@nix { "action": "setPhase", "phase": "setupCompilerEnvironmentPhase" }
setupCompilerEnvironmentPhase
Build with /nix/store/kp4hnhfkd7c6gf3fnb8z897nwnpvg5w7-ghc-8.10.4.
@nix { "action": "setPhase", "phase": "unpackPhase" }
unpacking sources
unpacking source archive /nix/store/xb82ggvigfzcw9ds2qx8lin3wngb0psq-free-5.1.7.tar.gz
source root is free-5.1.7
setting SOURCE_DATE_EPOCH to timestamp 1000000000 of file free-5.1.7/.vim.custom
@nix { "action": "setPhase", "phase": "patchPhase" }
patching sources
@nix { "action": "setPhase", "phase": "compileBuildDriverPhase" }
compileBuildDriverPhase
setupCompileFlags: -package-db=/build/setup-package.conf.d -j2 +RTS -A64M -RTS -threaded -rtsopts
[1 of 1] Compiling Main             ( Setup.lhs, /build/Main.o )
Linking Setup ...
/nix/store/hy3lz2vfv9qq2v5jz9nzlx6mmiaq79rj-binutils-2.35.1/bin/ld.gold: warning: /nix/store/cvr0kjg2q7z2wwhjblx6c73rv422k8cm-glibc-2.33-47/lib/crt1.o: unknown program property type 0xc0008002 in .note.gnu.property section
@nix { "action": "setPhase", "phase": "configurePhase" }
configuring
configureFlags: --verbose --prefix=/nix/store/03f1v4qxlfy0ha0cdghw39n7al0mgx2k-free-5.1.7 --libdir=$prefix/lib/$compiler --libsubdir=$abi/$libname --docdir=/nix/store/fr4m9p5058aipqmbd84phk157nrvlkil-free-5.1.7-doc/share/doc/free-5.1.7 --with-gcc=gcc --package-db=/build/package.conf.d --ghc-options=-j2 +RTS -A64M -RTS --disable-split-objs --enable-library-profiling --profiling-detail=exported-functions --disable-profiling --enable-shared --disable-coverage --enable-static --disable-executable-dynamic --enable-tests --disable-benchmarks --enable-library-vanilla --disable-library-for-ghci --ghc-option=-split-sections --extra-lib-dirs=/nix/store/yn7nd41grg2mzvzliphalk70hs0rfpdr-ncurses-6.2/lib --extra-lib-dirs=/nix/store/j74nwv61ghpv6zjzjvc14awggaahgm81-libffi-3.3/lib --extra-lib-dirs=/nix/store/fx58y0jdzd2xggdy0pqag2ffj72l7w33-gmp-6.2.1/lib
Using Parsec parser
Configuring free-5.1.7...
