Resolving dependencies...
Downloading  CPL-0.2.0
Downloaded   CPL-0.2.0
Configuring CPL-0.2.0...
Preprocessing executable 'cpl' for CPL-0.2.0..
Building executable 'cpl' for CPL-0.2.0..
[ 1 of 18] Compiling ParserUtils      ( src/ParserUtils.hs, dist/build/cpl/cpl-tmp/ParserUtils.o )
[ 2 of 18] Compiling Paths_CPL        ( dist/build/cpl/autogen/Paths_CPL.hs, dist/build/cpl/cpl-tmp/Paths_CPL.o )
[ 3 of 18] Compiling Variance         ( src/Variance.hs, dist/build/cpl/cpl-tmp/Variance.o )
[ 4 of 18] Compiling Funct            ( src/Funct.hs, dist/build/cpl/cpl-tmp/Funct.o )
[ 5 of 18] Compiling CDT[boot]        ( src/CDT.hs-boot, dist/build/cpl/cpl-tmp/CDT.o-boot )
[ 6 of 18] Compiling FE               ( src/FE.hs, dist/build/cpl/cpl-tmp/FE.o )
[ 7 of 18] Compiling Subst            ( src/Subst.hs, dist/build/cpl/cpl-tmp/Subst.o )
[ 8 of 18] Compiling Type             ( src/Type.hs, dist/build/cpl/cpl-tmp/Type.o )
[ 9 of 18] Compiling CDT              ( src/CDT.hs, dist/build/cpl/cpl-tmp/CDT.o )

src/CDT.hs:164:22: warning: [GHC-63394] [-Wx-partial]
    In the use of tail
    (imported from Prelude, but defined in GHC.List):
    "This is a partial function, it throws an error on empty lists. Replace it with drop 1, or use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
    |
164 |           zipWith g (tail (variance (CFE (1+functArity) dom)))
    |                      ^^^^

src/CDT.hs:165:22: warning: [GHC-63394] [-Wx-partial]
    In the use of tail
    (imported from Prelude, but defined in GHC.List):
    "This is a partial function, it throws an error on empty lists. Replace it with drop 1, or use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
    |
165 |                     (tail (variance (CFE (1+functArity) cod)))
    |                      ^^^^
[10 of 18] Compiling Exp              ( src/Exp.hs, dist/build/cpl/cpl-tmp/Exp.o )
[11 of 18] Compiling Statement        ( src/Statement.hs, dist/build/cpl/cpl-tmp/Statement.o )
[12 of 18] Compiling Simp             ( src/Simp.hs, dist/build/cpl/cpl-tmp/Simp.o )
[13 of 18] Compiling ExpParser        ( src/ExpParser.hs, dist/build/cpl/cpl-tmp/ExpParser.o )
[14 of 18] Compiling CDTParser        ( src/CDTParser.hs, dist/build/cpl/cpl-tmp/CDTParser.o )
[15 of 18] Compiling AExp             ( src/AExp.hs, dist/build/cpl/cpl-tmp/AExp.o )
[16 of 18] Compiling Typing           ( src/Typing.hs, dist/build/cpl/cpl-tmp/Typing.o )
[17 of 18] Compiling CPLSystem        ( src/CPLSystem.hs, dist/build/cpl/cpl-tmp/CPLSystem.o )
[18 of 18] Compiling Main             ( src/Main.hs, dist/build/cpl/cpl-tmp/Main.o )
[19 of 19] Linking dist/build/cpl/cpl
Warning: No documentation was generated as this package does not contain a
library. Perhaps you want to use the --executables, --tests, --benchmarks or
--foreign-libraries flags.
Installing executable cpl in /var/lib/hackage-doc-builder/build-cache/tmp-install/bin
Warning: The directory
/var/lib/hackage-doc-builder/build-cache/tmp-install/bin is not in the system
search path.
Completed    CPL-0.2.0