Resolving dependencies...
Starting     appar-0.1.8
Starting     byteorder-1.0.4
Starting     splitmix-0.1.0.4
Starting     network-3.1.2.7
Building     byteorder-1.0.4
Building     appar-0.1.8
Building     splitmix-0.1.0.4
Completed    byteorder-1.0.4
Starting     th-compat-0.1.3
Completed    appar-0.1.8
Starting     validity-0.12.0.1
Building     th-compat-0.1.3
Building     validity-0.12.0.1
Completed    splitmix-0.1.0.4
Starting     random-1.2.1.1
Building     network-3.1.2.7
Building     random-1.2.1.1
Completed    th-compat-0.1.3
Starting     network-uri-2.6.4.1
Building     network-uri-2.6.4.1
Completed    validity-0.12.0.1
Completed    network-uri-2.6.4.1
Starting     validity-network-uri-0.0.0.0
Building     validity-network-uri-0.0.0.0
Failed to install validity-network-uri-0.0.0.0
Build log ( /home/builder/.cabal/logs/ghc-8.10.2/validity-network-uri-0.0.0.0-2BLQGWiXddELwsRDYoGijn.log ):
cabal: Entering directory '/tmp/cabal-tmp-11055/validity-network-uri-0.0.0.0'
Configuring validity-network-uri-0.0.0.0...
Preprocessing library for validity-network-uri-0.0.0.0..
Building library for validity-network-uri-0.0.0.0..
[1 of 2] Compiling Data.Validity.URI ( src/Data/Validity/URI.hs, dist/build/Data/Validity/URI.o, dist/build/Data/Validity/URI.dyn_o )

src/Data/Validity/URI.hs:78:15: error:
    Variable not in scope:
      decorateString :: [Char] -> (Char -> Validation) -> Validation
   |
78 |               decorateString
   |               ^^^^^^^^^^^^^^

src/Data/Validity/URI.hs:116:11: error:
    Variable not in scope:
      decorateString :: [Char] -> (Char -> Validation) -> Validation
    |
116 |           decorateString
    |           ^^^^^^^^^^^^^^

src/Data/Validity/URI.hs:200:25: error:
    Variable not in scope:
      decorateString :: [Char] -> (Char -> Validation) -> Validation
    |
200 |         (':' : rest) -> decorateString rest validatePortChar
    |                         ^^^^^^^^^^^^^^
cabal: Leaving directory '/tmp/cabal-tmp-11055/validity-network-uri-0.0.0.0'
Completed    random-1.2.1.1
Completed    network-3.1.2.7
cabal: Error: some packages failed to install:
genvalidity-network-uri-0.0.0.0-5rPuEb6bK1CwjHuKUEPLm depends on
genvalidity-network-uri-0.0.0.0 which failed to install.
validity-network-uri-0.0.0.0-2BLQGWiXddELwsRDYoGijn failed during the building
phase. The exception was:
ExitFailure 1