Dependency base >=4.5 && <5: using base-4.14.1.0
Dependency comonad >=5.0.8 && <6: using comonad-5.0.8
Dependency containers >=0.3 && <0.7: using containers-0.6.2.1
Dependency distributive >=0.5.2 && <1: using distributive-0.6.2.1
Dependency exceptions >=0.10.4 && <0.11: using exceptions-0.10.4
Dependency indexed-traversable >=0.1.1 && <0.2: using
indexed-traversable-0.1.1
Dependency mtl >=2.2.2 && <2.3: using mtl-2.2.2
Dependency profunctors >=5.6.1 && <6: using profunctors-5.6.2
Dependency semigroupoids >=5.3.5 && <6: using semigroupoids-5.3.5
Dependency template-haskell >=2.7.0.0 && <2.19: using
template-haskell-2.16.0.0
Dependency th-abstraction >=0.4.2.0 && <0.5: using th-abstraction-0.4.2.0
Dependency transformers >=0.4.2.0 && <0.6: using transformers-0.5.6.2
Dependency transformers-base >=0.4.5.2 && <0.5: using
transformers-base-0.4.5.2
Source component graph: component lib
Configured component graph:
    component free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi
        include base-4.14.1.0
        include comonad-5.0.8-K0w6kMM9w2iJiEl4e4ZhKg
        include containers-0.6.2.1
        include distributive-0.6.2.1-DvSiejt1glbLWlc97WlLEQ
        include exceptions-0.10.4
        include indexed-traversable-0.1.1-Dw8MIJyvCj8IZQDXOa8TBp
        include mtl-2.2.2
        include profunctors-5.6.2-Ip4UHjG8nvaDHJe1NRXuvG
        include semigroupoids-5.3.5-9r9ELSzDM8qKC88fi0kvKR
        include template-haskell-2.16.0.0
        include th-abstraction-0.4.2.0-CPMLTlyMgmr6dbHxHL95CG
        include transformers-0.5.6.2
        include transformers-base-0.4.5.2-JmmjyU9U52VCneOO2dlHeZ
Linked component graph:
    unit free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi
        include base-4.14.1.0
        include comonad-5.0.8-K0w6kMM9w2iJiEl4e4ZhKg
        include containers-0.6.2.1
        include distributive-0.6.2.1-DvSiejt1glbLWlc97WlLEQ
        include exceptions-0.10.4
        include indexed-traversable-0.1.1-Dw8MIJyvCj8IZQDXOa8TBp
        include mtl-2.2.2
        include profunctors-5.6.2-Ip4UHjG8nvaDHJe1NRXuvG
        include semigroupoids-5.3.5-9r9ELSzDM8qKC88fi0kvKR
        include template-haskell-2.16.0.0
        include th-abstraction-0.4.2.0-CPMLTlyMgmr6dbHxHL95CG
        include transformers-0.5.6.2
        include transformers-base-0.4.5.2-JmmjyU9U52VCneOO2dlHeZ
        Control.Alternative.Free=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Alternative.Free,Control.Alternative.Free.Final=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Alternative.Free.Final,Control.Applicative.Free=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Applicative.Free,Control.Applicative.Free.Fast=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Applicative.Free.Fast,Control.Applicative.Free.Final=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Applicative.Free.Final,Control.Applicative.Trans.Free=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Applicative.Trans.Free,Control.Comonad.Cofree=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Comonad.Cofree,Control.Comonad.Cofree.Class=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Comonad.Cofree.Class,Control.Comonad.Trans.Cofree=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Comonad.Trans.Cofree,Control.Comonad.Trans.Coiter=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Comonad.Trans.Coiter,Control.Monad.Free=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Monad.Free,Control.Monad.Free.Ap=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Monad.Free.Ap,Control.Monad.Free.Church=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Monad.Free.Church,Control.Monad.Free.Class=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Monad.Free.Class,Control.Monad.Free.TH=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Monad.Free.TH,Control.Monad.Trans.Free=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Monad.Trans.Free,Control.Monad.Trans.Free.Ap=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Monad.Trans.Free.Ap,Control.Monad.Trans.Free.Church=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Monad.Trans.Free.Church,Control.Monad.Trans.Iter=free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi:Control.Monad.Trans.Iter
