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

Provides :
ghc-wai-websockets
ghc-wai-websockets(x86-64)
libHSwai-websockets-3.0.1.1-4D4k8D6X0F5KxTQUZ0n44-ghc8.4.1.so()(64bit)

Requires :

libHSsemigroups-0.18.4-38OPGmMfh928ND3Gy7Pzxr-ghc8.4.1.so()(64bit)
libHSattoparsec-0.13.2.2-3BkGVuOn2dQH7RBDbxwnaS-ghc8.4.1.so()(64bit)
libHSprimitive-0.6.3.0-CjyqfzwbTeFC8kYPPNlX3M-ghc8.4.1.so()(64bit)
libHSinteger-logarithms-1.0.2.1-3OoryR65EVrLEbz98stWhu-ghc8.4.1.so()(64bit)
libHSarray-0.5.2.0-ghc8.4.1.so()(64bit)
libHSunix-2.7.2.2-ghc8.4.1.so()(64bit)
libHSwebsockets-0.12.4.0-JOBZQ4yYgBr5B8P3wEhW43-ghc8.4.1.so()(64bit)
libffi.so.4()(64bit)
libHSSHA-1.6.4.4-Bona5BWnwWh4cskcIUiJnA-ghc8.4.1.so()(64bit)
libHSprocess-1.6.3.0-ghc8.4.1.so()(64bit)
ld-linux-x86-64.so.2(GLIBC_2.3)(64bit)
libHSbase-4.11.0.0-ghc8.4.1.so()(64bit)
libgmp.so.10()(64bit)
libc.so.6(GLIBC_2.3.4)(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.14)(64bit)
libutil.so.1()(64bit)
libHScase-insensitive-1.2.0.11-8AXw0qcdEFT1EwFpSGKdNx-ghc8.4.1.so()(64bit)
libHSdirectory-1.3.1.5-ghc8.4.1.so()(64bit)
libc.so.6(GLIBC_2.10)(64bit)
rpmlib(CompressedFileNames) <= 3.0.4-1
ld-linux-x86-64.so.2()(64bit)
libHSbinary-0.8.5.1-ghc8.4.1.so()(64bit)
rpmlib(PayloadIsLzma) <= 4.4.6-1
libHSfilepath-1.4.2-ghc8.4.1.so()(64bit)
libpthread.so.0(GLIBC_2.12)(64bit)
libc.so.6()(64bit)
libHShttp-types-0.12.1-2ivLhR3tIB7A1NKuzz4Xnq-ghc8.4.1.so()(64bit)
librt.so.1(GLIBC_2.2.5)(64bit)
libHSwai-3.2.1.1-1sEcezcEiTPJZ9PZsg2JuZ-ghc8.4.1.so()(64bit)
librt.so.1()(64bit)
libm.so.6(GLIBC_2.2.5)(64bit)
libHSentropy-0.4.1.1-8cg3gWFERWYBQMpE63O8Uk-ghc8.4.1.so()(64bit)
libHSzlib-0.6.2-499N3oUwd8nF2FI93hZ1SG-ghc8.4.1.so()(64bit)
libpthread.so.0(GLIBC_2.3.2)(64bit)
libHScontainers-0.5.11.0-ghc8.4.1.so()(64bit)
libdl.so.2()(64bit)
libHSinteger-gmp-1.0.1.0-ghc8.4.1.so()(64bit)
libHStime-1.8.0.2-ghc8.4.1.so()(64bit)
libHSvault-0.3.1.0-BL06o3W9QKj1SYFRQRIWVE-ghc8.4.1.so()(64bit)
libHStransformers-0.5.5.0-ghc8.4.1.so()(64bit)
libHSnetwork-2.6.3.4-7HxGKupjap18PmJuhYUMzw-ghc8.4.1.so()(64bit)
libHSrandom-1.1-Bzf9YW9nFUS5UwW0OIfLBC-ghc8.4.1.so()(64bit)
libHSstreaming-commons-0.2.0.0-9OhlhLIKhdX1xpvRtIrmEj-ghc8.4.1.so()(64bit)
libHSunordered-containers-0.2.9.0-GVeyBi4ueokHe3mExM0LfQ-ghc8.4.1.so()(64bit)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libpthread.so.0(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.3.2)(64bit)
libpthread.so.0()(64bit)
libHSasync-2.2.1-1HDifB811KbLwtgAh5e06R-ghc8.4.1.so()(64bit)
libc.so.6(GLIBC_2.8)(64bit)
libHSblaze-builder-0.4.1.0-1lQcalGyz5S87Rx0azM34-ghc8.4.1.so()(64bit)
libHSstm-2.4.5.0-ghc8.4.1.so()(64bit)
libHSdeepseq-1.4.3.0-ghc8.4.1.so()(64bit)
libc.so.6(GLIBC_2.7)(64bit)
libHShashable-1.2.7.0-KWvGBYL0Jo55TkgBYXSXSN-ghc8.4.1.so()(64bit)
libm.so.6()(64bit)
libHSghc-prim-0.5.2.0-ghc8.4.1.so()(64bit)
libHSbytestring-0.10.8.2-ghc8.4.1.so()(64bit)
libc.so.6(GLIBC_2.3)(64bit)
libHStext-1.2.3.0-ghc8.4.1.so()(64bit)
libHSbase64-bytestring-1.0.0.1-DSxMym8rBVYKwac81p2nc0-ghc8.4.1.so()(64bit)
libHSscientific-0.3.5.3-4by1ADJdqOwEBNSaNDwNzq-ghc8.4.1.so()(64bit)
libz.so.1()(64bit)

Content of RPM :
/usr/bin/wai-websockets-example
/usr/lib64/ghc-8.4.1/wai-websockets-3.0.1.1-4D4k8D6X0F5KxTQUZ0n44
/usr/lib64/ghc-8.4.1/wai-websockets-3.0.1.1-4D4k8D6X0F5KxTQUZ0n44/libHSwai-websockets-3.0.1.1-4D4k8D6X0F5KxTQUZ0n44-ghc8.4.1.so
/usr/share/doc/packages/ghc-wai-websockets
/usr/share/doc/packages/ghc-wai-websockets/LICENSE