Resolving dependencies...
Configuring old-locale-1.0.0.7...
Configuring mtl-2.2.1...
Building old-locale-1.0.0.7...
Building mtl-2.2.1...
Installed old-locale-1.0.0.7
Configuring text-1.2.2.1...
Building text-1.2.2.1...
Configuring utf8-string-1.0.1.1...
Installed mtl-2.2.1
Building utf8-string-1.0.1.1...
Configuring old-time-1.1.0.3...
Installed utf8-string-1.0.1.1
Building old-time-1.1.0.3...
Installed old-time-1.1.0.3
Installed text-1.2.2.1
Configuring convertible-1.1.1.0...
Building convertible-1.1.1.0...
Installed convertible-1.1.1.0
Configuring HDBC-2.4.0.1...
Building HDBC-2.4.0.1...
Installed HDBC-2.4.0.1
Configuring HDBC-mysql-0.6.6.2...
Failed to install HDBC-mysql-0.6.6.2
Build log ( /home/builder/.cabal/logs/HDBC-mysql-0.6.6.2.log ):
cabal: Entering directory '/tmp/cabal-tmp-25814/HDBC-mysql-0.6.6.2'
cabal: Leaving directory '/tmp/cabal-tmp-25814/HDBC-mysql-0.6.6.2'
cabal: Error: some packages failed to install:
HDBC-mysql-0.6.6.2 failed during the configure step. The exception was:
user error ('/opt/ghc/8.0.2/bin/ghc' exited with an error:

/tmp/cabal-tmp-25814/HDBC-mysql-0.6.6.2/dist/setup/setup.hs:35:7: error:
• Couldn't match type ‘[Char]’ with ‘(FilePath, [FilePath])’
Expected type: IO (Maybe (FilePath, [FilePath]))
Actual type: IO (Maybe FilePath)
• In a stmt of a 'do' block:
return (mysql_config `mplus` mysql_config5)
In the expression:
do { mysql_config <- findProgramLocation verbosity "mysql_config";
mysql_config5 <- findProgramLocation verbosity "mysql_config5";
return (mysql_config `mplus` mysql_config5) }
In the ‘programFindLocation’ field of a record
)