Ready component graph:
    definite free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi
        depends base-4.14.1.0
        depends comonad-5.0.8-K0w6kMM9w2iJiEl4e4ZhKg
        depends containers-0.6.2.1
        depends distributive-0.6.2.1-DvSiejt1glbLWlc97WlLEQ
        depends exceptions-0.10.4
        depends indexed-traversable-0.1.1-Dw8MIJyvCj8IZQDXOa8TBp
        depends mtl-2.2.2
        depends profunctors-5.6.2-Ip4UHjG8nvaDHJe1NRXuvG
        depends semigroupoids-5.3.5-9r9ELSzDM8qKC88fi0kvKR
        depends template-haskell-2.16.0.0
        depends th-abstraction-0.4.2.0-CPMLTlyMgmr6dbHxHL95CG
        depends transformers-0.5.6.2
        depends transformers-base-0.4.5.2-JmmjyU9U52VCneOO2dlHeZ
Using Cabal-3.2.1.0 compiled by ghc-8.10
Using compiler: ghc-8.10.4
Using install prefix: /nix/store/03f1v4qxlfy0ha0cdghw39n7al0mgx2k-free-5.1.7
Executables installed in:
/nix/store/03f1v4qxlfy0ha0cdghw39n7al0mgx2k-free-5.1.7/bin
Libraries installed in:
/nix/store/03f1v4qxlfy0ha0cdghw39n7al0mgx2k-free-5.1.7/lib/ghc-8.10.4/x86_64-linux-ghc-8.10.4/free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi
Dynamic Libraries installed in:
/nix/store/03f1v4qxlfy0ha0cdghw39n7al0mgx2k-free-5.1.7/lib/ghc-8.10.4/x86_64-linux-ghc-8.10.4
Private executables installed in:
/nix/store/03f1v4qxlfy0ha0cdghw39n7al0mgx2k-free-5.1.7/libexec/x86_64-linux-ghc-8.10.4/free-5.1.7
Data files installed in:
/nix/store/03f1v4qxlfy0ha0cdghw39n7al0mgx2k-free-5.1.7/share/x86_64-linux-ghc-8.10.4/free-5.1.7
Documentation installed in:
/nix/store/fr4m9p5058aipqmbd84phk157nrvlkil-free-5.1.7-doc/share/doc/free-5.1.7
Configuration files installed in:
/nix/store/03f1v4qxlfy0ha0cdghw39n7al0mgx2k-free-5.1.7/etc
No alex found
Using ar found on system at:
/nix/store/hy3lz2vfv9qq2v5jz9nzlx6mmiaq79rj-binutils-2.35.1/bin/ar
No c2hs found
No cpphs found
No doctest found
Using gcc version 10.3.0 given by user at:
/nix/store/qvv5y4fx4x879rbsbs4g27mypl9wxbb9-gcc-wrapper-10.3.0/bin/gcc
Using ghc version 8.10.4 found on system at:
/nix/store/kp4hnhfkd7c6gf3fnb8z897nwnpvg5w7-ghc-8.10.4/bin/ghc
Using ghc-pkg version 8.10.4 found on system at:
/nix/store/kp4hnhfkd7c6gf3fnb8z897nwnpvg5w7-ghc-8.10.4/bin/ghc-pkg
No ghcjs found
No ghcjs-pkg found
No greencard found
Using haddock version 2.24.0 found on system at:
/nix/store/kp4hnhfkd7c6gf3fnb8z897nwnpvg5w7-ghc-8.10.4/bin/haddock
No happy found
Using haskell-suite found on system at: haskell-suite-dummy-location
Using haskell-suite-pkg found on system at: haskell-suite-pkg-dummy-location
No hmake found
Using hpc version 0.68 found on system at:
/nix/store/kp4hnhfkd7c6gf3fnb8z897nwnpvg5w7-ghc-8.10.4/bin/hpc
Using hsc2hs version 0.68.7 found on system at:
/nix/store/kp4hnhfkd7c6gf3fnb8z897nwnpvg5w7-ghc-8.10.4/bin/hsc2hs
Using hscolour version 1.24 found on system at:
/nix/store/8ifzq6lqf63gzg70pbgbgs6sbccdam6k-hscolour-1.24.4/bin/HsColour
No jhc found
Using ld found on system at:
/nix/store/rs4jynk5rpvag2b2f8m7nrzsypjss4w1-binutils-wrapper-2.35.1/bin/ld.gold
No pkg-config found
Using runghc version 8.10.4 found on system at:
/nix/store/kp4hnhfkd7c6gf3fnb8z897nwnpvg5w7-ghc-8.10.4/bin/runghc
Using strip version 2.35 found on system at:
/nix/store/hy3lz2vfv9qq2v5jz9nzlx6mmiaq79rj-binutils-2.35.1/bin/strip
Using tar found on system at:
/nix/store/87l7j4jcsl6x50nzpii751cdbsa26b0f-gnutar-1.34/bin/tar
No uhc found
@nix { "action": "setPhase", "phase": "buildPhase" }
building
Preprocessing library for free-5.1.7..
