snap
ghc-websockets-snap(x86-64)
libHSwebsockets-snap-0.10.2.3-EfI9VRzOF472tTu9E3Vkgt-ghc8.0.2.so()(64bit)

Requires :

libHSHUnit-1.5.0.0-DvjF79OHhCC7SzfeEty4OI-ghc8.0.2.so()(64bit)
libHSSHA-1.6.4.2-6ZuKopcglGG4yoCGsd9koJ-ghc8.0.2.so()(64bit)
libHSarray-0.5.1.1-ghc8.0.2.so()(64bit)
libHSattoparsec-0.13.1.0-FfnvSlEhYl6E00jFTwLP4F-ghc8.0.2.so()(64bit)
libHSbase-4.9.1.0-ghc8.0.2.so()(64bit)
libHSbase64-bytestring-1.0.0.1-4O9TExPPz6eI82Yj7L4SIj-ghc8.0.2.so()(64bit)
libHSbinary-0.8.3.0-ghc8.0.2.so()(64bit)
libHSblaze-builder-0.4.0.2-FRwZEt0uqtxKWrLYdFtkGs-ghc8.0.2.so()(64bit)
libHSbytestring-0.10.8.1-ghc8.0.2.so()(64bit)
libHScall-stack-0.1.0-FYVrCPXGP9EGAuTW32963O-ghc8.0.2.so()(64bit)
libHScase-insensitive-1.2.0.10-HOfpaHnAjpYL0MaSMRouLr-ghc8.0.2.so()(64bit)
libHSclock-0.7.2-8dRNleB7rysIZAOReuhpZA-ghc8.0.2.so()(64bit)
libHScontainers-0.5.7.1-ghc8.0.2.so()(64bit)
libHSdeepseq-1.4.2.0-ghc8.0.2.so()(64bit)
libHSdirectory-1.3.0.0-ghc8.0.2.so()(64bit)
libHSentropy-0.3.8-14HIw40nRRY968j6AdY1H4-ghc8.0.2.so()(64bit)
libHSfilepath-1.4.1.1-ghc8.0.2.so()(64bit)
libHSghc-prim-0.5.0.0-ghc8.0.2.so()(64bit)
libHShashable-1.2.6.1-ArdkmQrtdsLPQA60ZQw2E-ghc8.0.2.so()(64bit)
libHSinteger-gmp-1.0.0.1-ghc8.0.2.so()(64bit)
libHSinteger-logarithms-1.0.2-92lMiWV9mmYAwfMEYgfQ0D-ghc8.0.2.so()(64bit)
libHSio-streams-1.4.0.0-7Jqsut9Akmx7Dh8N45IISg-ghc8.0.2.so()(64bit)
libHSio-streams-haproxy-1.0.0.1-36Brt16bgb4CjE8FoqUk7P-ghc8.0.2.so()(64bit)
libHSlifted-base-0.2.3.11-GQ8h0b1wJUC11xTxTtHqWV-ghc8.0.2.so()(64bit)
libHSmonad-control-1.0.2.1-CqOqIBYVBjy1GnPfyWnFHC-ghc8.0.2.so()(64bit)
libHSmtl-2.2.1-BLKBelFsPB3BoFeSWSOYj6-ghc8.0.2.so()(64bit)
libHSnetwork-2.6.3.2-IsLM4TXcLoRI0fmmBYVyQz-ghc8.0.2.so()(64bit)
libHSnetwork-uri-2.6.1.0-Fj1qKIThD9W270EtbkvRHL-ghc8.0.2.so()(64bit)
libHSold-locale-1.0.0.7-KGBP1BSKxH5GCm0LnZP04j-ghc8.0.2.so()(64bit)
libHSparsec-3.1.11-4MSigapSiUw1ERNBXZn0E5-ghc8.0.2.so()(64bit)
libHSprimitive-0.6.2.0-4578caNkWQ54Gt1mxLF2Yh-ghc8.0.2.so()(64bit)
libHSprocess-1.4.3.0-ghc8.0.2.so()(64bit)
libHSrandom-1.1-9tceXaeYIMZ4JrKq20Egog-ghc8.0.2.so()(64bit)
libHSreadable-0.3.1-17FFVfnPLCp3HGqVwQigq7-ghc8.0.2.so()(64bit)
libHSregex-base-0.93.2-AYjYAsBidAc8f5XNm9b2Aa-ghc8.0.2.so()(64bit)
libHSregex-posix-0.95.2-KQJt29lnRa45d6bFn9XkFO-ghc8.0.2.so()(64bit)
libHSscientific-0.3.5.1-29PQkFlSg2MLG0o5mYHr65-ghc8.0.2.so()(64bit)
libHSsnap-core-1.0.2.1-BpDdz4oIFd57ejjUbtWAWC-ghc8.0.2.so()(64bit)
libHSsnap-server-1.0.2.2-71LvGok8ax5IabEHgk69qD-ghc8.0.2.so()(64bit)
libHSstm-2.4.4.1-JQn4hNPyYjP5m9AcbI88Ve-ghc8.0.2.so()(64bit)
libHStext-1.2.2.2-1cn50juu89QSL9QkUVcRY-ghc8.0.2.so()(64bit)
libHStime-1.6.0.1-ghc8.0.2.so()(64bit)
libHStransformers-0.5.2.0-ghc8.0.2.so()(64bit)
libHStransformers-base-0.4.4-GKSs0LKukAL8ymq2naFmrH-ghc8.0.2.so()(64bit)
libHStransformers-compat-0.5.1.4-IuFogs8HAVUJBWVNMhtssu-ghc8.0.2.so()(64bit)
libHSunix-2.7.2.1-ghc8.0.2.so()(64bit)
libHSunix-compat-0.4.3.1-Ausmw6d7KIwA7sl52mzqxC-ghc8.0.2.so()(64bit)
libHSunordered-containers-0.2.8.0-EsriWmISHwMG6fvrGnOReO-ghc8.0.2.so()(64bit)
libHSvector-0.12.0.1-692PQMDMB6pIQ1uGwefDcQ-ghc8.0.2.so()(64bit)
libHSwebsockets-0.10.0.0-4nDrm1NL4ce53v1daCN6oX-ghc8.0.2.so()(64bit)
libHSzlib-0.6.1.2-7negTfm2ujt1gW4wr40MUp-ghc8.0.2.so()(64bit)
libHSzlib-bindings-0.1.1.5-4AFfs0NmxaYKZpHnixldSp-ghc8.0.2.so()(64bit)
libc.so.6()(64bit)
libc.so.6(GLIBC_2.14)(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libdl.so.2()(64bit)
libgmp.so.10()(64bit)
libpthread.so.0()(64bit)
librt.so.1()(64bit)
libutil.so.1()(64bit)
libz.so.1()(64bit)
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
rpmlib(PayloadIsXz) <= 5.2-1

Content of RPM :
/usr/lib64/ghc-8.0.2/websockets-snap-0.10.2.3-EfI9VRzOF472tTu9E3Vkgt
/usr/lib64/ghc-8.0.2/websockets-snap-0.10.2.3-EfI9VRzOF472tTu9E3Vkgt/libHSwebsockets-snap-0.10.2.3-EfI9VRzOF472tTu9E3Vkgt-ghc8.0.2.so
/usr/share/doc/packages/ghc-websockets-snap
/usr/share/doc/packages/ghc-websockets-snap/LICENSE