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> /tmp/stackage-build2453$ stack unpack currency-0.2.0.0@sha256:7cb443409ad619abd9d8688db553f60c738c76b41222df5fc99b3c642d42c544
Unpacked currency-0.2.0.0 to /tmp/stackage-build2453/currency-0.2.0.0/
> /tmp/stackage-build2453/currency-0.2.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
[1 of 1] Compiling Main             ( Setup.hs, Setup.o )
Linking Setup ...
> /tmp/stackage-build2453/currency-0.2.0.0$ ./Setup configure --package-db=clear --package-db=global --package-db=/home/circleci/project/builds/nightly/pkgdb --libdir=/home/circleci/project/builds/nightly/lib --bindir=/home/circleci/project/builds/nightly/bin --datadir=/home/circleci/project/builds/nightly/share --libexecdir=/home/circleci/project/builds/nightly/libexec --sysconfdir=/home/circleci/project/builds/nightly/etc --docdir=/home/circleci/project/builds/nightly/doc/currency-0.2.0.0 --htmldir=/home/circleci/project/builds/nightly/doc/currency-0.2.0.0 --haddockdir=/home/circleci/project/builds/nightly/doc/currency-0.2.0.0
Configuring currency-0.2.0.0...
> /tmp/stackage-build2453/currency-0.2.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/currency-0.2.0.0$ ./Setup build
Preprocessing library for currency-0.2.0.0..
Building library for currency-0.2.0.0..
[1 of 2] Compiling Currency         ( Currency.hs, dist/build/Currency.o )

Currency.hs:10:1: warning: [-Wtabs]
    Tab character found here, and in 756 further locations.
    Please use spaces instead.
   |
10 |         NationalCurrency Country.CountryCode Char |
   | ^^^^^^^^
[2 of 2] Compiling Currency.Rates   ( Currency/Rates.hs, dist/build/Currency/Rates.o )

Currency/Rates.hs:8:1: warning: [-Wtabs]
    Tab character found here, and in 14 further locations.
    Please use spaces instead.
  |
8 |                 reference :: a,
  | ^^^^^^^^
> /tmp/stackage-build2453/currency-0.2.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/currency-0.2.0.0$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181120/currency-0.2.0.0-lLECQu2xSfF4KL0Gs5iN7
> /tmp/stackage-build2453/currency-0.2.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/currency-0.2.0.0$ ./Setup register
Registering library for currency-0.2.0.0..