Building library for free-5.1.7..
[ 1 of 20] Compiling Control.Alternative.Free ( src/Control/Alternative/Free.hs, dist/build/Control/Alternative/Free.o, dist/build/Control/Alternative/Free.dyn_o )
[ 2 of 20] Compiling Control.Alternative.Free.Final ( src/Control/Alternative/Free/Final.hs, dist/build/Control/Alternative/Free/Final.o, dist/build/Control/Alternative/Free/Final.dyn_o )
[ 3 of 20] Compiling Control.Applicative.Free ( src/Control/Applicative/Free.hs, dist/build/Control/Applicative/Free.o, dist/build/Control/Applicative/Free.dyn_o )
[ 4 of 20] Compiling Control.Applicative.Free.Fast ( src/Control/Applicative/Free/Fast.hs, dist/build/Control/Applicative/Free/Fast.o, dist/build/Control/Applicative/Free/Fast.dyn_o )
[ 5 of 20] Compiling Control.Applicative.Free.Final ( src/Control/Applicative/Free/Final.hs, dist/build/Control/Applicative/Free/Final.o, dist/build/Control/Applicative/Free/Final.dyn_o )
[ 6 of 20] Compiling Control.Applicative.Trans.Free ( src/Control/Applicative/Trans/Free.hs, dist/build/Control/Applicative/Trans/Free.o, dist/build/Control/Applicative/Trans/Free.dyn_o )
[ 7 of 20] Compiling Control.Comonad.Cofree.Class ( src/Control/Comonad/Cofree/Class.hs, dist/build/Control/Comonad/Cofree/Class.o, dist/build/Control/Comonad/Cofree/Class.dyn_o )
[ 8 of 20] Compiling Control.Comonad.Trans.Cofree ( src/Control/Comonad/Trans/Cofree.hs, dist/build/Control/Comonad/Trans/Cofree.o, dist/build/Control/Comonad/Trans/Cofree.dyn_o )
[ 9 of 20] Compiling Control.Monad.Free.Class ( src/Control/Monad/Free/Class.hs, dist/build/Control/Monad/Free/Class.o, dist/build/Control/Monad/Free/Class.dyn_o )
[10 of 20] Compiling Control.Monad.Free.TH ( src/Control/Monad/Free/TH.hs, dist/build/Control/Monad/Free/TH.o, dist/build/Control/Monad/Free/TH.dyn_o )
[11 of 20] Compiling Data.Functor.Classes.Compat ( src/Data/Functor/Classes/Compat.hs, dist/build/Data/Functor/Classes/Compat.o, dist/build/Data/Functor/Classes/Compat.dyn_o )
[12 of 20] Compiling Control.Monad.Trans.Iter ( src/Control/Monad/Trans/Iter.hs, dist/build/Control/Monad/Trans/Iter.o, dist/build/Control/Monad/Trans/Iter.dyn_o )
[13 of 20] Compiling Control.Monad.Trans.Free.Ap ( src/Control/Monad/Trans/Free/Ap.hs, dist/build/Control/Monad/Trans/Free/Ap.o, dist/build/Control/Monad/Trans/Free/Ap.dyn_o )
[14 of 20] Compiling Control.Monad.Trans.Free ( src/Control/Monad/Trans/Free.hs, dist/build/Control/Monad/Trans/Free.o, dist/build/Control/Monad/Trans/Free.dyn_o )
[15 of 20] Compiling Control.Monad.Trans.Free.Church ( src/Control/Monad/Trans/Free/Church.hs, dist/build/Control/Monad/Trans/Free/Church.o, dist/build/Control/Monad/Trans/Free/Church.dyn_o )
[16 of 20] Compiling Control.Monad.Free.Ap ( src/Control/Monad/Free/Ap.hs, dist/build/Control/Monad/Free/Ap.o, dist/build/Control/Monad/Free/Ap.dyn_o )
[17 of 20] Compiling Control.Monad.Free ( src/Control/Monad/Free.hs, dist/build/Control/Monad/Free.o, dist/build/Control/Monad/Free.dyn_o )
[18 of 20] Compiling Control.Monad.Free.Church ( src/Control/Monad/Free/Church.hs, dist/build/Control/Monad/Free/Church.o, dist/build/Control/Monad/Free/Church.dyn_o )
