Warning: The install command is a part of the legacy v1 style of cabal usage.

Please switch to using either the new project style and the new-install
command or the legacy v1-install alias as new-style projects will become the
default in the next version of cabal-install. Please file a bug if you cannot
replicate a working v1- use case with the new-style commands.

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Resolving dependencies...
Starting     StateVar-1.1.1.1
Starting     hashable-1.2.7.0
Building     StateVar-1.1.1.1
Building     hashable-1.2.7.0
Completed    StateVar-1.1.1.1
Starting     contravariant-1.5
Building     contravariant-1.5
Completed    hashable-1.2.7.0
Starting     unordered-containers-0.2.10.0
Building     unordered-containers-0.2.10.0
Completed    contravariant-1.5
Completed    unordered-containers-0.2.10.0
Starting     intern-0.9.2
Building     intern-0.9.2
Completed    intern-0.9.2
Starting     libffi-dynamic-0.0.0.1
Building     libffi-dynamic-0.0.0.1
Failed to install libffi-dynamic-0.0.0.1
Build log ( /home/builder/.cabal/logs/ghc-8.6.3/libffi-dynamic-0.0.0.1-2x5CNQs4ORUEEySkkKSbGC.log ):
cabal: Entering directory '/tmp/cabal-tmp-6348/libffi-dynamic-0.0.0.1'
Configuring libffi-dynamic-0.0.0.1...
Preprocessing library for libffi-dynamic-0.0.0.1..
Building library for libffi-dynamic-0.0.0.1..
[1 of 8] Compiling Foreign.LibFFI.Dynamic.Base ( dist/build/Foreign/LibFFI/Dynamic/Base.hs, dist/build/Foreign/LibFFI/Dynamic/Base.o )
[2 of 8] Compiling Foreign.LibFFI.Dynamic.Type ( dist/build/Foreign/LibFFI/Dynamic/Type.hs, dist/build/Foreign/LibFFI/Dynamic/Type.o )
[3 of 8] Compiling Foreign.LibFFI.Dynamic.FFIType ( dist/build/Foreign/LibFFI/Dynamic/FFIType.hs, dist/build/Foreign/LibFFI/Dynamic/FFIType.o )

src/Foreign/LibFFI/Dynamic/FFIType.hsc:105:9: warning: [-Woverlapping-patterns]
    Pattern match is redundant
    In a case alternative: 2 -> ...
    |
105 |         2 -> [t| Word16  |]
    |         ^^^^^^^^^^^^^^^^^^^

src/Foreign/LibFFI/Dynamic/FFIType.hsc:106:9: warning: [-Woverlapping-patterns]
    Pattern match is redundant
    In a case alternative: 4 -> ...
    |
106 |         4 -> [t| Word32  |]
    |         ^^^^^^^^^^^^^^^^^^^

src/Foreign/LibFFI/Dynamic/FFIType.hsc:107:9: warning: [-Woverlapping-patterns]
    Pattern match is redundant
    In a case alternative: 8 -> ...
    |
107 |         8 -> [t| Word64  |]
    |         ^^^^^^^^^^^^^^^^^^^

src/Foreign/LibFFI/Dynamic/FFIType.hsc:108:9: warning: [-Woverlapping-patterns]
    Pattern match is redundant
    In a case alternative: _ -> ...
    |
108 |         _ -> fail "Bool is weird"
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[4 of 8] Compiling Foreign.LibFFI.Dynamic.CIF ( dist/build/Foreign/LibFFI/Dynamic/CIF.hs, dist/build/Foreign/LibFFI/Dynamic/CIF.o )

src/Foreign/LibFFI/Dynamic/CIF.hsc:27:1: warning: [-Wunused-imports]
    The import of ‘Control.Applicative’ is redundant
      except perhaps to import instances from ‘Control.Applicative’
    To import instances alone, use: import Control.Applicative()
   |
27 | import Control.Applicative
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[5 of 8] Compiling Foreign.LibFFI.Dynamic.Closure ( src/Foreign/LibFFI/Dynamic/Closure.hs, dist/build/Foreign/LibFFI/Dynamic/Closure.o )
[6 of 8] Compiling Foreign.Dynamic  ( src/Foreign/Dynamic.hs, dist/build/Foreign/Dynamic.o )
[7 of 8] Compiling Foreign.Wrapper  ( src/Foreign/Wrapper.hs, dist/build/Foreign/Wrapper.o )
[8 of 8] Compiling Foreign.LibFFI.Dynamic ( src/Foreign/LibFFI/Dynamic.hs, dist/build/Foreign/LibFFI/Dynamic.o )

cbits/closures.c:210:10: error:
     fatal error: dlmalloc.c: No such file or directory
     #include "dlmalloc.c"
              ^~~~~~~~~~~~
    |
210 | #include "dlmalloc.c"
    |          ^
compilation terminated.
`gcc' failed in phase `C Compiler'. (Exit code: 1)
cabal: Leaving directory '/tmp/cabal-tmp-6348/libffi-dynamic-0.0.0.1'
cabal: Error: some packages failed to install:
libffi-dynamic-0.0.0.1-2x5CNQs4ORUEEySkkKSbGC failed during the building
phase. The exception was:
ExitFailure 1