Resolving dependencies...
Warning: The following packages are likely to be broken by the reinstalls:
text-1.2.3.2
parsec-3.1.14.0
Cabal-3.2.0.0
libiserv-8.10.2
ghci-8.10.2
ghc-8.10.2
ghc-boot-8.10.2
Continuing even though the plan contains dangerous reinstalls.
Starting     digest-0.0.1.2
Starting     colour-2.3.5
Starting     bz2-1.0.1.0
Starting     containers-0.5.11.0
Building     colour-2.3.5
Building     digest-0.0.1.2
Building     bz2-1.0.1.0
Building     containers-0.5.11.0
Completed    digest-0.0.1.2
Starting     extensible-exceptions-0.1.1.4
Building     extensible-exceptions-0.1.1.4
Completed    extensible-exceptions-0.1.1.4
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-21026/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-21026/lz4-hs-0.1.5.1'
Starting     lzlib-1.0.7.1
Building     lzlib-1.0.7.1
Completed    colour-2.3.5
Completed    bz2-1.0.1.0
Completed    lzlib-1.0.7.1
Completed    containers-0.5.11.0
cabal: Error: some packages failed to install:
lz4-hs-0.1.5.1-zKPfyqiSHa9AAXoV4GCTV failed during the configure step. The
exception was:
ExitFailure 1
sak-0.1.2.6-LBySITGHaDs65ASUxA8eEM depends on sak-0.1.2.6 which failed to
install.