[19 of 20] Compiling Control.Comonad.Trans.Coiter ( src/Control/Comonad/Trans/Coiter.hs, dist/build/Control/Comonad/Trans/Coiter.o, dist/build/Control/Comonad/Trans/Coiter.dyn_o )
[20 of 20] Compiling Control.Comonad.Cofree ( src/Control/Comonad/Cofree.hs, dist/build/Control/Comonad/Cofree.o, dist/build/Control/Comonad/Cofree.dyn_o )
[ 1 of 20] Compiling Control.Alternative.Free ( src/Control/Alternative/Free.hs, dist/build/Control/Alternative/Free.p_o )
[ 2 of 20] Compiling Control.Alternative.Free.Final ( src/Control/Alternative/Free/Final.hs, dist/build/Control/Alternative/Free/Final.p_o )
[ 3 of 20] Compiling Control.Applicative.Free ( src/Control/Applicative/Free.hs, dist/build/Control/Applicative/Free.p_o )
[ 4 of 20] Compiling Control.Applicative.Free.Fast ( src/Control/Applicative/Free/Fast.hs, dist/build/Control/Applicative/Free/Fast.p_o )
[ 5 of 20] Compiling Control.Applicative.Free.Final ( src/Control/Applicative/Free/Final.hs, dist/build/Control/Applicative/Free/Final.p_o )
[ 6 of 20] Compiling Control.Applicative.Trans.Free ( src/Control/Applicative/Trans/Free.hs, dist/build/Control/Applicative/Trans/Free.p_o )
[ 7 of 20] Compiling Control.Comonad.Cofree.Class ( src/Control/Comonad/Cofree/Class.hs, dist/build/Control/Comonad/Cofree/Class.p_o )
[ 8 of 20] Compiling Control.Comonad.Trans.Cofree ( src/Control/Comonad/Trans/Cofree.hs, dist/build/Control/Comonad/Trans/Cofree.p_o )
[ 9 of 20] Compiling Control.Monad.Free.Class ( src/Control/Monad/Free/Class.hs, dist/build/Control/Monad/Free/Class.p_o )
[10 of 20] Compiling Control.Monad.Free.TH ( src/Control/Monad/Free/TH.hs, dist/build/Control/Monad/Free/TH.p_o )
[11 of 20] Compiling Data.Functor.Classes.Compat ( src/Data/Functor/Classes/Compat.hs, dist/build/Data/Functor/Classes/Compat.p_o )
[12 of 20] Compiling Control.Monad.Trans.Iter ( src/Control/Monad/Trans/Iter.hs, dist/build/Control/Monad/Trans/Iter.p_o )
[13 of 20] Compiling Control.Monad.Trans.Free.Ap ( src/Control/Monad/Trans/Free/Ap.hs, dist/build/Control/Monad/Trans/Free/Ap.p_o )
[14 of 20] Compiling Control.Monad.Trans.Free ( src/Control/Monad/Trans/Free.hs, dist/build/Control/Monad/Trans/Free.p_o )
[15 of 20] Compiling Control.Monad.Trans.Free.Church ( src/Control/Monad/Trans/Free/Church.hs, dist/build/Control/Monad/Trans/Free/Church.p_o )
[16 of 20] Compiling Control.Monad.Free.Ap ( src/Control/Monad/Free/Ap.hs, dist/build/Control/Monad/Free/Ap.p_o )
[17 of 20] Compiling Control.Monad.Free ( src/Control/Monad/Free.hs, dist/build/Control/Monad/Free.p_o )
[18 of 20] Compiling Control.Monad.Free.Church ( src/Control/Monad/Free/Church.hs, dist/build/Control/Monad/Free/Church.p_o )
[19 of 20] Compiling Control.Comonad.Trans.Coiter ( src/Control/Comonad/Trans/Coiter.hs, dist/build/Control/Comonad/Trans/Coiter.p_o )
[20 of 20] Compiling Control.Comonad.Cofree ( src/Control/Comonad/Cofree.hs, dist/build/Control/Comonad/Cofree.p_o )
@nix { "action": "setPhase", "phase": "checkPhase" }
running tests
Package has no test suites.
