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

Provides :
ghc-yaml
ghc-yaml(x86-64)
libHSyaml-0.8.28-2wLjhMOoO961oUJLxzQhMW-ghc8.4.1.so()(64bit)

Requires :

libc.so.6()(64bit)
libHStransformers-compat-0.6.0.6-HgbwBqjseSq2lVOIBzslZ-ghc8.4.1.so()(64bit)
libHSuuid-types-1.0.3-76pWajxAr0qIqmVDygYnIp-ghc8.4.1.so()(64bit)
libHSmono-traversable-1.0.8.1-AZ6nGUr3VtM2Fp8ARM8hqh-ghc8.4.1.so()(64bit)
libHSdlist-0.8.0.4-HKvnjzqMPICHGcNIet7TcN-ghc8.4.1.so()(64bit)
libHSunliftio-core-0.1.1.0-4YTby8dEJ5LLMK4AdT4sjU-ghc8.4.1.so()(64bit)
librt.so.1(GLIBC_2.2.5)(64bit)
libHSvector-algorithms-0.7.0.1-Bhdp2JpuUJ0CdrX2bsn6P6-ghc8.4.1.so()(64bit)
libHSsemigroups-0.18.4-38OPGmMfh928ND3Gy7Pzxr-ghc8.4.1.so()(64bit)
libHSattoparsec-0.13.2.2-3BkGVuOn2dQH7RBDbxwnaS-ghc8.4.1.so()(64bit)
librt.so.1()(64bit)
libHSaeson-1.2.4.0-86Z5U20hd0h69EAtW5mOUu-ghc8.4.1.so()(64bit)
libHSvector-0.12.0.1-ANruhCPvY6kWtnXdtpuVt-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)
libHSsplit-0.2.3.3-KXnkaQ60rB8KkffQAVXi1g-ghc8.4.1.so()(64bit)
libHSunix-2.7.2.2-ghc8.4.1.so()(64bit)
libHStemplate-haskell-2.13.0.0-ghc8.4.1.so()(64bit)
libm.so.6(GLIBC_2.2.5)(64bit)
libHSmtl-2.2.2-ghc8.4.1.so()(64bit)
libHStagged-0.8.5-KZCg0OnZiAB2QKmctiBGrw-ghc8.4.1.so()(64bit)
libffi.so.4()(64bit)
libHScontainers-0.5.11.0-ghc8.4.1.so()(64bit)
libHSresourcet-1.2.0-FYOp8P7FYP1Cpriv4ixUkA-ghc8.4.1.so()(64bit)
libdl.so.2()(64bit)
libHSconduit-1.3.0.1-K7b4w2ttPpsHLOdr5jdcPK-ghc8.4.1.so()(64bit)
libHSinteger-gmp-1.0.1.0-ghc8.4.1.so()(64bit)
libHSbase-4.11.0.0-ghc8.4.1.so()(64bit)
libgmp.so.10()(64bit)
libHStime-1.8.0.2-ghc8.4.1.so()(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.14)(64bit)
libHStransformers-0.5.5.0-ghc8.4.1.so()(64bit)
libHSth-abstraction-0.2.6.0-AxKETn9xnvy1NIoJGfKwUs-ghc8.4.1.so()(64bit)
libutil.so.1()(64bit)
libHSrandom-1.1-Bzf9YW9nFUS5UwW0OIfLBC-ghc8.4.1.so()(64bit)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libHSunordered-containers-0.2.9.0-GVeyBi4ueokHe3mExM0LfQ-ghc8.4.1.so()(64bit)
libpthread.so.0(GLIBC_2.2.5)(64bit)
libHSdirectory-1.3.1.5-ghc8.4.1.so()(64bit)
libpthread.so.0()(64bit)
libc.so.6(GLIBC_2.3.2)(64bit)
libHStime-locale-compat-0.1.1.3-Ap8qLd3PBN2buwmThh1gj-ghc8.4.1.so()(64bit)
librt.so.1(GLIBC_2.3.3)(64bit)
rpmlib(CompressedFileNames) <= 3.0.4-1
libc.so.6(GLIBC_2.7)(64bit)
libHSdeepseq-1.4.3.0-ghc8.4.1.so()(64bit)
libHSstm-2.4.5.0-ghc8.4.1.so()(64bit)
libHSbinary-0.8.5.1-ghc8.4.1.so()(64bit)
libHSbase-compat-0.9.3-1eIWI9OhZ8D2nYdC3nZAxC-ghc8.4.1.so()(64bit)
rpmlib(PayloadIsLzma) <= 4.4.6-1
libHSfilepath-1.4.2-ghc8.4.1.so()(64bit)
libm.so.6()(64bit)
libHShashable-1.2.7.0-KWvGBYL0Jo55TkgBYXSXSN-ghc8.4.1.so()(64bit)
libHSghc-prim-0.5.2.0-ghc8.4.1.so()(64bit)
libc.so.6(GLIBC_2.3)(64bit)
libHSbytestring-0.10.8.2-ghc8.4.1.so()(64bit)
libHSpretty-1.1.3.6-ghc8.4.1.so()(64bit)
libHSghc-boot-th-8.4.1-ghc8.4.1.so()(64bit)
libHSexceptions-0.8.3-9ZjCenuovHtEJoleaG90cU-ghc8.4.1.so()(64bit)
libHStext-1.2.3.0-ghc8.4.1.so()(64bit)
libHSscientific-0.3.5.3-4by1ADJdqOwEBNSaNDwNzq-ghc8.4.1.so()(64bit)

Content of RPM :
/usr/bin/json2yaml
/usr/bin/yaml2json
/usr/lib64/ghc-8.4.1/yaml-0.8.28-2wLjhMOoO961oUJLxzQhMW
/usr/lib64/ghc-8.4.1/yaml-0.8.28-2wLjhMOoO961oUJLxzQhMW/libHSyaml-0.8.28-2wLjhMOoO961oUJLxzQhMW-ghc8.4.1.so
/usr/share/doc/packages/ghc-yaml
/usr/share/doc/packages/ghc-yaml/LICENSE