Resolving dependencies...
Starting     lz4-hs-0.1.5.1
Failed to install lz4-hs-0.1.5.1
Build log ( /home/builder/.cabal/logs/ghc-8.10.2/lz4-hs-0.1.5.1-zKPfyqiSHa9AAXoV4GCTV.log ):
cabal: Entering directory '/tmp/cabal-tmp-7339/lz4-hs-0.1.5.1'
Configuring lz4-hs-0.1.5.1...
cabal: The program 'c2hs' version >=0.28.6 is required but the version found
at /usr/bin/c2hs is version 0.28.3

cabal: Leaving directory '/tmp/cabal-tmp-7339/lz4-hs-0.1.5.1'
cabal: Error: some packages failed to install:
lz4-hs-0.1.5.1-zKPfyqiSHa9AAXoV4GCTV failed during the configure step. The
exception was:
ExitFailure 1