@nix { "action": "setPhase", "phase": "haddockPhase" }
haddockPhase
Preprocessing library for free-5.1.7..
Running Haddock on library for free-5.1.7..
Warning: --source-* options are ignored when --hyperlinked-source is enabled.
Haddock coverage:
Warning: 'lift' is out of scope.
    If you qualify the identifier, haddock can try to link it anyway.
  66% (  4 /  6) in 'Control.Alternative.Free'
  Missing documentation for:
    Alt (src/Control/Alternative/Free.hs:54)
    AltF (src/Control/Alternative/Free.hs:47)
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    If you qualify the identifier, haddock can try to link it anyway.
 100% (  5 /  5) in 'Control.Alternative.Free.Final'
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 100% ( 11 / 11) in 'Control.Applicative.Free'
Warning: 'f' is out of scope.
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Warning: 'lift' is out of scope.
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 100% ( 14 / 14) in 'Control.Applicative.Free.Fast'
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 100% ( 10 / 10) in 'Control.Applicative.Free.Final'
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    If you qualify the identifier, haddock can try to link it anyway.
Warning: 'getSum' is out of scope.
    If you qualify the identifier, haddock can try to link it anyway.
Warning: 'Sum' is out of scope.
    If you qualify the identifier, haddock can try to link it anyway.
Warning: 'Ap' is ambiguous. It is defined
    * at src/Control/Applicative/Trans/Free.hs:68:3
    * at src/Control/Applicative/Trans/Free.hs:176:1
    You may be able to disambiguate the identifier by qualifying it or
    by specifying the type/value namespace explicitly.
    Defaulting to the one defined at src/Control/Applicative/Trans/Free.hs:176:1
 100% ( 22 / 22) in 'Control.Applicative.Trans.Free'
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Warning: 'Tree' is out of scope.
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 100% (  4 /  4) in 'Control.Monad.Free.Class'
 100% ( 10 / 10) in 'Control.Monad.Free.TH'
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Warning: 'FreeT' is out of scope.
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 100% ( 25 / 25) in 'Control.Monad.Trans.Iter'
Warning: 'Free' is ambiguous. It is defined
    * at src/Control/Monad/Trans/Free/Ap.hs:80:29
    * at src/Control/Monad/Trans/Free/Ap.hs:193:1
    You may be able to disambiguate the identifier by qualifying it or
    by specifying the type/value namespace explicitly.
    Defaulting to the one defined at src/Control/Monad/Trans/Free/Ap.hs:193:1
 100% ( 27 / 27) in 'Control.Monad.Trans.Free.Ap'
Warning: 'Free' is ambiguous. It is defined
    * at src/Control/Monad/Trans/Free.hs:90:29
    * at src/Control/Monad/Trans/Free.hs:203:1
    You may be able to disambiguate the identifier by qualifying it or
    by specifying the type/value namespace explicitly.
    Defaulting to the one defined at src/Control/Monad/Trans/Free.hs:203:1
 100% ( 28 / 28) in 'Control.Monad.Trans.Free'
Warning: 'Free' is ambiguous. It is defined
    * at src/Control/Monad/Trans/Free.hs:90:29
    * at src/Control/Monad/Trans/Free.hs:203:1
    You may be able to disambiguate the identifier by qualifying it or
    by specifying the type/value namespace explicitly.
    Defaulting to the one defined at src/Control/Monad/Trans/Free.hs:203:1
 100% ( 28 / 28) in 'Control.Monad.Trans.Free.Church'
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    If you qualify the identifier, haddock can try to link it anyway.
Warning: 'ap' is out of scope.
    If you qualify the identifier, haddock can try to link it anyway.
Warning: 'Identity' is out of scope.
    If you qualify the identifier, haddock can try to link it anyway.
 100% ( 16 / 16) in 'Control.Monad.Free.Ap'
 100% ( 16 / 16) in 'Control.Monad.Free'
 100% ( 13 / 13) in 'Control.Monad.Free.Church'
 100% ( 14 / 14) in 'Control.Comonad.Trans.Coiter'
Warning: 'cofree' is out of scope.
    If you qualify the identifier, haddock can try to link it anyway.
Warning: 'Identity' is out of scope.
    If you qualify the identifier, haddock can try to link it anyway.
Warning: 'lens' is out of scope.
    If you qualify the identifier, haddock can try to link it anyway.
  93% ( 15 / 16) in 'Control.Comonad.Cofree'
  Missing documentation for:
    hoistCofree (src/Control/Comonad/Cofree.hs:146)
Documentation created: dist/doc/html/free/index.html,
dist/doc/html/free/free.txt
@nix { "action": "setPhase", "phase": "installPhase" }
installing
Installing library in /nix/store/03f1v4qxlfy0ha0cdghw39n7al0mgx2k-free-5.1.7/lib/ghc-8.10.4/x86_64-linux-ghc-8.10.4/free-5.1.7-8z2ZDy4JIio4x2AW3FLSsi
@nix { "action": "setPhase", "phase": "fixupPhase" }
post-installation fixup
shrinking RPATHs of ELF executables and libraries in /nix/store/03f1v4qxlfy0ha0cdghw39n7al0mgx2k-free-5.1.7
shrinking /nix/store/03f1v4qxlfy0ha0cdghw39n7al0mgx2k-free-5.1.7/lib/ghc-8.10.4/x86_64-linux-ghc-8.10.4/libHSfree-5.1.7-8z2ZDy4JIio4x2AW3FLSsi-ghc8.10.4.so
strip is /nix/store/hy3lz2vfv9qq2v5jz9nzlx6mmiaq79rj-binutils-2.35.1/bin/strip
stripping (with command strip and flags -S) in /nix/store/03f1v4qxlfy0ha0cdghw39n7al0mgx2k-free-5.1.7/lib 
patching script interpreter paths in /nix/store/03f1v4qxlfy0ha0cdghw39n7al0mgx2k-free-5.1.7
checking for references to /build/ in /nix/store/03f1v4qxlfy0ha0cdghw39n7al0mgx2k-free-5.1.7...
shrinking RPATHs of ELF executables and libraries in /nix/store/fr4m9p5058aipqmbd84phk157nrvlkil-free-5.1.7-doc
strip is /nix/store/hy3lz2vfv9qq2v5jz9nzlx6mmiaq79rj-binutils-2.35.1/bin/strip
patching script interpreter paths in /nix/store/fr4m9p5058aipqmbd84phk157nrvlkil-free-5.1.7-doc
checking for references to /build/ in /nix/store/fr4m9p5058aipqmbd84phk157nrvlkil-free-5.1.7-doc...